eslint-plugin-jsdoc

JSDoc linting rules for ESLint.

eslint-plugin-jsdoc

Installation

Install ESLint either locally or globally.

npm install --save-dev eslint

If you have installed ESLint globally, you have to install JSDoc plugin globally too. Otherwise, install it locally.

npm install --save-dev eslint-plugin-jsdoc

Configuration

Add plugins section to .eslintrc.* and specify eslint-plugin-jsdoc as a plugin.

{
    "plugins": [
        "jsdoc"
    ]
}

Finally, enable all of the rules that you would like to use.

{
    "rules": {
        "jsdoc/check-access": 1, // Recommended
        "jsdoc/check-alignment": 1, // Recommended
        "jsdoc/check-examples": 1,
        "jsdoc/check-indentation": 1,
        "jsdoc/check-line-alignment": 1,
        "jsdoc/check-param-names": 1, // Recommended
        "jsdoc/check-property-names": 1, // Recommended
        "jsdoc/check-syntax": 1,
        "jsdoc/check-tag-names": 1, // Recommended
        "jsdoc/check-types": 1, // Recommended
        "jsdoc/check-values": 1, // Recommended
        "jsdoc/empty-tags": 1, // Recommended
        "jsdoc/implements-on-classes": 1, // Recommended
        "jsdoc/match-description": 1,
        "jsdoc/newline-after-description": 1, // Recommended
        "jsdoc/no-bad-blocks": 1,
        "jsdoc/no-defaults": 1,
        "jsdoc/no-types": 1,
        "jsdoc/no-undefined-types": 1, // Recommended
        "jsdoc/require-description": 1,
        "jsdoc/require-description-complete-sentence": 1,
        "jsdoc/require-example": 1,
        "jsdoc/require-file-overview": 1,
        "jsdoc/require-hyphen-before-param-description": 1,
        "jsdoc/require-jsdoc": 1, // Recommended
        "jsdoc/require-param": 1, // Recommended
        "jsdoc/require-param-description": 1, // Recommended
        "jsdoc/require-param-name": 1, // Recommended
        "jsdoc/require-param-type": 1, // Recommended
        "jsdoc/require-property": 1, // Recommended
        "jsdoc/require-property-description": 1, // Recommended
        "jsdoc/require-property-name": 1, // Recommended
        "jsdoc/require-property-type": 1, // Recommended
        "jsdoc/require-returns": 1, // Recommended
        "jsdoc/require-returns-check": 1, // Recommended
        "jsdoc/require-returns-description": 1, // Recommended
        "jsdoc/require-returns-type": 1, // Recommended
        "jsdoc/require-yields": 1, // Recommended
        "jsdoc/valid-types": 1 // Recommended
    }
}

Or you can simply add the following to .eslintrc.*, which enables the rules commented above as "recommended":

{
  "extends": ["plugin:jsdoc/recommended"]
}

You can then selectively add to or override the recommended rules.

Options

Rules may, as per the ESLint user guide, have their own individual options. In eslint-plugin-jsdoc, a few options, such as, exemptedBy and contexts, may be used across different rules.

eslint-plugin-jsdoc options, if present, are in the form of an object supplied as the second argument in an array after the error level.

// `.eslintrc.js`
{
  rules: {
    'jsdoc/require-example': [
        // The Error level should be `error`, `warn`, or `off` (or 2, 1, or 0)
        'error',
        // The options vary by rule, but are added to an options object:
        {
          avoidExampleOnConstructors: true,
          exemptedBy: ['type']
        }
    ]
  }
}

Settings

Allow tags (`@private` or `@internal`) to disable rules for that comment block

settings.jsdoc.ignorePrivate - Disables all rules for the comment block on which a @private tag (or @access private) occurs. Defaults to false. Note: This has no effect with the rule check-access (whose purpose is to check access modifiers) or empty-tags (which checks @private itself).
settings.jsdoc.ignoreInternal - Disables all rules for the comment block on which a @internal tag occurs. Defaults to false. Note: This has no effect with the rule empty-tags (which checks @internal itself).

`maxLines` and `minLines`

One can use minLines and maxLines to indicate how many line breaks (if any) will be checked to find a jsdoc comment block before the given code block. These settings default to 0 and 1 respectively.

In conjunction with the require-jsdoc rule, these settings can be enforced so as to report problems if a jsdoc block is not found within the specified boundaries. The settings are also used in the fixer to determine how many line breaks to add when a block is missing.

Mode

settings.jsdoc.mode - Set to typescript, closure, or jsdoc (the default unless the @typescript-eslint parser is in use in which case typescript will be the default). Note that if you do not wish to use separate .eslintrc.* files for a project containing both JavaScript and TypeScript, you can also use overrides. You may also set to "permissive" to try to be as accommodating to any of the styles, but this is not recommended. Currently is used for the following:
- check-tag-names: Determine valid tags and aliases
- no-undefined-types: Only check @template for types in "closure" and "typescript" modes
- check-syntax: determines aspects that may be enforced
- valid-types: in non-Closure mode, @extends, @package and access tags (e.g., @private) with a bracketed type are reported as are missing names with @typedef
- For type/namepath-checking rules, determine which tags will be checked for types/namepaths (Closure allows types on some tags which the others do not, so these tags will additionally be checked in "closure" mode)
- For type-checking rules, impacts parsing of types (through jsdoctypeparser dependency); note that some TypeScript features are not yet supported
- Check preferred tag names
- Disallows namepath on @interface for "closure" mode in valid-types (and avoids checking in other rules)

Alias Preference

Use settings.jsdoc.tagNamePreference to configure a preferred alias name for a JSDoc tag. The format of the configuration is: <primary tag name>: <preferred alias name>, e.g.

{
    "rules": {},
    "settings": {
        "jsdoc": {
            "tagNamePreference": {
                "param": "arg",
                "returns": "return"
            }
        }
    }
}

Note: ESLint does not allow settings to have keys which conflict with Object.prototype e.g. 'constructor'. To work around this, you can use the key 'tag constructor'.

One may also use an object with a message and replacement.

The following will report the message @extends is to be used over @augments as it is more evocative of classes than @augments upon encountering @augments.

{
    "rules": {},
    "settings": {
        "jsdoc": {
            "tagNamePreference": {
                "augments": {
                  "message": "@extends is to be used over @augments as it is more evocative of classes than @augments",
                  "replacement": "extends"
                }
            }
        }
    }
}

If one wishes to reject a normally valid tag, e.g., @todo, one may set the tag to false:

{
    "rules": {},
    "settings": {
        "jsdoc": {
            "tagNamePreference": {
                "todo": false
            }
        }
    }
}

A project wishing to ensure no blocks are left excluded from entering the documentation, might wish to prevent the @ignore tag in the above manner.

Or one may set the targeted tag to an object with a custom message, but without a replacement property:

{
    "rules": {},
    "settings": {
        "jsdoc": {
            "tagNamePreference": {
                "todo": {
                  "message": "We expect immediate perfection, so don't leave to-dos in your code."
                }
            }
        }
    }
}

Note that the preferred tags indicated in the settings.jsdoc.tagNamePreference map will be assumed to be defined by check-tag-names.

See check-tag-names for how that fact can be used to set an alias to itself to allow both the alias and the default (since aliases are otherwise not permitted unless used in tagNamePreference).

Default Preferred Aliases

The defaults in eslint-plugin-jsdoc (for tags which offer aliases) are as follows:

@abstract (over @virtual)
@augments (over @extends)
@class (over @constructor)
@constant (over @const)
@default (over @defaultvalue)
@description (over @desc)
@external (over @host)
@file (over @fileoverview, @overview)
@fires (over @emits)
@function (over @func, @method)
@member (over @var)
@param (over @arg, @argument)
@property (over @prop)
@returns (over @return)
@throws (over @exception)
@yields (over @yield)

This setting is utilized by the the rule for tag name checking (check-tag-names) as well as in the @param and @require rules:

check-param-names
check-tag-names
require-hyphen-before-param-description
require-description
require-param
require-param-description
require-param-name
require-param-type
require-returns
require-returns-check
require-returns-description
require-returns-type

`@override`/`@augments`/`@extends`/`@implements` Without Accompanying `@param`/`@description`/`@example`/`@returns`

The following settings allows the element(s) they reference to be omitted on the JSDoc comment block of the function or that of its parent class for any of the "require" rules (i.e., require-param, require-description, require-example, or require-returns).

settings.jsdoc.overrideReplacesDocs (@override) - Defaults to true
settings.jsdoc.augmentsExtendsReplacesDocs (@augments or its alias @extends) - Defaults to false.
settings.jsdoc.implementsReplacesDocs (@implements) - Defaults to false

The format of the configuration is as follows:

{
    "rules": {},
    "settings": {
        "jsdoc": {
            "overrideReplacesDocs": true,
            "augmentsExtendsReplacesDocs": true,
            "implementsReplacesDocs": true
        }
    }
}

Settings to Configure `check-types` and `no-undefined-types`

settings.jsdoc.preferredTypes An option map to indicate preferred or forbidden types (if default types are indicated here, these will have precedence over the default recommendations for check-types). The keys of this map are the types to be replaced (or forbidden). These keys may include:
1. The "ANY" type, *
2. The pseudo-type [] which we use to denote the parent (array) types used in the syntax string[], number[], etc.
3. The pseudo-type .<> (or .) to represent the format Array.<value> or Object.<key, value>
4. The pseudo-type <> to represent the format Array<value> or Object<key, value>
5. A plain string type, e.g., MyType
6. A plain string type followed by one of the above pseudo-types (except for [] which is always assumed to be an Array), e.g., Array., or SpecialObject<>.
If a bare pseudo-type is used, it will match all parent types of that form. If a pseudo-type prefixed with a type name is used, it will only match parent types of that form and type name.

The values can be:
- false to forbid the type
- a string to indicate the type that should be preferred in its place (and which fix mode can replace); this can be one of the formats of the keys described above.
  - Note that the format will not be changed unless you use a pseudo-type in the replacement. (For example, 'Array.<>': 'MyArray' will change Array.<string> to MyArray.<string>, preserving the dot. To get rid of the dot, you must use the pseudo-type with <>, i.e., 'Array.<>': 'MyArray<>', which will change Array.<string> to MyArray<string>).
  - If you use a bare pseudo-type in the replacement (e.g., 'MyArray.<>': '<>'), the type will be converted to the format of the pseudo-type without changing the type name. For example, MyArray.<string> will become MyArray<string> but Array.<string> will not be modified.
- an object with:
  - the key message to provide a specific error message when encountering the discouraged type.
    - The message string will have the substrings with special meaning, {{tagName}} and {{tagValue}}, replaced with their corresponding value.
  - an optional key replacement with either of the following values:
    - a string type to be preferred in its place (and which fix mode can replace)
    - false (for forbidding the type)

Note that the preferred types indicated as targets in settings.jsdoc.preferredTypes map will be assumed to be defined by no-undefined-types.

See the option of check-types, unifyParentAndChildTypeChecks, for how the keys of preferredTypes may have <> or .<> (or just .) appended and its bearing on whether types are checked as parents/children only (e.g., to match Array if the type is Array vs. Array.<string>).

Note that if a value is present both as a key and as a value, neither the key nor the value will be reported. Thus in check-types, this fact can be used to allow both object and Object if one has a preferredTypes key object: 'Object' and Object: 'object'.

`structuredTags`

An object indicating tags whose types and names/namepaths (whether defining or referencing namepaths) will be checked, subject to configuration. If the tags have predefined behavior or allowEmptyNamepaths behavior, this option will override that behavior for any specified tags, though this option can also be used for tags without predefined behavior. Its keys are tag names and its values are objects with the following optional properties:

name - String set to one of the following:
- "text" - When a name is present, plain text will be allowed in the name position (non-whitespace immediately after the tag and whitespace), e.g., in @throws This is an error, "This" would normally be the name, but "text" allows non-name text here also. This is the default.
- "namepath-defining" - As with namepath-referencing, but also indicates the tag adds a namepath to definitions, e.g., to prevent no-undefined-types from reporting references to that namepath.
- "namepath-referencing" - This will cause any name position to be checked to ensure it is a valid namepath. You might use this to ensure that tags which normally allow free text, e.g., @see will instead require a namepath.
- false - This will disallow any text in the name position.
type:
- true - Allows valid types within brackets. This is the default.
- false - Explicitly disallows any brackets or bracketed type. You might use this with @throws to suggest that only free form text is being input or with @augments (for jsdoc mode) to disallow Closure-style bracketed usage along with a required namepath.
required - Array of one of the following (defaults to an empty array, meaning none are required):
- One or both of the following strings (if both are included, then both are required):
  - "name" - Indicates that a name position is required (not just that if present, it is a valid namepath). You might use this with see to insist that a value (or namepath, depending on the name value) is always present.
  - "type" - Indicates that the type position (within curly brackets) is required (not just that if present, it is a valid type). You might use this with @throws or @typedef which might otherwise normally have their types optional. See the type groups 3-5 above.
- "typeOrName" - Must have either type (e.g., @throws {aType}) or name (@throws Some text); does not require that both exist but disallows just an empty tag.

Advanced

AST and Selectors

For various rules, one can add to the environments to which the rule applies by using the contexts option.

This option works with ESLint's selectors which are esquery expressions one may use to target a specific node type or types, including subsets of the type(s) such as nodes with certain children or attributes.

These expressions are used within ESLint plugins to find those parts of your files' code which are of interest to check. However, in eslint-plugin-jsdoc, we also allow you to use these selectors to define additional contexts where you wish our own rules to be applied.

To know all of the AST definitions one may target, it will depend on the parser you are using with ESLint (e.g., espree is the default parser for ESLint, and this follows EStree AST but to support the the latest experimental features of JavaScript, one may use @babel/eslint-parser or to be able to have one's rules (including JSDoc rules) apply to TypeScript, one may use @typescript-eslint/parser, etc.

So you can look up a particular parser to see its rules, e.g., browse through the ESTree docs as used by Espree or see ESLint's overview of the structure of AST.

However, it can sometimes be even more helpful to get an idea of ASt by just providing some of your JavaScript to the wonderful AST Explorer tool and see what AST is built out of your code. You can set the tool to the specific parser which you are using.

And if you wish to introspect on the AST of code within your projects, you can use eslint-plugin-query. Though it also works as a plugin, you can use it with its own CLI, e.g., to search your files for matching esquery selectors, optionally showing it as AST JSON.

Tip: If you want to more deeply understand not just the resulting AST tree structures for any given code but also the syntax for esquery selectors so that you can, for example, find only those nodes with a child of a certain type, you can set the "Transform" feature to ESLint and test out esquery selectors in place of the selector expression (e.g., replace 'VariableDeclaration > VariableDeclarator > Identifier[name="someVar"]' as we have here) to the selector you wish so as to get messages reported in the bottom right pane which match your esquery selector).

Rules

`check-access`

Checks that @access tags use one of the following values:

"package", "private", "protected", "public"

Also reports:

Mixing of @access with @public, @private, @protected, or @package on the same doc block.
Use of multiple instances of @access (or the @public, etc. style tags) on the same doc block.


Context	everywhere
Tags	`@access`
Recommended	false
Settings
Options

The following patterns are considered problems:

/**
 * @access foo
 */
function quux (foo) {

}
// Message: Missing valid JSDoc @access level.

/**
 * @access foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"ignorePrivate":true}}
// Message: Missing valid JSDoc @access level.

/**
 * @accessLevel foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"access":"accessLevel"}}}
// Message: Missing valid JSDoc @accessLevel level.

/**
 * @access
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"access":false}}}
// Message: Unexpected tag `@access`

class MyClass {
  /**
   * @access
   */
  myClassField = 1
}
// Message: Missing valid JSDoc @access level.

/**
 * @access public
 * @public
 */
function quux (foo) {

}
// Message: The @access tag may not be used with specific access-control tags (@package, @private, @protected, or @public).

/**
 * @access public
 * @access private
 */
function quux (foo) {

}
// Message: At most one access-control tag may be present on a jsdoc block.

/**
 * @access public
 * @access private
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"ignorePrivate":true}}
// Message: At most one access-control tag may be present on a jsdoc block.

/**
 * @public
 * @private
 */
function quux (foo) {

}
// Message: At most one access-control tag may be present on a jsdoc block.

/**
 * @public
 * @private
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"ignorePrivate":true}}
// Message: At most one access-control tag may be present on a jsdoc block.

/**
 * @public
 * @public
 */
function quux (foo) {

}
// Message: At most one access-control tag may be present on a jsdoc block.

The following patterns are not considered problems:

/**
 *
 */
function quux (foo) {

}

/**
 * @access public
 */
function quux (foo) {

}

/**
 * @accessLevel package
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"access":"accessLevel"}}}

class MyClass {
  /**
   * @access private
   */
  myClassField = 1
}

/**
 * @public
 */
function quux (foo) {

}

/**
 * @private
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"ignorePrivate":true}}

`check-alignment`

Reports invalid alignment of JSDoc block asterisks.


Context	everywhere
Tags	N/A
Recommended	true

The following patterns are considered problems:

/**
  * @param {Number} foo
 */
function quux (foo) {
  // with spaces
}
// Message: Expected JSDoc block to be aligned.

/**
  * @param {Number} foo
 */
function quux (foo) {
	// with tabs
}
// Message: Expected JSDoc block to be aligned.

/**
  * @param {Number} foo
 */
function quux (foo) {
  // with spaces
}
// Message: Expected JSDoc block to be aligned.

/**
* @param {Number} foo
*/
function quux (foo) {
  // with spaces
}
// Message: Expected JSDoc block to be aligned.

/**
 * @param {Number} foo
  */
function quux (foo) {

}
// Message: Expected JSDoc block to be aligned.

 /**
 * @param {Number} foo
 */
function quux (foo) {

}
// Message: Expected JSDoc block to be aligned.

 /**
  * @param {Number} foo
 */
function quux (foo) {

}
// Message: Expected JSDoc block to be aligned.

/**
  * @param {Number} foo
  */
 function quux (foo) {

 }
// Message: Expected JSDoc block to be aligned.

/**
   * A jsdoc not attached to any node.
 */
// Message: Expected JSDoc block to be aligned.

class Foo {
  /**
   *  Some method
    * @param a
   */
  quux(a) {}
}
// Message: Expected JSDoc block to be aligned.

The following patterns are not considered problems:

/**
 * Desc
 *
 * @param {Number} foo
 */
function quux (foo) {

}

/**
 * Desc
 *
 * @param {{
  foo: Bar,
  bar: Baz
 * }} foo
 *
 */
function quux (foo) {

}

/*  <- JSDoc must start with 2 stars.
  *    So this is unchecked.
 */
function quux (foo) {}

/**
  * @param {Number} foo
  * @private
 */
function quux (foo) {
  // with spaces
}
// Settings: {"jsdoc":{"ignorePrivate":true}}

/**
  * @param {Number} foo
  * @access private
 */
function quux (foo) {
  // with spaces
}
// Settings: {"jsdoc":{"ignorePrivate":true}}

`check-examples`

Ensures that (JavaScript) examples within JSDoc adhere to ESLint rules. Also has options to lint the default values of optional @param/@arg/@argument and @property/@prop tags or the values of @default/@defaultvalue tags.

Options

The options below all default to no-op/false except as noted.

`captionRequired`

JSDoc specs use of an optional <caption> element at the beginning of @example.

The option captionRequired insists on a <caption> being present at the beginning of any @example.

Used only for @example.

`exampleCodeRegex` and `rejectExampleCodeRegex`

JSDoc does not specify a formal means for delimiting code blocks within @example (it uses generic syntax highlighting techniques for its own syntax highlighting). The following options determine whether a given @example tag will have the check-examples checks applied to it:

exampleCodeRegex - Regex which whitelists lintable examples. If a parenthetical group is used, the first one will be used, so you may wish to use (?:...) groups where you do not wish the first such group treated as one to include. If no parenthetical group exists or matches, the whole matching expression will be used. An example might be "^```(?:js|javascript)([\\s\\S]*)```\s*$" to only match explicitly fenced JavaScript blocks. Defaults to only using the u flag, so to add your own flags, encapsulate your expression as a string, but like a literal, e.g., /```js.*```/gi. Note that specifying a global regular expression (i.e., with g) will allow independent linting of matched blocks within a single @example.
rejectExampleCodeRegex - Regex blacklist which rejects non-lintable examples (has priority over exampleCodeRegex). An example might be "^`" to avoid linting fenced blocks which may indicate a non-JavaScript language. See exampleCodeRegex on how to add flags if the default u is not sufficient.

If neither is in use, all examples will be matched. Note also that even if captionRequired is not set, any initial <caption> will be stripped out before doing the regex matching.

`paddedIndent`

This integer property allows one to add a fixed amount of whitespace at the beginning of the second or later lines of the example to be stripped so as to avoid linting issues with the decorative whitespace. For example, if set to a value of 4, the initial whitespace below will not trigger indent rule errors as the extra 4 spaces on each subsequent line will be stripped out before evaluation.

/**
 * @example
 *     anArray.filter((a) => {
 *       return a.b;
 *     });
 */

Only applied to @example linting.

`reportUnusedDisableDirectives`

If not set to false, reportUnusedDisableDirectives will report disabled directives which are not used (and thus not needed). Defaults to true. Corresponds to ESLint's --report-unused-disable-directives.

Inline ESLint config within @example JavaScript is allowed (or within @default, etc.), though the disabling of ESLint directives which are not needed by the resolved rules will be reported as with the ESLint --report-unused-disable-directives command.

Options for Determining ESLint Rule Applicability (`allowInlineConfig`, `noDefaultExampleRules`, `matchingFileName`, `configFile`, `checkEslintrc`, and `baseConfig`)

The following options determine which individual ESLint rules will be applied to the JavaScript found within the @example tags (as determined to be applicable by the above regex options) or for the other tags checked by checkDefaults, checkParams, or checkProperties options. They are ordered by decreasing precedence:

allowInlineConfig - If not set to false, will allow inline config within the @example to override other config. Defaults to true.
noDefaultExampleRules - Setting to true will disable the default rules which are expected to be troublesome for most documentation use. See the section below for the specific default rules.
configFile - A config file. Corresponds to ESLint's -c.
matchingFileName - Option for a file name (even non-existent) to trigger specific rules defined in one's config; usable with ESLint .eslintrc.* overrides -> files globs, to apply a desired subset of rules with @example (besides allowing for rules specific to examples, this option can be useful for enabling reuse of the same rules within @example as with JavaScript Markdown lintable by other plugins, e.g., if one sets matchingFileName to dummy.md so that @example rules will follow one's Markdown rules). For @example only.
matchingFileNameDefaults - As with matchingFileName but for use with checkDefaults and defaulting to .jsdoc-defaults as extension.
matchingFileNameParams - As with matchingFileName but for use with checkParams and defaulting to .jsdoc-params as extension.
matchingFileNameProperties As with matchingFileName but for use with checkProperties and defaulting to .jsdoc-properties as extension.
checkEslintrc - Defaults to true in adding rules based on an .eslintrc.* file. Setting to false corresponds to ESLint's --no-eslintrc. If matchingFileName is set, this will automatically be true and will use the config corresponding to that file. If matchingFileName is not set and this value is set to false, the .eslintrc.* configs will not be checked. If matchingFileName is not set, and this is unset or set to true, the .eslintrc.* configs will be checked as though the file name were the same as the file containing the example, with any file extension changed to ".md" (and if there is no file extension, "dummy.md" will be used). This allows convenient sharing of similar rules with often also context-free Markdown as well as use of overrides as described under matchingFileName. Note that this option (whether set by matchingFileName or set manually to true) may come at somewhat of a performance penalty as the file's existence is checked by eslint.
baseConfig - Set to an object of rules with the same schema as .eslintrc.* for defaults.

Rules Disabled by Default Unless `noDefaultExampleRules` is Set to `true`

eol-last - Insisting that a newline "always" be at the end is less likely to be desired in sample code as with the code file convention.
no-console - This rule is unlikely to have inadvertent temporary debugging within examples.
no-multiple-empty-lines - This rule may be problematic for projects which use an initial newline just to start an example. Also, projects may wish to use extra lines within examples just for easier illustration purposes.
no-undef - Many variables in examples will be undefined.
no-unused-vars - It is common to define variables for clarity without always using them within examples.
padded-blocks - It can generally look nicer to pad a little even if one's code follows more stringency as far as block padding.
jsdoc/require-file-overview - Shouldn't check example for jsdoc blocks.
jsdoc/require-jsdoc - Wouldn't expect jsdoc blocks within jsdoc blocks.
import/no-unresolved - One wouldn't generally expect example paths to resolve relative to the current JavaScript file as one would with real code.
import/unambiguous - Snippets in examples are likely too short to always include full import/export info.
node/no-missing-import - See import/no-unresolved.
node/no-missing-require - See import/no-unresolved.

For checkDefaults, checkParams, and checkProperties, the following expression-oriented rules will be used by default as well:

quotes - Will insist on "double".
semi - Will insist on "never"
strict - Disabled.
no-new - Disabled.
no-unused-expressions - Disabled.

Options for checking other than `@example` (`checkDefaults`, `checkParams`, or `checkProperties`)

checkDefaults - Whether to check the values of @default/@defaultvalue tags
checkParams - Whether to check @param/@arg/@argument default values
checkProperties - Whether to check @property/@prop default values


Context	everywhere
Tags	`example`
Recommended	false
Options	See above

The following patterns are considered problems:

/**
 * @example alert('hello')
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"no-alert":2,"semi":["error","always"]}},"checkEslintrc":false}]
// Message: @example error (no-alert): Unexpected alert.

/**
 * @example alert('hello')
 */
class quux {

}
// Options: [{"baseConfig":{"rules":{"no-alert":2,"semi":["error","always"]}},"checkEslintrc":false}]
// Message: @example error (no-alert): Unexpected alert.

/**
 * @example ```js
 alert('hello');
 ```
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"semi":["error","never"]}},"checkEslintrc":false,"exampleCodeRegex":"```js([\\s\\S]*)```"}]
// Message: @example error (semi): Extra semicolon.

/**
 * @example
 *
 * ```js alert('hello'); ```
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"semi":["error","never"]}},"checkEslintrc":false,"exampleCodeRegex":"```js ([\\s\\S]*)```"}]
// Message: @example error (semi): Extra semicolon.

/**
 * @example
 * ```js alert('hello'); ```
 */
var quux = {

};
// Options: [{"baseConfig":{"rules":{"semi":["error","never"]}},"checkEslintrc":false,"exampleCodeRegex":"```js ([\\s\\S]*)```"}]
// Message: @example error (semi): Extra semicolon.

/**
 * @example ```
 * js alert('hello'); ```
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"semi":["error","never"]}},"checkEslintrc":false,"exampleCodeRegex":"```\njs ([\\s\\S]*)```"}]
// Message: @example error (semi): Extra semicolon.

/**
 * @example <b>Not JavaScript</b>
 */
function quux () {

}
/**
 * @example quux2();
 */
function quux2 () {

}
// Options: [{"baseConfig":{"rules":{"semi":["error","never"]}},"checkEslintrc":false,"rejectExampleCodeRegex":"^\\s*<.*>\\s*$"}]
// Message: @example error (semi): Extra semicolon.

/**
 * @example
 * quux(); // does something useful
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"no-undef":["error"]}},"checkEslintrc":false,"noDefaultExampleRules":true}]
// Message: @example error (no-undef): 'quux' is not defined.

/**
 * @example <caption>Valid usage</caption>
 * quux(); // does something useful
 *
 * @example
 * quux('random unwanted arg'); // results in an error
 */
function quux () {

}
// Options: [{"captionRequired":true,"checkEslintrc":false}]
// Message: Caption is expected for examples.

/**
 * @example  quux();
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"indent":["error"]}},"checkEslintrc":false,"noDefaultExampleRules":false}]
// Message: @example error (indent): Expected indentation of 0 spaces but found 1.

/**
 * @example test() // eslint-disable-line semi
 */
function quux () {}
// Options: [{"checkEslintrc":false,"noDefaultExampleRules":true,"reportUnusedDisableDirectives":true}]
// Message: @example error: Unused eslint-disable directive (no problems were reported from 'semi').

/**
 * @example
 test() // eslint-disable-line semi
 */
function quux () {}
// Options: [{"allowInlineConfig":false,"baseConfig":{"rules":{"semi":["error","always"]}},"checkEslintrc":false,"noDefaultExampleRules":true}]
// Message: @example error (semi): Missing semicolon.

/**
 * @example const i = 5;
 * quux2()
 */
function quux2 () {

}
// Options: [{"matchingFileName":"../../jsdocUtils.js"}]
// Message: @example warning (id-length): Identifier name 'i' is too short (< 2).

/**
 * @example const i = 5;
 * quux2()
 */
function quux2 () {

}
// Message: @example warning (id-length): Identifier name 'i' is too short (< 2).

/**
 * @example const i = 5;
 *   quux2()
 */
function quux2 () {

}
// Options: [{"paddedIndent":2}]
// Message: @example warning (id-length): Identifier name 'i' is too short (< 2).

/**
 * @example
 * const i = 5;
 * quux2()
 */
function quux2 () {

}
// Message: @example warning (id-length): Identifier name 'i' is too short (< 2).

/**
 * @example const idx = 5;
 * quux2()
 */
function quux2 () {

}
// Options: [{"matchingFileName":"dummy.js"}]
// Message: @example error (semi): Missing semicolon.

/**
 * @example const idx = 5;
 *
 * quux2()
 */
function quux2 () {

}
// Options: [{"matchingFileName":"dummy.js"}]
// Message: @example error (semi): Missing semicolon.

/**
 * @example const idx = 5;
 *
 * quux2()
 */
function quux2 () {

}
// Options: [{"checkEslintrc":false,"matchingFileName":"dummy.js"}]
// Message: @example error: Parsing error: The keyword 'const' is reserved

/**
 * @example // begin
 alert('hello')
 // end
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"semi":["warn","always"]}},"checkEslintrc":false,"exampleCodeRegex":"// begin[\\s\\S]*// end","noDefaultExampleRules":true}]
// Message: @example warning (semi): Missing semicolon.

/**
 * @typedef {string} Foo
 * @example <caption></caption>
 * 'foo'
 */
// Options: [{"captionRequired":true,"checkEslintrc":false}]
// Message: Caption is expected for examples.

/**
 * @example
 * const list: number[] = [1, 2, 3]
 * quux(list);
 */
function quux () {

}
// Options: [{"baseConfig":{"parser":"@typescript-eslint/parser","parserOptions":{"ecmaVersion":6},"rules":{"semi":["error","always"]}},"checkEslintrc":false}]
// Message: @example error (semi): Missing semicolon.

/**
 * @example
 * const test = something?.find((_) => {
 *   return _
 * });
 */
function quux () {

}
// Options: [{"baseConfig":{"parserOptions":{"ecmaVersion":6},"rules":{"semi":["error","always"]}}}]
// Message: @example error (semi): Missing semicolon.

/**
 * @example <caption>Say `Hello!` to the user.</caption>
 * First, import the function:
 *
 * ```js
 * import popup from './popup'
 * const aConstInSameScope = 5;
 * ```
 *
 * Then use it like this:
 *
 * ```js
 * const aConstInSameScope = 7;
 * popup('Hello!')
 * ```
 *
 * Here is the result on macOS:
 *
 * ![Screenshot](path/to/screenshot.jpg)
 */
// Options: [{"baseConfig":{"parserOptions":{"ecmaVersion":2015,"sourceType":"module"},"rules":{"semi":["error","always"]}},"checkEslintrc":false,"exampleCodeRegex":"/^```(?:js|javascript)\\n([\\s\\S]*?)```$/gm"}]
// Message: @example error (semi): Missing semicolon.

/**
 * @example // begin
 alert('hello')
 // end
 * And here is another example:
 // begin
 alert('there')
 // end
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"semi":["warn","always"]}},"checkEslintrc":false,"exampleCodeRegex":"/\\/\\/ begin[\\s\\S]*?// end/g","noDefaultExampleRules":true}]
// Message: @example warning (semi): Missing semicolon.

/**
 * @example
 *   quux();
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"indent":["error"]}},"checkEslintrc":false,"noDefaultExampleRules":false}]
// Message: @example error (indent): Expected indentation of 0 spaces but found 2.

/**
 * @default 'abc'
 */
const str = 'abc';
// Options: [{"checkDefaults":true}]
// Message: @default error (quotes): Strings must use doublequote.

/**
 * @param {myType} [name='abc']
 */
function quux () {
}
// Options: [{"checkParams":true}]
// Message: @param error (quotes): Strings must use doublequote.

/**
 * @property {myType} [name='abc']
 */
const obj = {};
// Options: [{"checkProperties":true}]
// Message: @property error (quotes): Strings must use doublequote.

/**
 * Test function.
 *
 * @example <caption>functionName (paramOne: string, paramTwo?: any,
 * paramThree?: any): boolean</caption> test()
 *
 * @param {string} paramOne Parameter description.
 * @param {any} [paramTwo] Parameter description.
 * @param {any} [paramThree] Parameter description.
 * @returns {boolean} Return description.
 */
const functionName = function (paramOne, paramTwo,
  paramThree) {
  return false;
};
// Options: [{"baseConfig":{"parserOptions":{"ecmaVersion":2015,"sourceType":"module"},"rules":{"semi":["error","always"]}},"captionRequired":true,"checkEslintrc":false}]
// Message: @example error (semi): Missing semicolon.

The following patterns are not considered problems:

/**
 * @example ```js
 alert('hello');
 ```
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"semi":["error","always"]}},"checkEslintrc":false,"exampleCodeRegex":"```js([\\s\\S]*)```"}]

/**
 * @example ```js
 alert('hello');
 ```
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"semi":["error","always"]}},"checkEslintrc":false,"exampleCodeRegex":"/```js([\\s\\S]*)```/"}]

/**
 * @example
 * // arbitrary example content
 */
function quux () {

}
// Options: [{"checkEslintrc":false}]

/**
 * @example
 * quux(); // does something useful
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"no-undef":["error"]}},"checkEslintrc":false,"noDefaultExampleRules":false}]

/**
 * @example quux();
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"indent":["error"]}},"checkEslintrc":false,"noDefaultExampleRules":false}]

/**
 * @example <caption>Valid usage</caption>
 * quux(); // does something useful
 *
 * @example <caption>Invalid usage</caption>
 * quux('random unwanted arg'); // results in an error
 */
function quux () {

}
// Options: [{"captionRequired":true,"checkEslintrc":false}]

/**
 * @example test() // eslint-disable-line semi
 */
function quux () {}
// Options: [{"checkEslintrc":false,"noDefaultExampleRules":true,"reportUnusedDisableDirectives":false}]

/**
 * @example
 test() // eslint-disable-line semi
 */
function quux () {}
// Options: [{"allowInlineConfig":true,"baseConfig":{"rules":{"semi":["error","always"]}},"checkEslintrc":false,"noDefaultExampleRules":true}]

/**
 * @example ```js
 alert('hello')
 ```
 */
var quux = {

};
// Options: [{"baseConfig":{"rules":{"semi":["error","never"]}},"checkEslintrc":false,"exampleCodeRegex":"```js([\\s\\S]*)```"}]

/**
 * @example
 * foo(function (err) {
 *     throw err;
 * });
 */
function quux () {}
// Options: [{"baseConfig":{"rules":{"indent":["error"]}},"checkEslintrc":false,"noDefaultExampleRules":false}]

/**
 * @example
 * const list: number[] = [1, 2, 3];
 * quux(list);
 */
function quux () {

}
// Options: [{"baseConfig":{"parser":"@typescript-eslint/parser","parserOptions":{"ecmaVersion":6},"rules":{"semi":["error","always"]}},"checkEslintrc":false}]

/**
 * @example const ident = 5;
 *   quux2();
 *   bar();
 */
function quux2 () {

}
// Options: [{"paddedIndent":2}]

/**
 * @example
 * function quux() {
 *     bar();
 * }
 */
function quux () {

}
// Options: [{"baseConfig":{"rules":{"indent":["error"]}},"checkEslintrc":false,"noDefaultExampleRules":false}]

// Comment
a();

export default {};

/**
 *
 */
function f () {

}

/**
 * Does quux
 * @example
 * // Do it!
 * quux();
 */
function quux () {
}
// Options: [{"baseConfig":{"plugins":["jsdoc"],"rules":{"jsdoc/require-file-overview":["error"]}},"checkEslintrc":false,"noDefaultExampleRules":false}]

/**
 * @default "abc"
 */
const str = 'abc';
// Options: [{"checkDefaults":true}]

/**
 * @default
 */
const str = 'abc';
// Options: [{"checkDefaults":true}]

/**
 * @param {myType} [name="abc"]
 */
function quux () {
}
// Options: [{"checkParams":true}]

/**
 * @param {myType} name
 */
function quux () {
}
// Options: [{"checkParams":true}]

/**
 * @property {myType} [name="abc"]
 */
const obj = {};
// Options: [{"checkProperties":true}]

/**
 * @property {myType} [name]
 */
const obj = {};
// Options: [{"checkProperties":true}]

/**
 * @default 'abc'
 */
const str = 'abc';
// Options: [{"checkDefaults":false,"matchingFileNameDefaults":"dummy.js"}]

/**
 * @param {myType} [name='abc']
 */
function quux () {
}
// Options: [{"checkParams":false,"matchingFileNameParams":"dummy.js"}]

/**
 * @property {myType} [name='abc']
 */
const obj = {};
// Options: [{"checkProperties":false,"matchingFileNameProperties":"dummy.js"}]

/**
 * Test function.
 *
 * @example <caption>functionName (paramOne: string, paramTwo?: any,
 * paramThree?: any): boolean</caption> test();
 *
 * @param {string} paramOne Parameter description.
 * @param {any} [paramTwo] Parameter description.
 * @param {any} [paramThree] Parameter description.
 * @returns {boolean} Return description.
 */
const functionName = function (paramOne, paramTwo,
  paramThree) {
  return false;
};
// Options: [{"baseConfig":{"parserOptions":{"ecmaVersion":2015,"sourceType":"module"},"rules":{"semi":["error","always"]}},"captionRequired":true,"checkEslintrc":false}]

`check-indentation`

Reports invalid padding inside JSDoc blocks.

Ignores parts enclosed in Markdown "code block"'s. For example, the following description is not reported:

/**
 * Some description:
 * ```html
 * <section>
 *   <title>test</title>
 * </section>
 * ```
 */

Options

This rule has an object option.

`excludeTags`

Array of tags (e.g., ['example', 'description']) whose content will be "hidden" from the check-indentation rule. Defaults to ['example'].

By default, the whole JSDoc block will be checked for invalid padding. That would include @example blocks too, which can get in the way of adding full, readable examples of code without ending up with multiple linting issues.

When disabled (by passing excludeTags: [] option), the following code will report a padding issue:

/**
 * @example
 * anArray.filter((a) => {
 *   return a.b;
 * });
 */


Context	everywhere
Tags	N/A
Recommended	false
Options	`excludeTags`

The following patterns are considered problems:

/**  foo */
function quux () {

}
// Message: There must be no indentation.

/**
 * foo
 *
 * @param bar
 *  baz
 */
function quux () {

}
// Message: There must be no indentation.

/**
 * Foo
 *   bar
 */
class Moo {}
// Message: There must be no indentation.

/**
 * foo
 *
 * @example
 * anArray.filter((a) => {
 *   return a.b;
 * });
 */
function quux () {

}
// Options: [{"excludeTags":[]}]
// Message: There must be no indentation.

/**
 * foo
 *
 * @example
 *   aaaa
 * @returns
 *   eeee
 */
function quux () {

}
// Message: There must be no indentation.

/**
 * foo
 * ```html
 * <section>
 *   <title>test</title>
 * </section>
 * ```
 * @returns
 *   eeee
 */
function quux () {

}
// Message: There must be no indentation.

/**
 * foo
 * ```   aaaa```
 * @returns
 *   eeee
 */
function quux () {

}
// Message: There must be no indentation.

/**
* @example <caption>
* Here is a long
*   indented summary of this
* example
* </caption>
* ```js
* function hi () {
*   alert('Hello');
* }
* ```
*/
// Options: [{"excludeTags":[]}]
// Message: There must be no indentation.

/**
* @example <caption>
* Here is a long
* summary of this
* example
* </caption>
* // Code is not wrapped into fenced code block
* function hi () {
*   alert('Hello');
* }
*/
// Options: [{"excludeTags":[]}]
// Message: There must be no indentation.

The following patterns are not considered problems:

/**
 * foo
 *
 * @param bar
 * baz
 */
function quux () {

}

/*** foo */
function quux () {

}

/**
 * foo
 *
 * @example
 * anArray.filter((a) => {
 *   return a.b;
 * });
 */
function quux () {

}

/**
 * foo
 *
 * @example
 * anArray.filter((a) => {
 *   return a.b;
 * });
 * @returns
 *   eeee
 */
function quux () {

}
// Options: [{"excludeTags":["example","returns"]}]

/**
 * foo
 * ```html
 * <section>
 *   <title>test</title>
 * </section>
 * ```
 * @returns eeee
 */
function quux () {

}

/**
 * foo
 * ```   aaaa```
 * @returns eeee
 */
function quux () {

}

/**
* @example <caption>
* Here is a long
* summary of this
* example
* </caption>
* ```js
* function hi () {
*   alert('Hello');
* }
* ```
*/
// Options: [{"excludeTags":[]}]

`check-line-alignment`

Reports invalid alignment of JSDoc block lines. This is a standard recommended to WordPress code, for example.

Options

This rule allows one optional string argument. If it is "always" then a problem is raised when the lines are not aligned. If it is "never" then a problem should be raised when there is more than one space between each line's parts. Defaults to "never".

After the string, an options object is allowed with the following properties.

`tags`

Use this to change the tags which are sought for alignment changes. Currently only works with the "never" option. Defaults to an array of ['param', 'arg', 'argument', 'property', 'prop', 'returns', 'return'].


Context	everywhere
Options	(a string matching `"always"
Tags	`param`, `property`, `returns` and others added by `tags`
Aliases	`arg`, `argument`, `prop`, `return`
Recommended	false

The following patterns are considered problems:

/**
 * Function description.
 *
 * @param {string} lorem Description.
 * @param {int} sit Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * Function description.
 *
 * @param {string} lorem - Description.
 * @param {int} sit - Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * Function description.
 *
 * @param {string} lorem Description.
 * @param {int} sit Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * Function description.
 *
 * @param  {string} lorem Description.
 *  @param {int}    sit   Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * Function description.
 *
 * @param  {string} lorem Description.
  * @param {int}    sit   Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * Function description.
 *
 * @param  {string} lorem Description.
 * @param  {int}    sit   Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * Function description.
 *
 * @param {string} lorem Description.
 * @param {int} sit Description multi words.
 */
function fn( lorem, sit ) {}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

const object = {
  /**
   * Function description.
   *
   * @param {string} lorem Description.
   * @param {int} sit Description multi words.
   */
  fn( lorem, sit ) {}
}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

class ClassName {
  /**
   * Function description.
   *
   * @param {string} lorem Description.
   * @param {int} sit Description multi words.
   */
  fn( lorem, sit ) {}
}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * Function description.
 *
 * @arg {string} lorem Description.
 * @arg {int} sit Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * @namespace
 * @property {object} defaults Description.
 * @property {int} defaults.lorem Description multi words.
 */
const config = {
    defaults: {
        lorem: 1
    }
}
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * My object.
 *
 * @typedef {Object} MyObject
 *
 * @property {string} lorem Description.
 * @property {int} sit Description multi words.
 */
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * My object.
 *
 * @typedef {Object} MyObject
 *
 * @property {{a: number, b: string, c}} lorem Description.
 * @property {Object.<string, Class>} sit Description multi words.
 * @property {Object.<string, Class>} amet Description} weird {multi} {{words}}.
 * @property {Object.<string, Class>} dolor
 */
// Options: ["always"]
// Message: Expected JSDoc block lines to be aligned.

/**
 * My function.
 *
 * @param {string} lorem  Description.
 * @param {int}    sit    Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["never"]
// Message: Expected JSDoc block lines to not be aligned.

/**
 * My function.
 *
 * @param {string} lorem Description.
 * @param   {int}    sit   Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["never"]
// Message: Expected JSDoc block lines to not be aligned.

/**
 * My function.
 *
 * @param {string} lorem Description.
 * @param   {int}    sit
 */
const fn = ( lorem, sit ) => {}
// Options: ["never"]
// Message: Expected JSDoc block lines to not be aligned.

/**
 * My function.
 *
 * @param {string} lorem Description.
 * @param   {int}    sit
 */
const fn = ( lorem, sit ) => {}
// Message: Expected JSDoc block lines to not be aligned.

/**
 * Creates OS based shortcuts for files, folders, and applications.
 *
 * @param  {object}  options  Options object for each OS.
 * @return {boolean}          True = success, false = failed to create the icon
 */
 function quux () {}
// Options: ["never"]
// Message: Expected JSDoc block lines to not be aligned.

/**
 * Creates OS based shortcuts for files, folders, and applications.
 *
 * @param {object} options Options object for each OS.
 * @return {boolean}          True = success, false = failed to create the icon
 */
 function quux () {}
// Options: ["never"]
// Message: Expected JSDoc block lines to not be aligned.

/**
 * Creates OS based shortcuts for files, folders, and applications.
 *
 * @param {object} options Options object for each OS.
 * @return  True = success, false = failed to create the icon
 */
 function quux () {}
// Options: ["never"]
// Message: Expected JSDoc block lines to not be aligned.

/**
 * Creates OS based shortcuts for files, folders, and applications.
 *
 * @param  options Options object for each OS.
 * @return True = success, false = failed to create the icon
 */
 function quux () {}
// Options: ["never"]
// Message: Expected JSDoc block lines to not be aligned.

/**
 * Creates OS based shortcuts for files, folders, and applications.
 *
 * @param {object} options Options object for each OS.
 * @param {object} other Other.
 * @return  True = success, false = failed to create the icon
 */
 function quux () {}
// Options: ["never",{"tags":["param","return"]}]
// Message: Expected JSDoc block lines to not be aligned.

/**
 * Returns the value stored in the process.env for a given
 * environment variable.
 *
 * @param  {string} withPercents    '%USERNAME%'
 * @param  {string} withoutPercents 'USERNAME'
 * @return {string}                 'bob' || '%USERNAME%'
 */
function quux () {}
// Options: ["never"]
// Message: Expected JSDoc block lines to not be aligned.

The following patterns are not considered problems:

/**
 * Function description.
 *
 * @param {string} lorem Description.
 * @param {int}    sit   Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]

/**
 * Function description.
 *
 * @param {string} lorem - Description.
 * @param {int}    sit   - Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]

/**
 * @param {string} lorem Description.
 * @param {int}    sit
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]

/**
 * @param {int}    sit
 * @param {string} lorem Description.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]

/**
 * No params.
 */
const fn = () => {}
// Options: ["always"]

const fn = ( lorem, sit ) => {}
// Options: ["always"]

/**
 * Function description.
 *
 * @param {string} lorem Description.
 * @param {int}    sit   Description multi words.
 */
function fn( lorem, sit ) {}
// Options: ["always"]

const object = {
  /**
   * Function description.
   *
   * @param {string} lorem Description.
   * @param {int}    sit   Description multi words.
   */
  fn( lorem, sit ) {},
}
// Options: ["always"]

class ClassName {
  /**
   * Function description.
   *
   * @param {string} lorem Description.
   * @param {int}    sit   Description multi words.
   */
  fn( lorem, sit ) {}
}
// Options: ["always"]

/**
 * Function description.
 *
 * @arg {string} lorem Description.
 * @arg {int}    sit   Description multi words.
 */
const fn = ( lorem, sit ) => {}
// Options: ["always"]

/**
 * @namespace
 * @property  {object} defaults       Description.
 * @property  {int}    defaults.lorem Description multi words.
 */
const config = {
    defaults: {
        lorem: 1
    }
}
// Options: ["always"]

/**
 * My object.
 *
 * @typedef  {Object} MyObject
 *
 * @property {string} lorem    Description.
 * @property {int}    sit      Description multi words.
 */
// Options: ["always"]

/**
 * My object.
 *
 * @typedef  {Object}                    MyObject
 *
 * @property {{a: number, b: string, c}} lorem    Description.
 * @property {Object.<string, Class>}    sit      Description multi words.
 * @property {Object.<string, Class>}    amet     Description} weird {multi} {{words}}.
 * @property {Object.<string, Class>}    dolor
 */
// Options: ["always"]

/** @param {number} lorem */
const fn = ( lorem ) => {}
// Options: ["always"]

/**
 * Creates OS based shortcuts for files, folders, and applications.
 *
 * @param  {object}  options Options object for each OS.
 * @return {boolean}         True = success, false = failed to create the icon
 */
 function quux () {}
// Options: ["always"]

/**
 * Not validating without option.
 *
 * @param {string} lorem Description.
 * @param {int} sit Description multi words.
 */
const fn = ( lorem, sit ) => {}

/**
 * Creates OS based shortcuts for files, folders, and applications.
 *
 * @param {object} options Options object for each OS.
 * @return {boolean} True = success, false = failed to create the icon
 */
function quux (options) {}

/**
 * Creates OS based shortcuts for files, folders, and applications.
 *
 * @param {object} options Options object for each OS.
 * @param {object} other Other.
 * @return  True = success, false = failed to create the icon
 */
 function quux () {}
// Options: ["never",{"tags":["param"]}]

`check-param-names`

Ensures that parameter names in JSDoc match those in the function declaration.

Destructuring

Note that by default the rule will not report parameters present on the docs but non-existing on the function signature when an object rest property is part of that function signature since the seemingly non-existing properties might actually be a part of the object rest property.

/**
 * @param options
 * @param options.foo
 */
function quux ({foo, ...extra}) {}

To require that extra be documented--and that any extraneous properties get reported--e.g., if there had been a @param options.bar above--you can use the checkRestProperty option which insists that the rest property be documented (and that there be no other implicit properties). Note, however, that jsdoc does not appear to currently support syntax or output to distinguish rest properties from other properties, so in looking at the docs alone without looking at the function signature, the disadvantage of enabling this option is that it may appear that there is an actual property named extra.

Options

`checkRestProperty`

See the "Destructuring" section. Defaults to false.

`checkTypesPattern`

See require-param under the option of the same name.

`enableFixer`

Set to true to auto-remove @param duplicates (based on identical names).

Note that this option will remove duplicates of the same name even if the definitions do not match in other ways (e.g., the second param will be removed even if it has a different type or description).

`allowExtraTrailingParamDocs`

If set to true, this option will allow extra @param definitions (e.g., representing future expected or virtual params) to be present without needing their presence within the function signature. Other inconsistencies between @param's and present function parameters will still be reported.

`checkDestructured`

Whether to check destructured properties. Defaults to true.

`useDefaultObjectProperties`

Set to true if you wish to avoid reporting of child property documentation where instead of destructuring, a whole plain object is supplied as default value but you wish its keys to be considered as signalling that the properties are present and can therefore be documented. Defaults to false.

`disableExtraPropertyReporting`

Whether to check for extra destructured properties. Defaults to false. Change to true if you want to be able to document properties which are not actually destructured. Keep as false if you expect properties to be documented in their own types. Note that extra properties will always be reported if another item at the same level is destructured as destructuring will prevent other access and this option is only intended to permit documenting extra properties that are available and actually used in the function.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`
Options	`allowExtraTrailingParamDocs`, `checkDestructured`, `checkRestProperty`, `checkTypesPattern`, `useDefaultObjectProperties`, `disableExtraPropertyReporting`
Tags	`param`
Aliases	`arg`, `argument`
Recommended	true
The following patterns are considered problems:

/**
 * @param Foo
 */
function quux (foo = 'FOO') {

}
// Message: Expected @param names to be "foo". Got "Foo".

/**
 * @arg Foo
 */
function quux (foo = 'FOO') {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"arg"}}}
// Message: Expected @arg names to be "foo". Got "Foo".

/**
 * @param Foo
 */
function quux (foo) {

}
// Message: Expected @param names to be "foo". Got "Foo".

/**
 * @param Foo.Bar
 */
function quux (foo) {

}
// Message: @param path declaration ("Foo.Bar") appears before any real parameter.

/**
 * @param foo
 * @param Foo.Bar
 */
function quux (foo) {

}
// Message: @param path declaration ("Foo.Bar") root node name ("Foo") does not match previous real parameter name ("foo").

/**
 * Assign the project to a list of employees.
 * @param {string} employees[].name - The name of an employee.
 * @param {string} employees[].department - The employee's department.
 */
function assign (employees) {

};
// Message: @param path declaration ("employees[].name") appears before any real parameter.

/**
 * Assign the project to a list of employees.
 * @param {string} employees[].name - The name of an employee.
 * @param {string} employees[].name - The employee's department.
 */
function assign (employees) {

};
// Options: [{"enableFixer":true}]
// Message: Duplicate @param "employees[].name"

/**
 * @param foo
 * @param foo.bar
 * @param bar
 */
function quux (bar, foo) {

}
// Message: Expected @param names to be "bar, foo". Got "foo, bar".

/**
 * @param foo
 * @param bar
 */
function quux (foo) {

}
// Message: @param "bar" does not match an existing function parameter.

/**
 * @param foo
 * @param foo
 */
function quux (foo) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @param "foo"

class bar {
    /**
     * @param foo
     * @param foo
     */
    quux (foo) {

    }
}
// Options: [{"enableFixer":true}]
// Message: Duplicate @param "foo"

/**
 * @param foo
 * @param foo
 */
function quux (foo, bar) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @param "foo"

/**
 * @param foo
 * @param foo
 */
function quux (foo, foo) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @param "foo"

/**
 * @param cfg
 * @param cfg.foo
 * @param cfg.foo
 */
function quux ({foo}) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @param "cfg.foo"

/**
 * @param cfg
 * @param cfg.foo
 * @param cfg.foo
 */
function quux ({foo}) {

}
// Message: Duplicate @param "cfg.foo"

/**
 * @param cfg
 * @param cfg.foo
 */
function quux ({foo, bar}) {

}
// Message: Missing @param "cfg.bar"

/**
 * @param cfg
 * @param cfg.foo
 * @param [cfg.foo]
 * @param baz
 */
function quux ({foo}, baz) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @param "cfg.foo"

/**
 * @param cfg
 * @param cfg.foo
 * @param [cfg.foo="with a default"]
 * @param baz
 */
function quux ({foo, bar}, baz) {

}
// Message: Missing @param "cfg.bar"

/**
 * @param cfg
 * @param cfg.foo
 * @param [cfg.foo="with a default"]
 * @param baz
 */
function quux ({foo}, baz) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @param "cfg.foo"

/**
 * @param cfg
 * @param [cfg.foo="with a default"]
 * @param baz
 */
function quux ({foo, bar}, baz) {

}
// Message: Missing @param "cfg.bar"

/**
 * @param args
 */
function quux ({a, b}) {

}
// Message: Missing @param "args.a"

/**
 * @param args
 */
function quux ({a, b} = {}) {

}
// Message: Missing @param "args.a"

export class SomeClass {
  /**
   * @param prop
   */
  constructor(private property: string) {}
}
// Message: Expected @param names to be "property". Got "prop".

export class SomeClass {
  /**
   * @param prop
   * @param prop.foo
   */
  constructor(prop: { foo: string, bar: string }) {}
}
// Message: Missing @param "prop.bar"

export class SomeClass {
  /**
   * @param prop
   * @param prop.foo
   * @param prop.bar
   */
  constructor(options: { foo: string, bar: string }) {}
}
// Message: @param "prop" does not match parameter name "options"

export class SomeClass {
  /**
   * @param options
   * @param options.foo
   * @param options.bar
   */
  constructor(options: { foo: string }) {}
}
// Message: @param "options.bar" does not exist on options

/**
 * @param foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":false}}}
// Message: Unexpected tag `@param`

/**
 * @param {Error} error Exit code
 * @param {number} [code = 1] Exit code
 */
function quux (error, cde = 1) {
};
// Message: Expected @param names to be "error, cde". Got "error, code".

/**
 * @param foo
 */
function quux ([a, b] = []) {

}
// Message: Missing @param "foo.0"

/**
 * @param options
 * @param options.foo
 */
function quux ({foo, ...extra}) {
}
// Options: [{"checkRestProperty":true}]
// Message: Missing @param "options.extra"

/**
 * @param cfg
 * @param cfg.foo
 * @param cfg.bar
 * @param cfg.extra
 */
function quux ({foo, ...extra}) {

}
// Options: [{"checkRestProperty":true}]
// Message: @param "cfg.bar" does not exist on cfg

/**
 * Converts an SVGRect into an object.
 * @param {SVGRect} bbox - a SVGRect
 */
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};
// Options: [{"checkTypesPattern":"SVGRect"}]
// Message: Missing @param "bbox.x"

/**
 * Converts an SVGRect into an object.
 * @param {object} bbox - a SVGRect
 */
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};
// Message: Missing @param "bbox.x"

module.exports = class GraphQL {
  /**
   * @param fetchOptions
   * @param cacheKey
   */
  fetch = ({ url, ...options }, cacheKey) => {
  }
};
// Options: [{"checkRestProperty":true}]
// Message: Missing @param "fetchOptions.url"

/**
 * Testing
 *
 * @param options
 * @param options.one One
 * @param options.two Two
 * @param options.four Four
 */
function testingEslint(options: {
  one: string;
  two: string;
  three: string;
}): string {
  return one + two + three;
}
// Message: Missing @param "options.three"

/**
 *
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"name":false,"required":["name"]}}}}
// Message: Cannot add "name" to `require` with the tag's `name` set to `false`

/**
 * @param root
 * @param foo
 */
function quux ({foo, bar}, baz) {

}
// Options: [{"checkDestructured":false}]
// Message: Expected @param names to be "root, baz". Got "root, foo".

/**
 * Description.
 * @param {Object} options
 * @param {FooBar} foo
 */
function quux ({ foo: { bar } }) {}
// Message: Missing @param "options.foo"

/**
 * Description.
 * @param {Object} options
 * @param options.foo
 */
function quux ({ foo: { bar } }) {}
// Message: Missing @param "options.foo.bar"

/**
 * Description.
 * @param {object} options Options.
 * @param {object} options.foo A description.
 * @param {object} options.foo.bar
 */
function foo({ foo: { bar: { baz } }}) {}
// Message: Missing @param "options.foo.bar.baz"

/**
* Returns a number.
* @param {Object} props Props.
* @param {Object} props.prop Prop.
* @param {string} props.prop.a String.
* @param {string} props.prop.b String.
* @return {number} A number.
*/
export function testFn1 ({ prop = { a: 1, b: 2 } }) {
}
// Options: [{"useDefaultObjectProperties":false}]
// Message: @param "props.prop.a" does not exist on props

/**
 * @param {object} cfg
 * @param {string} cfg.foo
 * @param {string} cfg.bar
 * @param {object} cfg.extra
 */
function quux ({foo}) {

}
// Message: @param "cfg.bar" does not exist on cfg

/**
 * @param {object} cfg
 * @param {string} cfg.foo
 * @param {string} cfg.bar
 * @param {object} cfg.extra
 */
function quux ({foo}) {

}
// Options: [{"disableExtraPropertyReporting":true}]
// Message: @param "cfg.bar" does not exist on cfg

/**
 * @param {object} root
 * @param {object} root.cfg
 * @param {object} root.cfg.a
 * @param {string} root.cfg.a.foo
 * @param {string} root.cfg.a.bar
 * @param {object} root.cfg.a.extra
 */
function quux ({cfg: {a: {foo}}}) {

}
// Message: @param "root.cfg.a.bar" does not exist on root

/**
 * @param {object} root
 * @param {object} root.cfg
 * @param {object} root.cfg.a
 * @param {string} root.cfg.a.foo
 * @param {string} root.cfg.a.bar
 * @param {object} root.cfg.a.extra
 */
function quux ({cfg: {a: {foo}}}) {

}
// Options: [{"disableExtraPropertyReporting":true}]
// Message: @param "root.cfg.a.bar" does not exist on root

/**
 * @param {object} root
 * @param {object} root.cfg
 * @param {string} root.cfg.foo
 * @param {string} root.cfg.bar
 * @param {object} root.cfg.extra
 */
function quux ({cfg}) {

}
// Message: @param "root.cfg.foo" does not exist on root

The following patterns are not considered problems:

/**
 *
 */
function quux (foo) {

}

/**
 * @param foo
 */
function quux (foo) {

}

/**
 * @param foo
 * @param bar
 */
function quux (foo, bar) {

}

/**
 * @param foo
 * @param bar
 */
function quux (foo, bar, baz) {

}

/**
 * @param foo
 * @param foo.foo
 * @param bar
 */
function quux (foo, bar) {

}

/**
 * @param args
 */
function quux (...args) {

}

/**
 * @param foo
 * @param foo.a
 * @param foo.b
 */
function quux ({a, b}) {

}

/**
 * @param foo
 * @param foo.a
 * @param foo.b
 */
function quux ({"a": A, b}) {

}

/**
 * @param foo
 * @param foo."a"
 * @param foo.b
 */
function quux ({a: A, b}) {

}

/**
 * @param foo
 * @param foo."a-b"
 * @param foo.b
 */
function quux ({"a-b": A, b}) {

}

/**
 * @param foo
 * @param foo.bar
 * @param foo.baz
 * @param bar
 */
function quux (foo, bar) {

}

/**
 * Assign the project to a list of employees.
 * @param {object[]} employees - The employees who are responsible for the project.
 * @param {string} employees[].name - The name of an employee.
 * @param {string} employees[].department - The employee's department.
 */
function assign (employees) {

};

export class SomeClass {
  /**
   * @param property
   */
  constructor(private property: string) {}
}

export class SomeClass {
  /**
   * @param options
   * @param options.foo
   * @param options.bar
   */
  constructor(options: { foo: string, bar: string }) {}
}

export class SomeClass {
  /**
   * @param options
   * @param options.foo
   * @param options.bar
   */
  constructor({ foo, bar }: { foo: string, bar: string }) {}
}

export class SomeClass {
  /**
   * @param options
   * @param options.foo
   * @param options.bar
   */
  constructor({ foo, bar }: { foo: string, bar: string }) {}
}

/**
 * @param {Error} error Exit code
 * @param {number} [code = 1] Exit code
 */
function quux (error, code = 1) {
};

/**
 * @param foo
 * @param bar
 */
function quux (foo) {

}
// Options: [{"allowExtraTrailingParamDocs":true}]

/**
 * @param cfg
 * @param cfg.foo
 * @param baz
 */
function quux ({foo}, baz) {

}

/**
 * @param cfg
 * @param cfg.foo
 * @param cfg2
 */
function quux ({foo}, cfg2) {

}

/**
 * @param cfg
 * @param cfg.foo
 * @param baz
 * @param baz.cfg
 */
function quux ({foo}, {cfg}) {

}

/**
 * @param options
 * @param options.foo
 */
function quux ({foo, ...extra}) {
}

/**
 * @param foo
 * @param bar
 */
function quux (foo, bar, ...extra) {

}

/**
* Converts an SVGRect into an object.
* @param {SVGRect} bbox - a SVGRect
*/
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};

/**
* Converts an SVGRect into an object.
* @param {SVGRect} bbox - a SVGRect
*/
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};

/**
* Converts an SVGRect into an object.
* @param {object} bbox - a SVGRect
*/
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};
// Options: [{"checkTypesPattern":"SVGRect"}]

class CSS {
  /**
   * Set one or more CSS properties for the set of matched elements.
   *
   * @param {Object} propertyObject - An object of property-value pairs to set.
   */
  setCssObject(propertyObject: {[key: string]: string | number}): void {
  }
}

/**
 * Logs a string.
 *
 * @param input - String to output.
 */
export default function (input: {
  [foo: string]: { a: string; b: string };
}): void {
  input;
}

export class Thing {
  foo: any;

  /**
   * @param {} C
   */
  constructor(C: { new (): any }) {
    this.foo = new C();
  }
}

/**
 * @param foo
 * @param root
 */
function quux (foo, {bar}) {

}
// Options: [{"checkDestructured":false}]

class A {
  /**
   * Show a prompt.
   * @param hideButton true if button should be hidden, false otherwise
   * @param onHidden delegate to call when the prompt is hidden
   */
  public async showPrompt(hideButton: boolean, onHidden: {(): void}): Promise<void>
  {
  }
}

/**
 * Description.
 * @param {Object} options Options.
 * @param {FooBar} options.foo foo description.
 */
function quux ({ foo: { bar }}) {}

/**
 * Description.
 * @param {FooBar} options
 * @param {Object} options.foo
 */
function quux ({ foo: { bar } }) {}
// Options: [{"checkTypesPattern":"FooBar"}]

/**
 * Description.
 * @param {Object} options
 * @param {FooBar} options.foo
 * @param {FooBar} options.baz
 */
function quux ({ foo: { bar }, baz: { cfg } }) {}

/**
 * Item
 *
 * @param {object} props
 * @param {object} props.data - case data
 * @param {string} props.data.className - additional css class
 * @param props.val
 */
export default function Item({
  data: {
    className,
  } = {},
  val = 4
}) {
}

/**
 * @param obj
 * @param obj.data
 * @param obj.data.0
 * @param obj.data.1
 * @param obj.data.2
 * @param obj.defaulting
 * @param obj.defaulting.0
 * @param obj.defaulting.1
 */
function Item({
  data: [foo, bar, ...baz],
  defaulting: [quux, xyz] = []
}) {
}

/**
* Returns a number.
* @param {Object} props Props.
* @param {Object} props.prop Prop.
* @param {string} props.prop.a String.
* @param {string} props.prop.b String.
* @return {number} A number.
*/
export function testFn1 ({ prop = { a: 1, b: 2 } }) {
}
// Options: [{"useDefaultObjectProperties":true}]

/**
 * @param {object} root
 * @param {object} root.cfg
 * @param {string} root.cfg.foo
 * @param {string} root.cfg.bar
 * @param {object} root.cfg.extra
 */
function quux ({cfg}) {

}
// Options: [{"disableExtraPropertyReporting":true}]

`check-property-names`

Ensures that property names in JSDoc are not duplicated on the same block and that nested properties have defined roots.

Options

`enableFixer`

Set to true to auto-remove @property duplicates (based on identical names).

Note that this option will remove duplicates of the same name even if the definitions do not match in other ways (e.g., the second property will be removed even if it has a different type or description).


Context	Everywhere
Options	`enableFixer`
Tags	`property`
Aliases	`prop`
Recommended	true

The following patterns are considered problems:

/**
 * @typedef (SomeType) SomeTypedef
 * @property Foo.Bar
 */
// Message: @property path declaration ("Foo.Bar") appears before any real property.

/**
 * @typedef (SomeType) SomeTypedef
 * @property foo
 * @property Foo.Bar
 */
// Message: @property path declaration ("Foo.Bar") root node name ("Foo") does not match previous real property name ("foo").

/**
 * Assign the project to a list of employees.
 * @typedef (SomeType) SomeTypedef
 * @property {string} employees[].name - The name of an employee.
 * @property {string} employees[].department - The employee's department.
 */
// Message: @property path declaration ("employees[].name") appears before any real property.

/**
 * Assign the project to a list of employees.
 * @typedef (SomeType) SomeTypedef
 * @property {string} employees[].name - The name of an employee.
 * @property {string} employees[].name - The employee's department.
 */
// Options: [{"enableFixer":true}]
// Message: Duplicate @property "employees[].name"

/**
 * @typedef (SomeType) SomeTypedef
 * @property foo
 * @property foo
 */
// Options: [{"enableFixer":true}]
// Message: Duplicate @property "foo"

/**
 * @typedef (SomeType) SomeTypedef
 * @property foo
 * @property foo
 */
// Message: Duplicate @property "foo"

/**
 * @typedef (SomeType) SomeTypedef
 * @property cfg
 * @property cfg.foo
 * @property cfg.foo
 */
function quux ({foo, bar}) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @property "cfg.foo"

class Test {
    /**
     * @typedef (SomeType) SomeTypedef
     * @property cfg
     * @property cfg.foo
     * @property cfg.foo
     */
    quux ({foo, bar}) {

    }
}
// Options: [{"enableFixer":true}]
// Message: Duplicate @property "cfg.foo"

/**
 * @typedef (SomeType) SomeTypedef
 * @property cfg
 * @property cfg.foo
 * @property [cfg.foo]
 * @property baz
 */
function quux ({foo, bar}, baz) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @property "cfg.foo"

/**
 * @typedef (SomeType) SomeTypedef
 * @property cfg
 * @property cfg.foo
 * @property [cfg.foo="with a default"]
 * @property baz
 */
function quux ({foo, bar}, baz) {

}
// Options: [{"enableFixer":true}]
// Message: Duplicate @property "cfg.foo"

/**
 * @typedef (SomeType) SomeTypedef
 * @prop foo
 * @prop foo
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":"prop"}}}
// Options: [{"enableFixer":true}]
// Message: Duplicate @prop "foo"

/**
 * @typedef (SomeType) SomeTypedef
 * @property foo
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":false}}}
// Message: Unexpected tag `@property`

The following patterns are not considered problems:

/**
 *
 */

/**
 * @typedef (SomeType) SomeTypedef
 * @property foo
 */

/**
 * @typedef (SomeType) SomeTypedef
 * @prop foo
 */

/**
 * @typedef (SomeType) SomeTypedef
 * @property foo
 * @property bar
 */

/**
 * @typedef (SomeType) SomeTypedef
 * @property foo
 * @property foo.foo
 * @property bar
 */

/**
 * Assign the project to a list of employees.
 * @typedef (SomeType) SomeTypedef
 * @property {object[]} employees - The employees who are responsible for the project.
 * @property {string} employees[].name - The name of an employee.
 * @property {string} employees[].department - The employee's department.
 */

/**
 * @typedef (SomeType) SomeTypedef
 * @property {Error} error Exit code
 * @property {number} [code = 1] Exit code
 */

/**
 * @namespace (SomeType) SomeNamespace
 * @property {Error} error Exit code
 * @property {number} [code = 1] Exit code
 */

/**
 * @class
 * @property {Error} error Exit code
 * @property {number} [code = 1] Exit code
 */
function quux (code = 1) {
  this.error = new Error('oops');
  this.code = code;
}

/**
 * @typedef (SomeType) SomeTypedef
 * @property foo
 * @property foo.bar
 * @property foo.baz
 * @property bar
 */

`check-syntax`

Reports against syntax not encouraged for the mode (e.g., Google Closure Compiler in "jsdoc" or "typescript" mode). Note that this rule will not check for types that are wholly invalid for a given mode, as that is covered by valid-types.

Currently checks against:

Use of = in "jsdoc" or "typescript" mode

Note that "jsdoc" actually allows Closure syntax, but with another option available for optional parameters (enclosing the name in brackets), the rule is enforced (except under "permissive" and "closure" modes).


Context	everywhere
Tags	N/A
Recommended	false

The following patterns are considered problems:

/**
 * @param {string=} foo
 */
function quux (foo) {

}
// Message: Syntax should not be Google Closure Compiler style.

The following patterns are not considered problems:

/**
 * @param {string=} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @param {string} [foo]
 */
function quux (foo) {

}

/**
 *
 */
function quux (foo) {

}

`check-tag-names`

Reports invalid block tag names.

Valid JSDoc 3 Block Tags are:

abstract
access
alias
async
augments
author
borrows
callback
class
classdesc
constant
constructs
copyright
default
deprecated
description
enum
event
example
exports
external
file
fires
function
generator
global
hideconstructor
ignore
implements
inheritdoc
inner
instance
interface
kind
lends
license
listens
member
memberof
memberof!
mixes
mixin
module
name
namespace
override
package
param
private
property
protected
public
readonly
requires
returns
see
since
static
summary
this
throws
todo
tutorial
type
typedef
variation
version
yields

modifies is also supported (see source) but is undocumented.

The following synonyms are also recognized if you set them in tagNamePreference as a key (or replacement):

arg
argument
const
constructor
defaultvalue
desc
emits
exception
extends
fileoverview
func
host
method
overview
prop
return
var
virtual
yield

If you wish to allow in certain cases both a primary tag name and its alias(es), you can set a normally non-preferred tag name to itself to indicate that you want to allow both the default tag (in this case @returns) and a non-default (in this case return):

"tagNamePreference": {
    "return": "return",
}

Because the tags indicated as replacements in settings.jsdoc.tagNamePreference will automatically be considered as valid, the above works.

Likewise are the tag keys of settings.jsdoc.structuredTags automatically considered as valid (as their defining an expected structure for tags implies the tags may be used).

For TypeScript (or Closure), when settings.jsdoc.mode is set to typescript or closure, one may also use the following:

template

And for Closure, when settings.jsdoc.mode is set to closure, one may use the following (in addition to the jsdoc and TypeScript tags–though replacing returns with return):

define (synonym of `const` per jsdoc source)
dict
export
externs
final
implicitCast (casing distinct from that recognized by jsdoc internally)
inheritDoc (casing distinct from that recognized by jsdoc internally)
noalias
nocollapse
nocompile
noinline
nosideeffects
polymer
polymerBehavior
preserve
record (synonym of `interface` per jsdoc source)
struct
suppress
unrestricted

...and these undocumented tags which are only in source:

closurePrimitive
customElement
expose
hidden
idGenerator
meaning
mixinClass
mixinFunction
ngInject
owner
typeSummary
wizaction

Options

`definedTags`

Use an array of definedTags strings to configure additional, allowed tags. The format is as follows:

{
  "definedTags": ["note", "record"]
}


Context	everywhere
Tags	N/A
Recommended	true
Options	`definedTags`
Settings	`tagNamePreference`, `mode`

The following patterns are considered problems:

/** @typoo {string} */
let a;
// Message: Invalid JSDoc tag name "typoo".

/** @typoo {string} */
let a;
// Settings: {"jsdoc":{"structuredTags":{"parameter":{"name":"namepath-referencing","required":["type","name"],"type":true}}}}
// Message: Invalid JSDoc tag name "typoo".

/**
 * @Param
 */
function quux () {

}
// Message: Invalid JSDoc tag name "Param".

/**
 * @foo
 */
function quux () {

}
// Message: Invalid JSDoc tag name "foo".

/**
 * @arg foo
 */
function quux (foo) {

}
// Message: Invalid JSDoc tag (preference). Replace "arg" JSDoc tag with "param".

/**
 * @param foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"arg"}}}
// Message: Invalid JSDoc tag (preference). Replace "param" JSDoc tag with "arg".

/**
 * @constructor foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"tag constructor":"cons"}}}
// Message: Invalid JSDoc tag (preference). Replace "constructor" JSDoc tag with "cons".

/**
 * @arg foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"arg":"somethingDifferent"}}}
// Message: Invalid JSDoc tag (preference). Replace "arg" JSDoc tag with "somethingDifferent".

/**
 * @param foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"parameter"}}}
// Message: Invalid JSDoc tag (preference). Replace "param" JSDoc tag with "parameter".

/**
 * @bar foo
 */
function quux (foo) {

}
// Message: Invalid JSDoc tag name "bar".

/**
 * @baz @bar foo
 */
function quux (foo) {

}
// Options: [{"definedTags":["bar"]}]
// Message: Invalid JSDoc tag name "baz".

/**
 * @bar
 * @baz
 */
function quux (foo) {

}
// Options: [{"definedTags":["bar"]}]
// Message: Invalid JSDoc tag name "baz".

/**
 * @todo
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"todo":false}}}
// Message: Blacklisted tag found (`@todo`)

/**
 * @todo
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"todo":{"message":"Please resolve to-dos or add to the tracker"}}}}
// Message: Please resolve to-dos or add to the tracker

/**
 * @todo
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"todo":{"message":"Please use x-todo instead of todo","replacement":"x-todo"}}}}
// Message: Please use x-todo instead of todo

/**
 * @todo
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"todo":{"message":"Please use x-todo instead of todo","replacement":"x-todo"}}}}
// Message: Please use x-todo instead of todo

/**
 * @todo
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"todo":55}}}
// Message: Invalid `settings.jsdoc.tagNamePreference`. Values must be falsy, a string, or an object.

/**
 * @property {object} a
 * @prop {boolean} b
 */
function quux () {

}
// Message: Invalid JSDoc tag (preference). Replace "prop" JSDoc tag with "property".

/**
 * @abc foo
 * @abcd bar
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"abc":"abcd"}}}
// Options: [{"definedTags":["abcd"]}]
// Message: Invalid JSDoc tag (preference). Replace "abc" JSDoc tag with "abcd".

/**
 * @abc
 * @abcd
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"abc":"abcd"}}}
// Message: Invalid JSDoc tag (preference). Replace "abc" JSDoc tag with "abcd".

/**
 * @returns
 */
function quux (foo) {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Invalid JSDoc tag (preference). Replace "returns" JSDoc tag with "return".

/** 
 * @modifies
 * @abstract
 * @access
 * @alias
 * @async
 * @augments
 * @author
 * @borrows
 * @callback
 * @class
 * @classdesc
 * @constant
 * @constructs
 * @copyright
 * @default
 * @deprecated
 * @description
 * @enum
 * @event
 * @example
 * @exports
 * @external
 * @file
 * @fires
 * @function
 * @generator
 * @global
 * @hideconstructor
 * @ignore
 * @implements
 * @inheritdoc
 * @inheritDoc
 * @inner
 * @instance
 * @interface
 * @kind
 * @lends
 * @license
 * @listens
 * @member
 * @memberof
 * @memberof!
 * @mixes
 * @mixin
 * @module
 * @name
 * @namespace
 * @override
 * @package
 * @param
 * @private
 * @property
 * @protected
 * @public
 * @readonly
 * @requires
 * @returns
 * @see
 * @since
 * @static
 * @summary
 * @this
 * @throws
 * @todo
 * @tutorial
 * @type
 * @typedef
 * @variation
 * @version
 * @yields
 */
function quux (foo) {}
// Settings: {"jsdoc":{"mode":"badMode"}}
// Message: Unrecognized value `badMode` for `settings.jsdoc.mode`.

/** 
 * @modifies
 * @abstract
 * @access
 * @alias
 * @async
 * @augments
 * @author
 * @borrows
 * @callback
 * @class
 * @classdesc
 * @constant
 * @constructs
 * @copyright
 * @default
 * @deprecated
 * @description
 * @enum
 * @event
 * @example
 * @exports
 * @external
 * @file
 * @fires
 * @function
 * @generator
 * @global
 * @hideconstructor
 * @ignore
 * @implements
 * @inheritdoc
 * @inheritDoc
 * @inner
 * @instance
 * @interface
 * @kind
 * @lends
 * @license
 * @listens
 * @member
 * @memberof
 * @memberof!
 * @mixes
 * @mixin
 * @module
 * @name
 * @namespace
 * @override
 * @package
 * @param
 * @private
 * @property
 * @protected
 * @public
 * @readonly
 * @requires
 * @returns
 * @see
 * @since
 * @static
 * @summary
 * @this
 * @throws
 * @todo
 * @tutorial
 * @type
 * @typedef
 * @variation
 * @version
 * @yields
 * @template
 */
function quux (foo) {}
// Message: Invalid JSDoc tag name "template".

/** 
 * @externs
 */
function quux (foo) {}
// Message: Invalid JSDoc tag name "externs".

The following patterns are not considered problems:

/**
 * @param foo
 */
function quux (foo) {

}

/**
 * @memberof! foo
 */
function quux (foo) {

}

/**
 * @arg foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"arg"}}}

/**
 * @parameter foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"structuredTags":{"parameter":{"name":"namepath-referencing","required":["type","name"],"type":true}}}}

/**
 * @bar foo
 */
function quux (foo) {

}
// Options: [{"definedTags":["bar"]}]

/**
 * @baz @bar foo
 */
function quux (foo) {

}
// Options: [{"definedTags":["baz","bar"]}]

/**
 * @baz @bar foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"baz","returns":{"message":"Prefer `bar`","replacement":"bar"},"todo":false}}}

/**
 * @returns
 */
function quux (foo) {}

/**
 * @return
 */
function quux (foo) {}
// Settings: {"jsdoc":{"mode":"closure"}}

/** 
 * @modifies
 * @abstract
 * @access
 * @alias
 * @async
 * @augments
 * @author
 * @borrows
 * @callback
 * @class
 * @classdesc
 * @constant
 * @constructs
 * @copyright
 * @default
 * @deprecated
 * @description
 * @enum
 * @event
 * @example
 * @exports
 * @external
 * @file
 * @fires
 * @function
 * @generator
 * @global
 * @hideconstructor
 * @ignore
 * @implements
 * @inheritdoc
 * @inheritDoc
 * @inner
 * @instance
 * @interface
 * @kind
 * @lends
 * @license
 * @listens
 * @member
 * @memberof
 * @memberof!
 * @mixes
 * @mixin
 * @module
 * @name
 * @namespace
 * @override
 * @package
 * @param
 * @private
 * @property
 * @protected
 * @public
 * @readonly
 * @requires
 * @returns
 * @see
 * @since
 * @static
 * @summary
 * @this
 * @throws
 * @todo
 * @tutorial
 * @type
 * @typedef
 * @variation
 * @version
 * @yields
 */
function quux (foo) {}

/** 
 * @modifies
 * @abstract
 * @access
 * @alias
 * @async
 * @augments
 * @author
 * @borrows
 * @callback
 * @class
 * @classdesc
 * @constant
 * @constructs
 * @copyright
 * @default
 * @deprecated
 * @description
 * @enum
 * @event
 * @example
 * @exports
 * @external
 * @file
 * @fires
 * @function
 * @generator
 * @global
 * @hideconstructor
 * @ignore
 * @implements
 * @inheritdoc
 * @inheritDoc
 * @inner
 * @instance
 * @interface
 * @kind
 * @lends
 * @license
 * @listens
 * @member
 * @memberof
 * @memberof!
 * @mixes
 * @mixin
 * @module
 * @name
 * @namespace
 * @override
 * @package
 * @param
 * @private
 * @property
 * @protected
 * @public
 * @readonly
 * @requires
 * @returns
 * @see
 * @since
 * @static
 * @summary
 * @this
 * @throws
 * @todo
 * @tutorial
 * @type
 * @typedef
 * @variation
 * @version
 * @yields
 * @template
 */
function quux (foo) {}
// Settings: {"jsdoc":{"mode":"typescript"}}

/** 
 * @externs
 */
function quux (foo) {}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 *
 */
function quux (foo) {

}

/**
 * @todo
 */
function quux () {

}

/**
 * @extends Foo
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"augments":{"message":"@extends is to be used over @augments.","replacement":"extends"}}}}

/**
 * (Set tag name preference to itself to get aliases to
 *   work along with main tag name.)
 * @augments Bar
 * @extends Foo
 */
function quux () {
}
// Settings: {"jsdoc":{"tagNamePreference":{"extends":"extends"}}}

/**
 * Registers the `target` class as a transient dependency; each time the dependency is resolved a new instance will be created.
 *
 * @param target - The class / constructor function to register as transient.
 *
 * @example ```ts
@transient()
class Foo { }
```
 * @param Time for a new tag
 */
export function transient<T>(target?: T): T {
  // ...
}

`check-types`

Reports invalid types.

By default, ensures that the casing of native types is the same as in this list:

undefined
null
boolean
number
bigint
string
symbol
object
Array
Function
Date
RegExp

Options

check-types allows one option:

An option object:
- with the key noDefaults to insist that only the supplied option type map is to be used, and that the default preferences (such as "string" over "String") will not be enforced. The option's default is false.
- with the key exemptTagContexts which will avoid reporting when a bad type is found on a specified tag. Set to an array of objects with a key tag set to the tag to exempt, and a types key which can either be true to indicate that any types on that tag will be allowed, or to an array of strings which will only allow specific bad types. If an array of strings is given, these must match the type exactly, e.g., if you only allow "object", it will not allow "object<string, string>". Note that this is different from the behavior of settings.jsdoc.preferredTypes. This option is useful for normally restricting generic types like object with preferredTypes, but allowing typedef to indicate that its base type is object.
- with the key unifyParentAndChildTypeChecks which will treat settings.jsdoc.preferredTypes keys such as SomeType as matching not only child types such as an unadorned SomeType but also SomeType<aChildType>, SomeType.<aChildType>, or if SomeType is Array (or []), it will match aChildType[]. If this is false or unset, the former format will only apply to types which are not parent types/unions whereas the latter formats will only apply for parent types/unions. The special types [], .<> (or .), and <> act only as parent types (and will not match a bare child type such as Array even when unified, though, as mentioned, Array will match say string[] or Array.<string> when unified). The special type * is only a child type. Note that there is no detection of parent and child type together, e.g., you cannot specify preferences for string[] specifically as distinct from say number[], but you can target both with [] or the child types number or string.

If a value is present both as a key and as a value, neither the key nor the value will be reported. Thus one can use this fact to allow both object and Object, for example. Note that in "typescript" mode, this is the default behavior.

See also the documentation on settings.jsdoc.preferredTypes which impacts the behavior of check-types.

Note that if there is an error parsing types for a tag, the function will silently ignore that tag, leaving it to the valid-types rule to report parsing errors.

Why not capital case everything?

Why are boolean, number and string exempt from starting with a capital letter? Let's take string as an example. In Javascript, everything is an object. The string Object has prototypes for string functions such as .toUpperCase().

Fortunately we don't have to write new String() everywhere in our code. Javascript will automatically wrap string primitives into string Objects when we're applying a string function to a string primitive. This way the memory footprint is a tiny little bit smaller, and the GC has less work to do.

So in a sense, there two types of strings in Javascript; {string} literals, also called primitives and {String} Objects. We use the primitives because it's easier to write and uses less memory. {String} and {string} are technically both valid, but they are not the same.

new String('lard') // String {0: "l", 1: "a", 2: "r", 3: "d", length: 4}
'lard' // "lard"
new String('lard') === 'lard' // false

To make things more confusing, there are also object literals and object Objects. But object literals are still static Objects and object Objects are instantiated Objects. So an object primitive is still an object Object.

However, Object.create(null) objects are not instanceof Object, however, so in the case of this Object we lower-case to indicate possible support for these objects.

Basically, for primitives, we want to define the type as a primitive, because that's what we use in 99.9% of cases. For everything else, we use the type rather than the primitive. Otherwise it would all just be {object}.

In short: It's not about consistency, rather about the 99.9% use case. (And some functions might not even support the objects if they are checking for identity.)

type name	`typeof`	check-types	testcase
Array	object	Array	`([]) instanceof Array` -> `true`
Function	function	Function	`(function f () {}) instanceof Function` -> `true`
Date	object	Date	`(new Date()) instanceof Date` -> `true`
RegExp	object	RegExp	`(new RegExp(/.+/)) instanceof RegExp` -> `true`
Object	object	object	`({}) instanceof Object` -> `true` but `Object.create(null) instanceof Object` -> `false`
Boolean	boolean	boolean	`(true) instanceof Boolean` -> `false`
Number	number	number	`(41) instanceof Number` -> `false`
String	string	string	`("test") instanceof String` -> `false`

If you define your own tags and don't wish their bracketed portions checked for types, you can use settings.jsdoc.structuredTags with a tag type of false.


Context	everywhere
Tags	`augments`, `class`, `constant`, `enum`, `implements`, `member`, `module`, `namespace`, `param`, `property`, `returns`, `throws`, `type`, `typedef`, `yields`
Aliases	`constructor`, `const`, `extends`, `var`, `arg`, `argument`, `prop`, `return`, `exception`, `yield`
Closure-only	`package`, `private`, `protected`, `public`, `static`
Recommended	true
Options	`noDefaults`, `exemptTagContexts`, `unifyParentAndChildTypeChecks`
Settings	`preferredTypes`, `mode`, `structuredTags`

The following patterns are considered problems:

/**
 * @param {abc} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"abc":100}}}
// Message: Invalid `settings.jsdoc.preferredTypes`. Values must be falsy, a string, or an object.

/**
 * @param {Number} foo
 */
function quux (foo) {

}
// Message: Invalid JSDoc @param "foo" type "Number"; prefer: "number".

/**
 * @arg {Number} foo
 */
function quux (foo) {

}
// Message: Invalid JSDoc @arg "foo" type "Number"; prefer: "number".

/**
 * @returns {Number} foo
 * @throws {Number} foo
 */
function quux () {

}
// Message: Invalid JSDoc @returns type "Number"; prefer: "number".

/**
 * @param {(Number | string | Boolean)=} foo
 */
function quux (foo, bar, baz) {

}
// Message: Invalid JSDoc @param "foo" type "Number"; prefer: "number".

/**
 * @param {Array.<Number | String>} foo
 */
function quux (foo, bar, baz) {

}
// Message: Invalid JSDoc @param "foo" type "Number"; prefer: "number".

/**
 * @param {(Number | String)[]} foo
 */
function quux (foo, bar, baz) {

}
// Message: Invalid JSDoc @param "foo" type "Number"; prefer: "number".

/**
 * @param {abc} foo
 */
function qux(foo) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":"Abc","string":"Str"}}}
// Message: Invalid JSDoc @param "foo" type "abc"; prefer: "Abc".

/**
 * @param {abc} foo
 */
function qux(foo) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":{"replacement":"Abc"},"string":"Str"}}}
// Message: Invalid JSDoc @param "foo" type "abc"; prefer: "Abc".

/**
 * @param {abc} foo
 */
function qux(foo) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":{"message":"Messed up JSDoc @{{tagName}}{{tagValue}} type \"abc\"; prefer: \"Abc\".","replacement":"Abc"},"string":"Str"}}}
// Message: Messed up JSDoc @param "foo" type "abc"; prefer: "Abc".

/**
 * @param {abc} foo
 * @param {cde} bar
 * @param {object} baz
 */
function qux(foo, bar, baz) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":{"message":"Messed up JSDoc @{{tagName}}{{tagValue}} type \"abc\"; prefer: \"Abc\".","replacement":"Abc"},"cde":{"message":"More messed up JSDoc @{{tagName}}{{tagValue}} type \"cde\"; prefer: \"Cde\".","replacement":"Cde"},"object":"Object"}}}
// Message: Messed up JSDoc @param "foo" type "abc"; prefer: "Abc".

/**
 * @param {abc} foo
 */
function qux(foo) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":{"message":"Messed up JSDoc @{{tagName}}{{tagValue}} type \"abc\".","replacement":false},"string":"Str"}}}
// Message: Messed up JSDoc @param "foo" type "abc".

/**
 * @param {abc} foo
 */
function qux(foo) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":{"message":"Messed up JSDoc @{{tagName}}{{tagValue}} type \"abc\"."},"string":"Str"}}}
// Message: Messed up JSDoc @param "foo" type "abc".

/**
 * @param {abc} foo
 * @param {Number} bar
 */
function qux(foo, bar) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":"Abc","string":"Str"}}}
// Options: [{"noDefaults":true}]
// Message: Invalid JSDoc @param "foo" type "abc"; prefer: "Abc".

/**
 * @param {abc} foo
 * @param {Number} bar
 */
function qux(foo, bar) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":"Abc","string":"Str"}}}
// Message: Invalid JSDoc @param "foo" type "abc"; prefer: "Abc".

/**
 * @param {abc} foo
 */
function qux(foo) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":false,"string":"Str"}}}
// Message: Invalid JSDoc @param "foo" type "abc".

/**
 * @param {abc} foo
 */
function qux(foo) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":false}}}
// Message: Invalid JSDoc @param "foo" type "abc".

/**
 * @param {*} baz
 */
function qux(baz) {
}
// Settings: {"jsdoc":{"preferredTypes":{"*":false,"abc":"Abc","string":"Str"}}}
// Message: Invalid JSDoc @param "baz" type "*".

/**
 * @param {*} baz
 */
function qux(baz) {
}
// Settings: {"jsdoc":{"preferredTypes":{"*":"aaa","abc":"Abc","string":"Str"}}}
// Message: Invalid JSDoc @param "baz" type "*"; prefer: "aaa".

/**
 * @param {abc} foo
 * @param {Number} bar
 */
function qux(foo, bar) {
}
// Settings: {"jsdoc":{"preferredTypes":{"abc":"Abc","string":"Str"}}}
// Message: Invalid JSDoc @param "foo" type "abc"; prefer: "Abc".

/**
 * @param {Array} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array":"GenericArray"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "GenericArray".

/**
 * @param {Array} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array":"GenericArray","Array.<>":"GenericArray"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "GenericArray".

/**
 * @param {Array.<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array.<>":"GenericArray"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "GenericArray".

/**
 * @param {Array<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array<>":"GenericArray"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "GenericArray".

/**
 * @param {string[]} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"[]":"SpecialTypeArray"}}}
// Message: Invalid JSDoc @param "foo" type "[]"; prefer: "SpecialTypeArray".

/**
 * @param {string[]} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"[]":"SpecialTypeArray"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "[]"; prefer: "SpecialTypeArray".

/**
 * @param {string[]} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array":"SpecialTypeArray"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "SpecialTypeArray".

/**
 * @param {object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject","object.<>":"GenericObject"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject","object<>":"GenericObject"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object.<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object.<>":"GenericObject"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object<>":"GenericObject"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object.<string, number>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object.<>":"GenericObject"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object<string, number>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object<>":"GenericObject"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object.<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":false}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "object".

/**
 * @param {object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":false}}}
// Message: Invalid JSDoc @param "foo" type "object".

/**
 * @param {object.<string, number>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 * @param {object<string, number>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "GenericObject".

/**
 *
 * @param {string[][]} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"[]":"Array."}}}
// Message: Invalid JSDoc @param "foo" type "[]"; prefer: "Array.".

/**
 *
 * @param {string[][]} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"[]":"Array.<>"}}}
// Message: Invalid JSDoc @param "foo" type "[]"; prefer: "Array.<>".

/**
 *
 * @param {string[][]} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"[]":"Array<>"}}}
// Message: Invalid JSDoc @param "foo" type "[]"; prefer: "Array<>".

/**
 *
 * @param {object.<string, object.<string, string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object.":"Object"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "Object".

/**
 *
 * @param {object.<string, object.<string, string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object.":"Object<>"}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "Object<>".

/**
 *
 * @param {object<string, object<string, string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object<>":"Object."}}}
// Message: Invalid JSDoc @param "foo" type "object"; prefer: "Object.".

/**
 *
 * @param {Array.<Array.<string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array.":"[]"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "[]".

/**
 *
 * @param {Array.<Array.<string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array.":"Array<>"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "Array<>".

/**
 *
 * @param {Array.<Array.<string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array.":"<>"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "<>".

/**
 *
 * @param {Array.<MyArray.<string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array.":"<>"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "<>".

/**
 *
 * @param {Array.<MyArray.<string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"MyArray.":"<>"}}}
// Message: Invalid JSDoc @param "foo" type "MyArray"; prefer: "<>".

/**
 *
 * @param {Array<Array<string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"<>":"Array."}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "Array.".

/**
 *
 * @param {Array<Array<string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array":"Array."}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "Array.".

/**
 *
 * @param {Array<Array<string>>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"<>":"[]"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "[]".

/** @typedef {String} foo */
// Message: Invalid JSDoc @typedef "foo" type "String"; prefer: "string".

/**
 * @this {array}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Invalid JSDoc @this type "array"; prefer: "Array".

/**
 * @export {array}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Invalid JSDoc @export type "array"; prefer: "Array".

/**
 * @typedef {object} foo
 * @property {object} bar
 */
// Settings: {"jsdoc":{"preferredTypes":{"object":"Object"}}}
// Options: [{"exemptTagContexts":[{"tag":"typedef","types":true}]}]
// Message: Invalid JSDoc @property "bar" type "object"; prefer: "Object".

/** @typedef {object} foo */
// Settings: {"jsdoc":{"preferredTypes":{"object":"Object"}}}
// Options: [{"exemptTagContexts":[{"tag":"typedef","types":["array"]}]}]
// Message: Invalid JSDoc @typedef "foo" type "object"; prefer: "Object".

/**
 * @typedef {object} foo
 * @property {object} bar
 */
// Settings: {"jsdoc":{"preferredTypes":{"object":"Object"}}}
// Options: [{"exemptTagContexts":[{"tag":"typedef","types":["object"]}]}]
// Message: Invalid JSDoc @property "bar" type "object"; prefer: "Object".

/** @typedef {object<string, string>} foo */
// Settings: {"jsdoc":{"preferredTypes":{"object<>":"Object<>"}}}
// Options: [{"exemptTagContexts":[{"tag":"typedef","types":["object"]}]}]
// Message: Invalid JSDoc @typedef "foo" type "object"; prefer: "Object<>".

/**
 * @param {Array<number | undefined>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array.<>":"[]","Array<>":"[]"}}}
// Message: Invalid JSDoc @param "foo" type "Array"; prefer: "[]".

/**
 * @typedef {object} foo
 */
function a () {}

/**
 * @typedef {Object} foo
 */
function b () {}
// Settings: {"jsdoc":{"mode":"typescript","preferredTypes":{"object":"Object"}}}
// Message: Invalid JSDoc @typedef "foo" type "object"; prefer: "Object".

/**
 * @aCustomTag {Number} foo
 */
// Settings: {"jsdoc":{"structuredTags":{"aCustomTag":{"type":true}}}}
// Message: Invalid JSDoc @aCustomTag "foo" type "Number"; prefer: "number".

The following patterns are not considered problems:

/**
 * @param {number} foo
 * @param {Bar} bar
 * @param {*} baz
 */
function quux (foo, bar, baz) {

}

/**
 * @arg {number} foo
 * @arg {Bar} bar
 * @arg {*} baz
 */
function quux (foo, bar, baz) {

}

/**
 * @param {(number | string | boolean)=} foo
 */
function quux (foo, bar, baz) {

}

/**
 * @param {typeof bar} foo
 */
function qux(foo) {
}

/**
 * @param {import('./foo').bar.baz} foo
 */
function qux(foo) {
}

/**
 * @param {(x: number, y: string) => string} foo
 */
function qux(foo) {
}

/**
 * @param {() => string} foo
 */
function qux(foo) {
}

/**
 * @returns {Number} foo
 * @throws {Number} foo
 */
function quux () {

}
// Options: [{"noDefaults":true}]

/**
 * @param {Object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"Object"}}}

/**
 * @param {Array} foo
 */
function quux (foo) {

}

/**
 * @param {Array.<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array":"GenericArray"}}}

/**
 * @param {Array<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array":"GenericArray"}}}

/**
 * @param {string[]} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array":"SpecialTypeArray","Array.<>":"SpecialTypeArray","Array<>":"SpecialTypeArray"}}}

/**
 * @param {string[]} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array.<>":"SpecialTypeArray","Array<>":"SpecialTypeArray"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]

/**
 * @param {Array} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"[]":"SpecialTypeArray"}}}

/**
 * @param {Array} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"[]":"SpecialTypeArray"}}}
// Options: [{"unifyParentAndChildTypeChecks":true}]

/**
 * @param {Array} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array.<>":"GenericArray"}}}

/**
 * @param {Array} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"Array<>":"GenericArray"}}}

/**
 * @param {object} foo
 */
function quux (foo) {

}

/**
 * @param {object.<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}

/**
 * @param {object<string>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}

/**
 * @param {object.<string, number>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}

/**
 * @param {object<string, number>} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object":"GenericObject"}}}

/**
 * @param {object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object.<>":"GenericObject"}}}

/**
 * @param {object} foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"preferredTypes":{"object<>":"GenericObject"}}}

/**
 * @param {Number<} Ignore the error as not a validating rule
 */
function quux (foo) {

}

/** @param {function(...)} callback The function to invoke. */
var subscribe = function(callback) {};

/**
 * @this {Array}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @export {Array}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}

/** @type {new() => EntityBase} */

/** @typedef {object} foo */
// Settings: {"jsdoc":{"preferredTypes":{"object":"Object"}}}
// Options: [{"exemptTagContexts":[{"tag":"typedef","types":true}]}]

/** @typedef {object<string, string>} foo */
// Settings: {"jsdoc":{"preferredTypes":{"object":"Object"}}}

/** @typedef {object<string, string>} foo */
// Settings: {"jsdoc":{"preferredTypes":{"object<>":"Object<>"}}}
// Options: [{"exemptTagContexts":[{"tag":"typedef","types":["object<string, string>"]}]}]

/**
 * @typedef {object} foo
 */

 /**
  * @typedef {Object} foo
  */
// Settings: {"jsdoc":{"preferredTypes":{"object":"Object","Object":"object"}}}

/**
 * @typedef {object} foo
 */
function a () {}

/**
 * @typedef {Object} foo
 */
function b () {}
// Settings: {"jsdoc":{"preferredTypes":{"object":"Object","Object":"object"}}}

/**
 * @typedef {object} foo
 */
function a () {}

/**
 * @typedef {Object} foo
 */
function b () {}
// Settings: {"jsdoc":{"mode":"typescript"}}

/**
 * @aCustomTag {Number} foo
 */
// Settings: {"jsdoc":{"structuredTags":{"aCustomTag":{"type":false}}}}

`check-values`

This rule checks the values for a handful of tags:

@version - Checks that there is a present and valid semver version value.
@since - As with @version
@license - Checks that there is a present and valid SPDX identifier or is present within an allowedLicenses option.
@author - Checks there is a value present, and if the option allowedAuthors is present, ensure that the author value is one of these array items.

Options

`allowedAuthors`

An array of allowable author values. If absent, only non-whitespace will be checked for.

`allowedLicenses`

An array of allowable license values or true to allow any license text. If present as an array, will be used in place of SPDX identifiers.

`licensePattern`

A string to be converted into a RegExp (with u flag) and whose first parenthetical grouping, if present, will match the portion of the license description to check (if no grouping is present, then the whole portion matched will be used). Defaults to ([^\n]*), i.e., the SPDX expression is expected before any line breaks.


Context	everywhere
Tags	`@version`, `@since`, `@license`, `@author`
Recommended	true
Options	`allowedAuthors`, `allowedLicenses`, `licensePattern`
Settings	`tagNamePreference`

The following patterns are considered problems:

/**
 * @version
 */
function quux (foo) {

}
// Message: Missing JSDoc @version.

/**
 * @version 3.1
 */
function quux (foo) {

}
// Message: Invalid JSDoc @version: "3.1".

/**
 * @since
 */
function quux (foo) {

}
// Message: Missing JSDoc @since.

/**
 * @since 3.1
 */
function quux (foo) {

}
// Message: Invalid JSDoc @since: "3.1".

/**
 * @license
 */
function quux (foo) {

}
// Message: Missing JSDoc @license.

/**
 * @license FOO
 */
function quux (foo) {

}
// Message: Invalid JSDoc @license: "FOO"; expected SPDX expression: https://spdx.org/licenses/.

/**
 * @license FOO
 */
function quux (foo) {

}
// Options: [{"allowedLicenses":["BAR","BAX"]}]
// Message: Invalid JSDoc @license: "FOO"; expected one of BAR, BAX.

/**
 * @license MIT-7
 * Some extra text...
 */
function quux (foo) {

}
// Message: Invalid JSDoc @license: "MIT-7"; expected SPDX expression: https://spdx.org/licenses/.

/**
 * @license (MIT OR GPL-2.5)
 */
function quux (foo) {

}
// Message: Invalid JSDoc @license: "(MIT OR GPL-2.5)"; expected SPDX expression: https://spdx.org/licenses/.

/**
 * @license MIT
 * Some extra text
 */
function quux (foo) {

}
// Options: [{"licensePattern":"[\\s\\S]*"}]
// Message: Invalid JSDoc @license: "MIT
Some extra text"; expected SPDX expression: https://spdx.org/licenses/.

/**
 * @author
 */
function quux (foo) {

}
// Message: Missing JSDoc @author.

/**
 * @author Brett Zamir
 */
function quux (foo) {

}
// Options: [{"allowedAuthors":["Gajus Kuizinas","golopot"]}]
// Message: Invalid JSDoc @author: "Brett Zamir"; expected one of Gajus Kuizinas, golopot.

The following patterns are not considered problems:

/**
 * @version 3.4.1
 */
function quux (foo) {

}

/**
 * @version      3.4.1
 */
function quux (foo) {

}

/**
 * @since 3.4.1
 */
function quux (foo) {

}

/**
 * @since      3.4.1
 */
function quux (foo) {

}

/**
 * @license MIT
 */
function quux (foo) {

}

/**
 * @license MIT
 * Some extra text...
 */
function quux (foo) {

}

/**
 * @license (MIT OR GPL-2.0)
 */
function quux (foo) {

}

/**
 * @license FOO
 */
function quux (foo) {

}
// Options: [{"allowedLicenses":["FOO","BAR","BAX"]}]

/**
 * @license FOO
 */
function quux (foo) {

}
// Options: [{"allowedLicenses":true}]

/**
 * @license MIT
 * Some extra text
 */
function quux (foo) {

}
// Options: [{"licensePattern":"[^\n]*"}]

/**
 * @author Gajus Kuizinas
 */
function quux (foo) {

}

/**
 * @author Brett Zamir
 */
function quux (foo) {

}
// Options: [{"allowedAuthors":["Gajus Kuizinas","golopot","Brett Zamir"]}]

`empty-tags`

Expects the following tags to be empty of any content:

@abstract
@async
@generator
@global
@hideconstructor
@ignore
@inheritdoc
@inner
@instance
@internal (used by TypeScript)
@override
@readonly

The following will also be expected to be empty unless settings.jsdoc.mode is set to "closure" (which allows types).

@package
@private
@protected
@public
@static

Note that @private will still be checked for content by this rule even with settings.jsdoc.ignorePrivate set to true (a setting which normally causes rules not to take effect).

Similarly, @internal will still be checked for content by this rule even with settings.jsdoc.ignoreInternal set to true.

Options

`tags`

If you want additional tags to be checked for their descriptions, you may add them within this option.

{
  'jsdoc/empty-tags': ['error', {tags: ['event']}]
}


Context	everywhere
Tags	`abstract`, `async`, `generator`, `global`, `hideconstructor`, `ignore`, `inheritdoc`, `inner`, `instance`, `internal`, `override`, `readonly`, `package`, `private`, `protected`, `public`, `static` and others added by `tags`
Recommended	true
Options	`tags`
The following patterns are considered problems:

/**
 * @abstract extra text
 */
function quux () {

}
// Message: @abstract should be empty.

class Test {
    /**
     * @abstract extra text
     */
    quux () {

    }
}
// Message: @abstract should be empty.

/**
 * @abstract extra text
 * @inheritdoc
 * @async out of place
 */
function quux () {

}
// Message: @abstract should be empty.

/**
 * @event anEvent
 */
function quux () {

}
// Options: [{"tags":["event"]}]
// Message: @event should be empty.

/**
 * @private {someType}
 */
function quux () {

}
// Message: @private should be empty.

/**
 * @internal {someType}
 */
function quux () {

}
// Message: @internal should be empty.

/**
 * @private {someType}
 */
function quux () {

}
// Settings: {"jsdoc":{"ignorePrivate":true}}
// Message: @private should be empty.

The following patterns are not considered problems:

/**
 * @abstract
 */
function quux () {

}

/**
 *
 */
function quux () {

}

/**
 * @param aName
 */
function quux () {

}

/**
 * @abstract
 * @inheritdoc
 * @async
 */
function quux () {

}

/**
 * @private {someType}
 */
function quux () {

}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @private
 */
function quux () {

}

/**
 * @internal
 */
function quux () {

}

/**
 * Create an array.
 *
 * @private
 *
 * @param {string[]} [elem] - Elements to make an array of.
 * @param {boolean} [clone] - Optionally clone nodes.
 * @returns {string[]} The array of nodes.
 */
function quux () {}

`implements-on-classes`

Reports an issue with any non-constructor function using @implements.

Constructor functions, whether marked with @class, @constructs, or being an ES6 class constructor, will not be flagged.

To indicate that a function follows another function's signature, one might instead use @type to indicate the @function or @callback to which the function is adhering.

Options

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied.

Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`implements` (prevented)
Recommended	true
Options	`contexts`

The following patterns are considered problems:

/**
 * @implements {SomeClass}
 */
function quux () {

}
// Message: @implements used on a non-constructor function

/**
 * @implements {SomeClass}
 */
function quux () {

}
// Options: [{"contexts":["any"]}]
// Message: @implements used on a non-constructor function

/**
 * @function
 * @implements {SomeClass}
 */
function quux () {

}
// Options: [{"contexts":["any"]}]
// Message: @implements used on a non-constructor function

/**
 * @callback
 * @implements {SomeClass}
 */
// Options: [{"contexts":["any"]}]
// Message: @implements used on a non-constructor function

/**
 * @implements {SomeClass}
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"implements":false}}}
// Message: Unexpected tag `@implements`

class Foo {
    /**
     * @implements {SomeClass}
     */
    constructor() {}

    /**
     * @implements {SomeClass}
     */
    bar() {}
}
// Options: [{"contexts":["MethodDefinition"]}]
// Message: @implements used on a non-constructor function

class Foo {
    /**
     * @implements {SomeClass}
     */
    constructor() {}

    /**
     * @implements {SomeClass}
     */
    bar() {}
}
// Options: [{"contexts":["any"]}]
// Message: @implements used on a non-constructor function

The following patterns are not considered problems:

/**
 * @implements {SomeClass}
 * @class
 */
function quux () {

}

/**
 * @implements {SomeClass}
 * @class
 */
function quux () {

}
// Options: [{"contexts":["any"]}]

/**
 * @implements {SomeClass}
 */
// Options: [{"contexts":["any"]}]

/**
 * @implements {SomeClass}
 * @constructor
 */
function quux () {

}

/**
 *
 */
class quux {
  /**
   * @implements {SomeClass}
   */
  constructor () {

  }
}

/**
 *
 */
const quux = class {
  /**
   * @implements {SomeClass}
   */
  constructor () {

  }
}

/**
 *
 */
function quux () {

}

/**
 *
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"implements":false}}}

/**
 * @function
 * @implements {SomeClass}
 */

/**
 * @callback
 * @implements {SomeClass}
 */

`match-description`

Enforces a regular expression pattern on descriptions.

The default is this basic expression to match English sentences (Support for Unicode upper case may be added in a future version when it can be handled by our supported Node versions):

^([A-Z]|[`\\d_])[\\s\\S]*[.?!`]$

Applies to the jsdoc block description and @description (or @desc) by default but the tags option (see below) may be used to match other tags.

Options

`matchDescription`

You can supply your own expression to override the default, passing a matchDescription string on the options object.

{
  'jsdoc/match-description': ['error', {matchDescription: '[A-Z].*\\.'}]
}

As with the default, the supplied regular expression will be applied with the Unicode ("u") flag and is not case-insensitive.

`tags`

If you want different regular expressions to apply to tags, you may use the tags option object:

{
  'jsdoc/match-description': ['error', {tags: {
    param: '\\- [A-Z].*\\.',
    returns: '[A-Z].*\\.'
  }}]
}

In place of a string, you can also add true to indicate that a particular tag should be linted with the matchDescription value (or the default).

{
  'jsdoc/match-description': ['error', {tags: {
    param: true,
    returns: true
  }}]
}

The tags @param/@arg/@argument and @property/@prop will be properly parsed to ensure that the matched "description" text includes only the text after the name.

All other tags will treat the text following the tag name, a space, and an optional curly-bracketed type expression (and another space) as part of its "description" (e.g., for @returns {someType} some description, the description is some description while for @some-tag xyz, the description is xyz).

`mainDescription`

If you wish to override the main function description without changing the default match-description, you may use mainDescription:

{
  'jsdoc/match-description': ['error', {
    mainDescription: '[A-Z].*\\.',
    tags: {
      param: true,
      returns: true
    }
  }]
}

There is no need to add mainDescription: true, as by default, the main function (and only the main function) is linted, though you may disable checking it by setting it to false.

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied (e.g., ClassDeclaration for ES6 classes). Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files.

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	docblock and `@description` by default but more with `tags`
Aliases	`@desc`
Recommended	false
Settings
Options	`contexts`, `tags` (accepts tags with names and optional type such as 'param', 'arg', 'argument', 'property', and 'prop', and accepts arbitrary list of other tags with an optional type (but without names), e.g., 'returns', 'return'), `mainDescription`, `matchDescription`

The following patterns are considered problems:

/**
 * foo.
 */
const q = class {

}
// Options: [{"contexts":["ClassExpression"]}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * foo.
 */
// Options: [{"contexts":["any"]}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * foo.
 */
// Options: [{"contexts":["any"]}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * foo.
 */
const q = {

};
// Options: [{"contexts":["ObjectExpression"]}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * foo.
 */
function quux () {

}
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo)
 */
function quux () {

}
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * тест.
 */
function quux () {

}
// Options: [{"matchDescription":"[А-Я][А-я]+\\."}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Abc.
 */
function quux () {

}
// Options: [{"mainDescription":"[А-Я][А-я]+\\.","tags":{"param":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo
 */
function quux () {

}
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @param foo foo.
 */
function quux (foo) {

}
// Options: [{"tags":{"param":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @template Abc, Def foo.
 */
function quux (foo) {

}
// Options: [{"tags":{"template":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @prop foo foo.
 */
function quux (foo) {

}
// Options: [{"tags":{"prop":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @summary foo.
 */
function quux () {

}
// Options: [{"tags":{"summary":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @author
 */
function quux () {

}
// Options: [{"tags":{"author":".+"}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @x-tag
 */
function quux () {

}
// Options: [{"tags":{"x-tag":".+"}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @description foo foo.
 */
function quux (foo) {

}
// Options: [{"tags":{"description":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo
 *
 * @param foo foo.
 */
function quux (foo) {

}
// Options: [{"mainDescription":"^[a-zA-Z]*$","tags":{"param":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo
 *
 * @param foo foo.
 */
function quux (foo) {

}
// Options: [{"mainDescription":false,"tags":{"param":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @param foo bar
 */
function quux (foo) {

}
// Options: [{"tags":{"param":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * {@see Foo.bar} buz
 */
function quux (foo) {

}
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @returns {number} foo
 */
function quux (foo) {

}
// Options: [{"tags":{"returns":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo.
 *
 * @returns foo.
 */
function quux (foo) {

}
// Options: [{"tags":{"returns":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * lorem ipsum dolor sit amet, consectetur adipiscing elit. pellentesque elit diam,
 * iaculis eu dignissim sed, ultrices sed nisi. nulla at ligula auctor, consectetur neque sed,
 * tincidunt nibh. vivamus sit amet vulputate ligula. vivamus interdum elementum nisl,
 * vitae rutrum tortor semper ut. morbi porta ante vitae dictum fermentum.
 * proin ut nulla at quam convallis gravida in id elit. sed dolor mauris, blandit quis ante at,
 * consequat auctor magna. duis pharetra purus in porttitor mollis.
 */
function longDescription (foo) {

}
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * @arg {number} foo - Foo
 */
function quux (foo) {

}
// Options: [{"tags":{"arg":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * @argument {number} foo - Foo
 */
function quux (foo) {

}
// Options: [{"tags":{"argument":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * @return {number} foo
 */
function quux (foo) {

}
// Options: [{"tags":{"return":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Returns bar.
 *
 * @return {number} bar
 */
function quux (foo) {

}
// Options: [{"tags":{"return":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * @param notRet
 * @returns Тест.
 */
function quux () {

}
// Options: [{"tags":{"param":"[А-Я][А-я]+\\."}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * @description notRet
 * @returns Тест.
 */
function quux () {

}
// Options: [{"tags":{"description":"[А-Я][А-я]+\\."}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * foo.
 */
class quux {

}
// Options: [{"contexts":["ClassDeclaration"]}]
// Message: JSDoc description does not satisfy the regex pattern.

class MyClass {
  /**
   * Abc
   */
  myClassField = 1
}
// Options: [{"contexts":["ClassProperty"]}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * foo.
 */
interface quux {

}
// Options: [{"contexts":["TSInterfaceDeclaration"]}]
// Message: JSDoc description does not satisfy the regex pattern.

const myObject = {
  /**
   * Bad description
   */
  myProp: true
};
// Options: [{"contexts":["Property"]}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * @param foo Foo bar
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}
// Options: [{"tags":{"param":true}}]
// Message: JSDoc description does not satisfy the regex pattern.

/**
 * Foo bar
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}
// Message: JSDoc description does not satisfy the regex pattern.

The following patterns are not considered problems:

/**
 *
 */

/**
 *
 */
 function quux () {

 }

/**
 * @param foo - Foo.
 */
function quux () {

}
// Options: [{"tags":{"param":true}}]

/**
 * Foo.
 */
function quux () {

}

/**
 * Foo.
 * Bar.
 */
function quux () {

}

/**
 * Foo.
 *
 * Bar.
 */
function quux () {

}

/**
 * Тест.
 */
function quux () {

}
// Options: [{"matchDescription":"[А-Я][А-я]+\\."}]

/**
 * @param notRet
 * @returns Тест.
 */
function quux () {

}
// Options: [{"tags":{"returns":"[А-Я][А-я]+\\."}}]

/**
 * @param notRet
 * @description Тест.
 */
function quux () {

}
// Options: [{"tags":{"description":"[А-Я][А-я]+\\."}}]

/**
 * Foo
 * bar.
 */
function quux () {

}

/**
 * @returns Foo bar.
 */
function quux () {

}
// Options: [{"tags":{"returns":true}}]

/**
 * @returns {type1} Foo bar.
 */
function quux () {

}
// Options: [{"tags":{"returns":true}}]

/**
 * @description Foo bar.
 */
function quux () {

}
// Options: [{"tags":{"description":true}}]

/**
 * Foo. {@see Math.sin}.
 */
function quux () {

}

/**
 * Foo {@see Math.sin} bar.
 */
function quux () {

}

/**
 * Foo?
 *
 * Bar!
 *
 * Baz:
 *   1. Foo.
 *   2. Bar.
 */
function quux () {

}

/**
 * Hello:
 * World.
 */
function quux () {

}

/**
 * Hello: world.
 */
function quux () {

}

/**
 * Foo
 * Bar.
 */
function quux () {

}

/**
 * Foo.
 *
 * foo.
 */
function quux () {

}

/**
 * foo.
 */
function quux () {

}
// Options: [{"mainDescription":false}]

/**
 * foo.
 */
class quux {

}

/**
 * foo.
 */
class quux {

}
// Options: [{"mainDescription":true}]

class MyClass {
  /**
   * Abc.
   */
  myClassField = 1
}
// Options: [{"contexts":["ClassProperty"]}]

/**
 * Foo.
 */
interface quux {

}
// Options: [{"contexts":["TSInterfaceDeclaration"]}]

const myObject = {
  /**
   * Bad description
   */
  myProp: true
};
// Options: [{"contexts":[]}]

/**
 * foo.
 */
const q = class {

}
// Options: [{"contexts":[]}]

/**
 * foo.
 */
const q = {

};
// Options: [{"contexts":[]}]

/**
 * @description foo.
 */
function quux () {

}
// Options: [{"tags":{"param":true}}]

/**
 * Foo.
 *
 * @summary Foo.
 */
function quux () {

}
// Options: [{"tags":{"summary":true}}]

/**
 * Foo.
 *
 * @author Somebody
 */
function quux () {

}
// Options: [{"tags":{"author":".+"}}]

/**
 * Foo.
 *
 * @x-tag something
 */
function quux () {

}
// Options: [{"tags":{"x-tag":".+"}}]

/**
 * Foo.
 *
 * @prop foo Foo.
 */
function quux (foo) {

}
// Options: [{"tags":{"prop":true}}]

/**
 * @param foo Foo bar.
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}

/**
 *
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}

/**
 * Foo.
 *
 * @template Abc, Def Foo.
 */
function quux (foo) {

}
// Options: [{"tags":{"template":true}}]

`newline-after-description`

Enforces a consistent padding of the block description.

Options

This rule allows one optional string argument. If it is "always" then a problem is raised when there is no newline after the description. If it is "never" then a problem is raised when there is a newline after the description. The default value is "always".


Context	everywhere
Tags	N/A (doc block)
Options	(a string matching `"always"
Recommended	true

The following patterns are considered problems:

/**
 * Foo.
 *
 * Foo.
 * @foo
 */
function quux () {

}
// Options: ["always"]
// Message: There must be a newline after the description of the JSDoc block.

/**
 * Foo.
 * @foo
 *
 * Foo.
 */
function quux () {

}
// Options: ["always"]
// Message: There must be a newline after the description of the JSDoc block.

/**
 * Foo.
 *
 * Foo.
 * @foo
 */
function quux () {

}
// Message: There must be a newline after the description of the JSDoc block.

/**
 * Bar.
 *
 * Bar.
 *
 * @bar
 */
function quux () {

}
// Options: ["never"]
// Message: There must be no newline after the description of the JSDoc block.

/**
 * Bar.
 *
 * @bar
 *
 * Bar.
 */
function quux () {

}
// Options: ["never"]
// Message: There must be no newline after the description of the JSDoc block.


         /**
          * Bar.
          *
          * Bar.
          *
          * @bar
          */
         function quux () {

         }
// Options: ["never"]
// Message: There must be no newline after the description of the JSDoc block.

/**
 * A.
 *
 * @typedef {object} A
 * @prop {boolean} a A.
 */
// Options: ["never"]
// Message: There must be no newline after the description of the JSDoc block.

/**
 * A.
 * @typedef {object} A
 * @prop {boolean} a A.
 */
// Options: ["always"]
// Message: There must be a newline after the description of the JSDoc block.


     /**
      * Service for fetching symbols.
      * @param {object} $http - Injected http helper.
      * @param {object} $q - Injected Promise api helper.
      * @param {object} $location - Injected window location object.
      * @param {object} REPORT_DIALOG_CONSTANTS - Injected handle.
      */
// Message: There must be a newline after the description of the JSDoc block.

/** An example function.
 *
 * @returns {number} An example number.
 */
function example() {
  return 42;
}
// Options: ["never"]
// Message: There must be no newline after the description of the JSDoc block.

/** An example function.
 * @returns {number} An example number.
 */
function example() {
  return 42;
}
// Options: ["always"]
// Message: There must be a newline after the description of the JSDoc block.

The following patterns are not considered problems:

/**
 * Foo.
 */
function quux () {

}
// Options: ["always"]

/**
 * Bar.
 */
function quux () {

}
// Options: ["never"]

/**
 * Foo.
 *
 * @foo
 */
function quux () {

}
// Options: ["always"]

/**
 * Bar.
 * @bar
 */
function quux () {

}
// Options: ["never"]


     /**
      * @foo
      * Test 
      * abc 
      * @bar 
      */


     /**
      * 
      * @foo
      * Test 
      * abc 
      * @bar 
      */

/***
 *
 */
function quux () {

}
// Options: ["always"]

/**
 * Parses query string to object containing URL parameters
 * 
 * @param queryString
 * Input string
 * 
 * @returns
 * Object containing URL parameters
 */
export function parseQueryString(queryString: string): { [key: string]: string } {    // <-- Line 10 that fails

}

/** An example function.
 *
 * @returns {number} An example number.
 */
function example() {
  return 42;
}

/** An example function.
 * @returns {number} An example number.
 */
function example() {
  return 42;
}
// Options: ["never"]

`no-bad-blocks`

This rule checks for multi-line-style comments which fail to meet the criteria of a jsdoc block, namely that it should begin with two asterisks, but which appear to be intended as jsdoc blocks due to the presence of whitespace followed by whitespace or asterisks, and an at-sign (@) and some non-whitespace (as with a jsdoc block tag).

Options

Takes an optional options object with the following.

`ignore`

An array of directives that will not be reported if present at the beginning of a multi-comment block and at-sign /* @.

Defaults to ['ts-check', 'ts-expect-error', 'ts-ignore', 'ts-nocheck'] (some directives used by TypeScript).


Context	Everywhere
Tags	N/A
Recommended	false
Options	`ignore`

The following patterns are considered problems:

/*
 * @param foo
 */
function quux (foo) {

}
// Message: Expected JSDoc-like comment to begin with two asterisks.

/*
 * @property foo
 */
// Message: Expected JSDoc-like comment to begin with two asterisks.

function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"name":false,"required":["name"]}}}}
// Message: Cannot add "name" to `require` with the tag's `name` set to `false`

/* @ts-ignore */
// Options: [{"ignore":[]}]
// Message: Expected JSDoc-like comment to begin with two asterisks.

/*
 * Some description.
 *
 * @returns {string} Some string
 */
function echo() {
  return 'Something';
}
// Message: Expected JSDoc-like comment to begin with two asterisks.

The following patterns are not considered problems:

/**
 * @property foo
 */

/**
 * @param foo
 */
 function quux () {

 }

function quux () {

}

/* This could just be intended as a regular multiline comment,
   so don't report this */
function quux () {

}

/* Just a regular multiline comment with an `@` but not appearing
    like a tag in a jsdoc-block, so don't report */
function quux () {

}

/* @ts-check */

/* @ts-expect-error */

/* @ts-ignore */

/* @ts-nocheck */

/* */

/* @custom */
// Options: [{"ignore":["custom"]}]

`no-defaults`

This rule reports defaults being used on the relevant portion of @param or @default. It also optionally reports the presence of the square-bracketed optional arguments at all.

The rule is intended to prevent the indication of defaults on tags where this would be redundant with ES6 default parameters (or for @default, where it would be redundant with the context to which the @default tag is attached).

Unless your @default is on a function, you will need to set contexts to an appropriate context, including, if you wish, "any".

Options

`noOptionalParamNames`

Set this to true to report the presence of optional parameters. May be used if the project is insisting on optionality being indicated by the presence of ES6 default parameters (bearing in mind that such "defaults" are only applied when the supplied value is missing or undefined but not for null or other "falsey" values).

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`param`, `default`
Aliases	`arg`, `argument`, `defaultvalue`
Recommended	false
Options	`contexts`, `noOptionalParamNames`

The following patterns are considered problems:

/**
 * @param {number} [foo="7"]
 */
function quux (foo) {

}
// Message: Defaults are not permitted on @param.

class Test {
    /**
     * @param {number} [foo="7"]
     */
    quux (foo) {

    }
}
// Message: Defaults are not permitted on @param.

/**
 * @param {number} [foo="7"]
 */
function quux (foo) {

}
// Options: [{"noOptionalParamNames":true}]
// Message: Optional param names are not permitted on @param.

/**
 * @arg {number} [foo="7"]
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"arg"}}}
// Message: Defaults are not permitted on @arg.

/**
 * @param {number} [foo="7"]
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]
// Message: Defaults are not permitted on @param.

/**
 * @function
 * @param {number} [foo="7"]
 */
// Options: [{"contexts":["any"]}]
// Message: Defaults are not permitted on @param.

/**
 * @callback
 * @param {number} [foo="7"]
 */
// Options: [{"contexts":["any"]}]
// Message: Defaults are not permitted on @param.

/**
 * @default {}
 */
const a = {};
// Options: [{"contexts":["any"]}]
// Message: Default values are not permitted on @default.

/**
 * @defaultvalue {}
 */
const a = {};
// Settings: {"jsdoc":{"tagNamePreference":{"default":"defaultvalue"}}}
// Options: [{"contexts":["any"]}]
// Message: Default values are not permitted on @defaultvalue.

The following patterns are not considered problems:

/**
 * @param foo
 */
function quux (foo) {

}

/**
 * @param {number} foo
 */
function quux (foo) {

}

/**
 * @param foo
 */
// Options: [{"contexts":["any"]}]

/**
 * @function
 * @param {number} foo
 */

/**
 * @callback
 * @param {number} foo
 */

/**
 * @param {number} foo
 */
function quux (foo) {

}
// Options: [{"noOptionalParamNames":true}]

/**
 * @default
 */
const a = {};
// Options: [{"contexts":["any"]}]

`no-types`

This rule reports types being used on @param or @returns.

The rule is intended to prevent the indication of types on tags where the type information would be redundant with TypeScript.

Options

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`param`, `returns`
Aliases	`arg`, `argument`, `return`
Recommended	false
Options	`contexts`

The following patterns are considered problems:

/**
 * @param {number} foo
 */
function quux (foo) {

}
// Message: Types are not permitted on @param.

class quux {
  /**
   * @param {number} foo
   */
  bar (foo) {

  }
}
// Message: Types are not permitted on @param.

/**
 * @param {number} foo
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]
// Message: Types are not permitted on @param.

class quux {
  /**
   * @param {number} foo
   */
  quux (foo) {

  }
}
// Options: [{"contexts":["any"]}]
// Message: Types are not permitted on @param.

/**
 * @function
 * @param {number} foo
 */
// Options: [{"contexts":["any"]}]
// Message: Types are not permitted on @param.

/**
 * @callback
 * @param {number} foo
 */
// Options: [{"contexts":["any"]}]
// Message: Types are not permitted on @param.

/**
 * @returns {number}
 */
function quux () {

}
// Message: Types are not permitted on @returns.

/**
 * Beep
 * Boop
 *
 * @returns {number}
 */
function quux () {

}
// Message: Types are not permitted on @returns.

The following patterns are not considered problems:

/**
 * @param foo
 */
function quux (foo) {

}

/**
 * @param foo
 */
// Options: [{"contexts":["any"]}]

/**
 * @function
 * @param {number} foo
 */

/**
 * @callback
 * @param {number} foo
 */

`no-undefined-types`

Checks that types in jsdoc comments are defined. This can be used to check unimported types.

When enabling this rule, types in jsdoc comments will resolve as used variables, i.e. will not be marked as unused by no-unused-vars.

In addition to considering globals found in code (or in ESLint-indicated globals) as defined, the following tags will also be checked for name(path) definitions to also serve as a potential "type" for checking the tag types in the table below:

@callback, @class (or @constructor), @constant (or @const), @event, @external (or @host), @function (or @func or @method), @interface, @member (or @var), @mixin, @name, @namespace, @template (for "closure" or "typescript" settings.jsdoc.mode only), @typedef.

The following tags will also be checked but only when the mode is closure:

@package, @private, @protected, @public, @static

The following types are always considered defined.

null, undefined, void, string, boolean, object, function, symbol
number, bigint, NaN, Infinity
any, *
this, true, false
Array, Object, RegExp, Date, Function

Note that preferred types indicated within settings.jsdoc.preferredTypes will also be assumed to be defined.

Also note that if there is an error parsing types for a tag, the function will silently ignore that tag, leaving it to the valid-types rule to report parsing errors.

If you define your own tags, you can use settings.jsdoc.structuredTags to indicate that a tag's name is "namepath-defining" (and should prevent reporting on use of that namepath elsewhere) and/or that a tag's type is false (and should not be checked for types).

Options

An option object may have the following key:

definedTypes - This array can be populated to indicate other types which are automatically considered as defined (in addition to globals, etc.). Defaults to an empty array.


Context	everywhere
Tags	`augments`, `class`, `constant`, `enum`, `implements`, `member`, `module`, `namespace`, `param`, `property`, `returns`, `throws`, `type`, `typedef`, `yields`
Aliases	`constructor`, `const`, `extends`, `var`, `arg`, `argument`, `prop`, `return`, `exception`, `yield`
Closure-only	`package`, `private`, `protected`, `public`, `static`
Recommended	true
Options	`definedTypes`
Settings	`preferredTypes`, `mode`, `structuredTags`

The following patterns are considered problems:

/**
 * @param {HerType} baz - Foo.
 */
function quux(foo, bar, baz) {

}
// Settings: {"jsdoc":{"preferredTypes":{"HerType":1000}}}
// Message: Invalid `settings.jsdoc.preferredTypes`. Values must be falsy, a string, or an object.

/**
 * @param {HerType} baz - Foo.
 */
function quux(foo, bar, baz) {

}
// Settings: {"jsdoc":{"preferredTypes":{"HerType":false}}}
// Message: The type 'HerType' is undefined.

/**
 * @param {strnig} foo - Bar.
 */
function quux(foo) {

}
// Message: The type 'strnig' is undefined.

/**
 * @param {MyType} foo - Bar.
 * @param {HisType} bar - Foo.
 */
function quux(foo, bar) {

}
// Options: [{"definedTypes":["MyType"]}]
// Message: The type 'HisType' is undefined.

/**
 * @param {MyType} foo - Bar.
 * @param {HisType} bar - Foo.
 * @param {HerType} baz - Foo.
 */
function quux(foo, bar, baz) {

}
// Settings: {"jsdoc":{"preferredTypes":{"hertype":{"replacement":"HerType"}}}}
// Options: [{"definedTypes":["MyType"]}]
// Message: The type 'HisType' is undefined.

 /**
  * @param {MyType} foo - Bar.
  * @param {HisType} bar - Foo.
  * @param {HerType} baz - Foo.
  */
function quux(foo, bar, baz) {

}
// Settings: {"jsdoc":{"preferredTypes":{"hertype":{"replacement":false},"histype":"HisType"}}}
// Options: [{"definedTypes":["MyType"]}]
// Message: The type 'HerType' is undefined.

/**
 * @template TEMPLATE_TYPE
 * @param {WRONG_TEMPLATE_TYPE} bar
 */
function foo (bar) {
};
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: The type 'WRONG_TEMPLATE_TYPE' is undefined.

class Foo {
  /**
   * @return {TEMPLATE_TYPE}
   */
  bar () {
  }
}
// Message: The type 'TEMPLATE_TYPE' is undefined.

class Foo {
  /**
   * @return {TEMPLATE_TYPE}
   */
  invalidTemplateReference () {
  }
}

/**
 * @template TEMPLATE_TYPE
 */
class Bar {
  /**
   * @return {TEMPLATE_TYPE}
   */
  validTemplateReference () {
  }
}
// Settings: {"jsdoc":{"mode":"typescript"}}
// Message: The type 'TEMPLATE_TYPE' is undefined.

/**
 * @type {strnig}
 */
var quux = {

};
// Message: The type 'strnig' is undefined.

/**
 * @template TEMPLATE_TYPE_A, TEMPLATE_TYPE_B
 */
class Foo {
  /**
   * @param {TEMPLATE_TYPE_A} baz
   * @return {TEMPLATE_TYPE_B}
   */
  bar (baz) {
  }
}
// Message: The type 'TEMPLATE_TYPE_A' is undefined.

/**
 * @param {...VAR_TYPE} varargs
 */
function quux (varargs) {
}
// Message: The type 'VAR_TYPE' is undefined.

/**
 * @this {Navigator}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: The type 'Navigator' is undefined.

/**
 * @export {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: The type 'SomeType' is undefined.

/**
 * @aCustomTag {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"structuredTags":{"aCustomTag":{"type":true}}}}
// Message: The type 'SomeType' is undefined.

/**
 * @namepathDefiner SomeType
 */
/**
 * @type {SomeType}
 */
// Settings: {"jsdoc":{"structuredTags":{"namepathDefiner":{"name":"namepath-referencing"}}}}
// Message: The type 'SomeType' is undefined.

/**
 * @namepathDefiner SomeType
 */
/**
 * @type {SomeType}
 */
// Message: The type 'SomeType' is undefined.

/**
 * @template abc TEMPLATE_TYPE
 * @param {TEMPLATE_TYPE} bar
 */
function foo (bar) {
};
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: The type 'TEMPLATE_TYPE' is undefined.

The following patterns are not considered problems:

/**
 * @param {string} foo - Bar.
 */
function quux(foo) {

}

/**
 * @param {Promise} foo - Bar.
 */
function quux(foo) {

}

class MyClass {}

/**
 * @param {MyClass} foo - Bar.
 */
function quux(foo) {
  console.log(foo);
}

quux(0);

const MyType = require('my-library').MyType;

/**
 * @param {MyType} foo - Bar.
 */
  function quux(foo) {

}

const MyType = require('my-library').MyType;

/**
 * @param {MyType} foo - Bar.
 */
  function quux(foo) {

}

const MyType = require('my-library').MyType;

/**
 * @param {MyType} foo - Bar.
 */
  function quux(foo) {

}

import {MyType} from 'my-library';

/**
 * @param {MyType} foo - Bar.
 * @param {object<string, number>} foo
 * @param {Array<string>} baz
 */
  function quux(foo, bar, baz) {

}

/*globals MyType*/

/**
 * @param {MyType} foo - Bar.
 * @param {HisType} bar - Foo.
 */
  function quux(foo, bar) {

}

/**
 * @typedef {object} hello
 * @property {string} a - a.
 */

/**
 * @param {hello} foo
 */
function quux(foo) {

}

/**
 * @param {Array<syntaxError} foo
 */
function quux(foo) {

}

/**
 * Callback test.
 *
 * @callback addStuffCallback
 * @param {String} sum - An test integer.
 */
/**
 * Test Eslint.
 *
 * @param {addStuffCallback} callback - A callback to run.
 */
function testFunction(callback) {
  callback();
}

/**
 *
 *
 */
function foo () {

}

/**
 *
 *
 */
function foo () {

}

/**
 * @param {MyType} foo - Bar.
 * @param {HisType} bar - Foo.
 */
function quux(foo, bar) {

}
// Options: [{"definedTypes":["MyType","HisType"]}]

/**
 * @param {MyType} foo - Bar.
 * @param {HisType} bar - Foo.
 * @param {HerType} baz - Foo.
 */
function quux(foo, bar, baz) {

}
// Settings: {"jsdoc":{"preferredTypes":{"hertype":{"replacement":"HerType"},"histype":"HisType"}}}
// Options: [{"definedTypes":["MyType"]}]

/**
 * @param {MyType} foo - Bar.
 * @param {HisType} bar - Foo.
 * @param {HerType} baz - Foo.
 */
function quux(foo, bar, baz) {

}
// Settings: {"jsdoc":{"preferredTypes":{"hertype":{"replacement":"HerType<>"},"histype":"HisType.<>"}}}
// Options: [{"definedTypes":["MyType"]}]

/**
 * @template TEMPLATE_TYPE
 * @param {TEMPLATE_TYPE} bar
 * @return {TEMPLATE_TYPE}
 */
function foo (bar) {
};
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @template TEMPLATE_TYPE
 */
class Foo {
  /**
   * @return {TEMPLATE_TYPE}
   */
  bar () {
  }
}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @template TEMPLATE_TYPE
 */
class Foo {
  /**
   * @return {TEMPLATE_TYPE}
   */
  bar () {}

  /**
   * @return {TEMPLATE_TYPE}
   */
  baz () {}
}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @template TEMPLATE_TYPE_A, TEMPLATE_TYPE_B
 */
class Foo {
  /**
   * @param {TEMPLATE_TYPE_A} baz
   * @return {TEMPLATE_TYPE_B}
   */
  bar (baz) {
  }
}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @template TEMPLATE_TYPE_A, TEMPLATE_TYPE_B - Some description
 */
class Foo {
  /**
   * @param {TEMPLATE_TYPE_A} baz
   * @return {TEMPLATE_TYPE_B}
   */
  bar (baz) {
  }
}
// Settings: {"jsdoc":{"mode":"closure"}}

/****/

/**
 *
 */
function quux () {

}

/**
 * @typedef {object} BaseObject
 */
/**
 * Run callback when hooked method is called.
 *
 * @template {BaseObject} T
 * @param {T} obj - object whose method should be hooked.
 * @param {string} method - method which should be hooked.
 * @param {(sender: T) => void} callback - callback which should
 * be called when the hooked method was invoked.
 */
function registerEvent(obj, method, callback) {

}
// Settings: {"jsdoc":{"mode":"typescript"}}

 /**
 * @param {...} varargs
 */
function quux (varargs) {
}

/**
 * @param {...number} varargs
 */
function quux (varargs) {
}

class Navigator {}
/**
 * @this {Navigator}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}

class SomeType {}
/**
 * @export {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @template T
 * @param {T} arg
 */
function example(arg) {

  /** @param {T} */
  function inner(x) {
  }
}
// Settings: {"jsdoc":{"mode":"closure"}}

const init = () => {
  /**
   * Makes request
   * @returns {Promise}
   */
  function request() {
    return Promise.resolve('success');
  }
};

/** Gets a Promise resolved with a given value.
 *
 * @template ValueType
 * @param {ValueType} value Value to resolve.
 * @returns {Promise<ValueType>} Promise resolved with value.
 */
exports.resolve1 = function resolve1(value) {
  return Promise.resolve(value);
};
// Settings: {"jsdoc":{"mode":"typescript"}}

/**
 * A function returning the same type as its argument.
 *
 * @template ValueType
 * @typedef {ValueType} ValueFunc
 */
// Settings: {"jsdoc":{"mode":"typescript"}}

/**
 * @aCustomTag {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"structuredTags":{"aCustomTag":{"type":false}}}}

/**
 * @namepathDefiner SomeType
 */
/**
 * @type {SomeType}
 */
// Settings: {"jsdoc":{"structuredTags":{"namepathDefiner":{"name":"namepath-defining"}}}}

class Test {
  /**
   * Method.
   *
   * @returns {this} Return description.
   */
  method (): this {
    return this;
  }
}

`require-description-complete-sentence`

Requires that block description, explicit @description, and @param/@returns tag descriptions are written in complete sentences, i.e.,

Description must start with an uppercase alphabetical character.
Paragraphs must start with an uppercase alphabetical character.
Sentences must end with a period.
Every line in a paragraph (except the first) which starts with an uppercase character must be preceded by a line ending with a period.
A colon or semi-colon followed by two line breaks is still part of the containing paragraph (unlike normal dual line breaks).
Text within inline tags {...} are not checked for sentence divisions.
Periods after items within the abbreviations option array are not treated as sentence endings.

Options

`tags`

If you want additional tags to be checked for their descriptions, you may add them within this option.

{
  'jsdoc/require-description-complete-sentence': ['error', {
    tags: ['see', 'copyright']
  }]
}

The tags @param/@arg/@argument and @property/@prop will be properly parsed to ensure that the checked "description" text includes only the text after the name.

All other tags will treat the text following the tag name, a space, and an optional curly-bracketed type expression (and another space) as part of its "description" (e.g., for @returns {someType} some description, the description is some description while for @some-tag xyz, the description is xyz).

`abbreviations`

You can provide an abbreviations options array to avoid such strings of text being treated as sentence endings when followed by dots. The . is not necessary at the end of the array items.

`newlineBeforeCapsAssumesBadSentenceEnd`

When false (the new default), we will not assume capital letters after newlines are an incorrect way to end the sentence (they may be proper nouns, for example).


Context	everywhere
Tags	doc block, `param`, `returns`, `description`, `property`, `summary`, `file`, `classdesc`, `todo`, `deprecated`, `throws`, 'yields' and others added by `tags`
Aliases	`arg`, `argument`, `return`, `desc`, `prop`, `fileoverview`, `overview`, `exception`, `yield`
Recommended	false
Options	`tags`, `abbreviations`, `newlineBeforeCapsAssumesBadSentenceEnd`
The following patterns are considered problems:

/**
 * foo.
 */
function quux () {

}
// Message: Sentence should start with an uppercase character.

/**
 * foo?
 */
function quux () {

}
// Message: Sentence should start with an uppercase character.

/**
 * @description foo.
 */
function quux () {

}
// Message: Sentence should start with an uppercase character.

/**
 * Foo)
 */
function quux () {

}
// Message: Sentence must end with a period.

/**
 * `foo` is a variable
 */
function quux () {

}
// Message: Sentence must end with a period.

/**
 * Foo.
 *
 * foo.
 */
function quux () {

}
// Message: Sentence should start with an uppercase character.

/**
 * тест.
 */
function quux () {

}
// Message: Sentence should start with an uppercase character.

/**
 * Foo
 */
function quux () {

}
// Message: Sentence must end with a period.

/**
 * Foo
 * Bar.
 */
function quux () {

}
// Options: [{"newlineBeforeCapsAssumesBadSentenceEnd":true}]
// Message: A line of text is started with an uppercase character, but preceding line does not end the sentence.

/**
 * Foo.
 *
 * @param foo foo.
 */
function quux (foo) {

}
// Message: Sentence should start with an uppercase character.

/**
 * Foo.
 *
 * @param foo bar
 */
function quux (foo) {

}
// Message: Sentence should start with an uppercase character.

/**
 * {@see Foo.bar} buz
 */
function quux (foo) {

}
// Message: Sentence should start with an uppercase character.

/**
 * Foo.
 *
 * @returns {number} foo
 */
function quux (foo) {

}
// Message: Sentence should start with an uppercase character.

/**
 * Foo.
 *
 * @returns foo.
 */
function quux (foo) {

}
// Message: Sentence should start with an uppercase character.

/**
 * lorem ipsum dolor sit amet, consectetur adipiscing elit. pellentesque elit diam,
 * iaculis eu dignissim sed, ultrices sed nisi. nulla at ligula auctor, consectetur neque sed,
 * tincidunt nibh. vivamus sit amet vulputate ligula. vivamus interdum elementum nisl,
 * vitae rutrum tortor semper ut. morbi porta ante vitae dictum fermentum.
 * proin ut nulla at quam convallis gravida in id elit. sed dolor mauris, blandit quis ante at,
 * consequat auctor magna. duis pharetra purus in porttitor mollis.
 */
function longDescription (foo) {

}
// Message: Sentence should start with an uppercase character.

/**
 * @arg {number} foo - Foo
 */
function quux (foo) {

}
// Message: Sentence must end with a period.

/**
 * @argument {number} foo - Foo
 */
function quux (foo) {

}
// Message: Sentence must end with a period.

/**
 * @return {number} foo
 */
function quux (foo) {

}
// Message: Sentence should start with an uppercase character.

/**
 * Returns bar.
 *
 * @return {number} bar
 */
function quux (foo) {

}
// Message: Sentence should start with an uppercase character.

/**
 * @throws {object} Hello World
 * hello world
*/
// Message: Sentence must end with a period.

/**
 * @summary Foo
 */
function quux () {

}
// Message: Sentence must end with a period.

/**
 * @throws {SomeType} Foo
 */
function quux () {

}
// Message: Sentence must end with a period.

/**
 * @see Foo
 */
function quux () {

}
// Options: [{"tags":["see"]}]
// Message: Sentence must end with a period.

/**
 * @param foo Foo bar
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}
// Options: [{"tags":["param"]}]
// Message: Sentence must end with a period.

/**
 * Sorry, but this isn't a complete sentence, Mr.
 */
function quux () {

}
// Options: [{"abbreviations":["Mr"]}]
// Message: Sentence must end with a period.

/**
 * Sorry, but this isn't a complete sentence Mr.
 */
function quux () {

}
// Options: [{"abbreviations":["Mr."]}]
// Message: Sentence must end with a period.

/**
 * Sorry, but this isn't a complete sentence Mr. 
 */
function quux () {

}
// Options: [{"abbreviations":["Mr"]}]
// Message: Sentence must end with a period.

/**
 * Sorry, but this isn't a complete sentence Mr. and Mrs.
 */
function quux () {

}
// Options: [{"abbreviations":["Mr","Mrs"]}]
// Message: Sentence must end with a period.

/**
 * This is a complete sentence. But this isn't, Mr.
 */
function quux () {

}
// Options: [{"abbreviations":["Mr"]}]
// Message: Sentence must end with a period.

/**
 * This is a complete Mr. sentence. But this isn't, Mr.
 */
function quux () {

}
// Options: [{"abbreviations":["Mr"]}]
// Message: Sentence must end with a period.

/**
 * This is a complete Mr. sentence.
 */
function quux () {

}
// Message: Sentence should start with an uppercase character.

/**
 * This is fun, i.e. enjoyable, but not superlatively so, e.g. not
 * super, wonderful, etc..
 */
function quux () {

}
// Message: Sentence should start with an uppercase character.

/**
 * Do not have dynamic content; e.g. homepage. Here a simple unique id
 * suffices.
 */
 function quux () {

 }
// Message: Sentence should start with an uppercase character.

/**
 * Implements support for the
 * Swahili voice synthesizer.
 */
function speak() {
}
// Options: [{"newlineBeforeCapsAssumesBadSentenceEnd":true}]
// Message: A line of text is started with an uppercase character, but preceding line does not end the sentence.

/**
 * Foo.
 *
 * @template TempA, TempB foo.
 */
function quux (foo) {

}
// Options: [{"tags":["template"]}]
// Message: Sentence should start with an uppercase character.

The following patterns are not considered problems:

/**
 * @param foo - Foo.
 */
function quux () {

}

/**
 * Foo.
 */
function quux () {

}

/**
 * Foo.
 * Bar.
 */
function quux () {

}

/**
 * Foo.
 *
 * Bar.
 */
function quux () {

}

/**
 * Тест.
 */
function quux () {

}

/**
 * Foo
 * bar.
 */
function quux () {

}

/**
 * @returns Foo bar.
 */
function quux () {

}

/**
 * Foo. {@see Math.sin}.
 */
function quux () {

}

/**
 * Foo {@see Math.sin} bar.
 */
function quux () {

}

/**
 * Foo?
 *
 * Bar!
 *
 * Baz:
 *   1. Foo.
 *   2. Bar.
 */
function quux () {

}

/**
 * Hello:
 * World.
 */
function quux () {

}

/**
 * Hello: world.
 */
function quux () {

}

/**
 *
 */
function quux () {

}

/**
 * @description Foo.
 */
function quux () {

}

/**
 * `foo` is a variable.
 */
function quux () {

}

/**
 * Foo.
 *
 * `foo`.
 */
function quux () {

}

/**
 * @param foo - `bar`.
 */
function quux () {

}

/**
 * @returns {number} `foo`.
 */
function quux () {

}

/**
 * Foo
 * `bar`.
 */
function quux () {

}

/**
 * @example Foo
 */
function quux () {

}

/**
 * @see Foo
 */
function quux () {

}

/**
 * Foo.
 *
 * @param foo Foo.
 */
function quux (foo) {

}

/**
 * Foo.
 *
 * @param foo Foo.
 */
function quux (foo) {

}
// Options: [{"tags":["param"]}]

/**
 * @param foo Foo bar.
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}
// Options: [{"tags":["param"]}]

/**
 *
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}

/**
* We stop loading Items when we have loaded:
*
* 1) The main Item;
* 2) All its variants.
*/

/**
 * This method is working on 2 steps.
 *
 * | Step | Comment     |
 * |------|-------------|
 * |   1  | do it       |
 * |   2  | do it again |
 */

/**
 * This is something that
 * I want to test.
 */
function quux () {

}

/**
 * When making HTTP requests, the
 * URL is super important.
 */
function quux () {

}

/**
 * Sorry, but this isn't a complete sentence, Mr.
 */
function quux () {

}

/**
 * Sorry, but this isn't a complete sentence Mr..
 */
function quux () {

}
// Options: [{"abbreviations":["Mr."]}]

/**
 * Sorry, but this isn't a complete sentence Mr. 
 */
function quux () {

}

/**
 * Sorry, but this isn't a complete sentence Mr. and Mrs..
 */
function quux () {

}
// Options: [{"abbreviations":["Mr","Mrs"]}]

/**
 * This is a complete sentence aMr.
 */
function quux () {

}
// Options: [{"abbreviations":["Mr"]}]

/**
 * This is a complete sentence. But this isn't, Mr.
 */
function quux () {

}

/**
 * This is a complete Mr. Sentence. But this isn't, Mr.
 */
function quux () {

}

/**
 * This is a complete Mr. sentence.
 */
function quux () {

}
// Options: [{"abbreviations":["Mr"]}]

/**
 * This is fun, i.e. enjoyable, but not superlatively so, e.g. not
 * super, wonderful, etc..
 */
function quux () {

}
// Options: [{"abbreviations":["etc","e.g.","i.e."]}]


**
* Do not have dynamic content; e.g. homepage. Here a simple unique id
* suffices.
*/
function quux () {

}
// Options: [{"abbreviations":["etc","e.g.","i.e."]}]

/**
 * Implements support for the
 * Swahili voice synthesizer.
 */
function speak() {
}

/**
 * @param foo
 *
 * @returns {void}
 */
export default (foo) => {
  foo()
}

`require-description`

Requires that all functions have a description.

All functions must have an implicit description (e.g., text above tags) or have the option descriptionStyle set to tag (requiring @description (or @desc if that is set as your preferred tag name)).
Every jsdoc block description (or @description tag if descriptionStyle is "tag") must have a non-empty description that explains the purpose of the method.

Options

An options object may have any of the following properties:

contexts - Set to an array of strings representing the AST context where you wish the rule to be applied (e.g., ClassDeclaration for ES6 classes). Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files.
exemptedBy - Array of tags (e.g., ['type']) whose presence on the document block avoids the need for a @description. Defaults to an array with inheritdoc. If you set this array, it will overwrite the default, so be sure to add back inheritdoc if you wish its presence to cause exemption of the rule.
descriptionStyle - Whether to accept implicit descriptions ("body") or @description tags ("tag") as satisfying the rule. Set to "any" to accept either style. Defaults to "body".
checkConstructors - A value indicating whether constructors should be checked. Defaults to true.
checkGetters - A value indicating whether getters should be checked. Defaults to true.
checkSetters - A value indicating whether setters should be checked. Defaults to true.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`description` or jsdoc block
Aliases	`desc`
Recommended	false
Options	`contexts`, `exemptedBy`, `descriptionStyle`, `checkConstructors`, `checkGetters`, `checkSetters`
Settings	`overrideReplacesDocs`, `augmentsExtendsReplacesDocs`, `implementsReplacesDocs`

The following patterns are considered problems:

/**
 *
 */
function quux () {

}
// Options: [{"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description declaration.

/**
 *
 */
function quux () {

}
// Options: [{"descriptionStyle":"any"}]
// Message: Missing JSDoc block description or @description declaration.

/**
 *
 */
function quux () {

}
// Options: [{"descriptionStyle":"body"}]
// Message: Missing JSDoc block description.

/**
 * @desc Not a blank description
 */
function quux () {

}
// Options: [{"descriptionStyle":"body"}]
// Message: Remove the @desc tag to leave a plain block description or add additional description text above the @desc line.

/**
 * @description Not a blank description
 */
function quux () {

}
// Options: [{"descriptionStyle":"body"}]
// Message: Remove the @description tag to leave a plain block description or add additional description text above the @description line.

/**
 *
 */
class quux {

}
// Options: [{"contexts":["ClassDeclaration"],"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description declaration.

/**
 *
 */
// Options: [{"contexts":["any"],"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description declaration.

/**
 *
 */
class quux {

}
// Options: [{"contexts":["ClassDeclaration"],"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description declaration.

/**
 *
 */
class quux {

}
// Options: [{"contexts":["ClassDeclaration"],"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description declaration.

/**
 * @description
 */
function quux () {

}
// Options: [{"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description description.

/**
 *
 */
interface quux {

}
// Options: [{"contexts":["TSInterfaceDeclaration"],"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description declaration.

/**
 *
 */
var quux = class {

};
// Options: [{"contexts":["ClassExpression"],"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description declaration.

/**
 *
 */
var quux = {

};
// Options: [{"contexts":["ObjectExpression"],"descriptionStyle":"tag"}]
// Message: Missing JSDoc @description declaration.

/**
 * @someDesc
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":{"message":"Please avoid `{{tagName}}`; use `{{replacement}}` instead","replacement":"someDesc"}}}}
// Options: [{"descriptionStyle":"tag"}]
// Message: Missing JSDoc @someDesc description.

/**
 * @description
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}
// Options: [{"descriptionStyle":"tag"}]
// Message: Unexpected tag `@description`

/**
 * @description
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}
// Options: [{"descriptionStyle":"any"}]
// Message: Missing JSDoc block description or @description declaration.

/**
 *
 */
function quux () {
}
// Options: [{"exemptedBy":["notPresent"]}]
// Message: Missing JSDoc block description.

class TestClass {
  /**
   *
   */
  constructor() { }
}
// Message: Missing JSDoc block description.

class TestClass {
  /**
   *
   */
  constructor() { }
}
// Options: [{"checkConstructors":true}]
// Message: Missing JSDoc block description.

class TestClass {
  /**
   *
   */
  get Test() { }
}
// Message: Missing JSDoc block description.

class TestClass {
  /**
   *
   */
  get Test() { }
}
// Options: [{"checkGetters":true}]
// Message: Missing JSDoc block description.

class TestClass {
  /**
   *
   */
  set Test(value) { }
}
// Message: Missing JSDoc block description.

class TestClass {
  /**
   *
   */
  set Test(value) { }
}
// Options: [{"checkSetters":true}]
// Message: Missing JSDoc block description.

/**
 *
 */
class Foo {
    /**
     *
     */
    constructor() {}

    /**
     *
     */
    bar() {}
}
// Options: [{"checkConstructors":false,"contexts":["MethodDefinition"]}]
// Message: Missing JSDoc block description.

The following patterns are not considered problems:

/**
 *
 */

/**
 * @description
 * // arbitrary description content
 */
function quux () {

}
// Options: [{"descriptionStyle":"tag"}]

/**
 * @description
 * quux(); // does something useful
 */
function quux () {

}
// Options: [{"descriptionStyle":"tag"}]

/**
 * @description <caption>Valid usage</caption>
 * quux(); // does something useful
 *
 * @description <caption>Invalid usage</caption>
 * quux('random unwanted arg'); // results in an error
 */
function quux () {

}
// Options: [{"descriptionStyle":"tag"}]

/**
 *
 */
class quux {

}
// Options: [{"descriptionStyle":"tag"}]

/**
 *
 */
function quux () {

}
// Options: [{"contexts":["ClassDeclaration"]}]

/**
 * @type {MyCallback}
 */
function quux () {

}
// Options: [{"exemptedBy":["type"]}]

/**
 *
 */
interface quux {

}
// Options: [{"descriptionStyle":"tag"}]

interface quux {
  /**
   * If the thing should be checked.
   */
  checked?: boolean
}
// Options: [{"contexts":["TSPropertySignature"]}]

/**
 *
 */
var quux = class {

};
// Options: [{"descriptionStyle":"tag"}]

/**
 *
 */
var quux = {

};
// Options: [{"descriptionStyle":"tag"}]

/**
 * Has an implicit description
 */
function quux () {

}
// Options: [{"descriptionStyle":"body"}]

/**
 * Has an implicit description
 */
function quux () {

}

/**
 * Has an implicit description
 */
function quux () {

}
// Options: [{"descriptionStyle":"any"}]

/**
 * @description Has an explicit description
 */
function quux () {

}
// Options: [{"descriptionStyle":"any"}]

/**
 *
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"description":false}}}

class TestClass {
  /**
   * Test.
   */
  constructor() { }
}

class TestClass {
  /**
   *
   */
  constructor() { }
}
// Options: [{"checkConstructors":false}]

class TestClass {
  /**
   * Test.
   */
  get Test() { }
}

class TestClass {
  /**
   *
   */
  get Test() { }
}
// Options: [{"checkGetters":false}]

class TestClass {
  /**
   * Test.
   */
  set Test(value) { }
}

class TestClass {
  /**
   *
   */
  set Test(value) { }
}
// Options: [{"checkSetters":false}]

`require-example`

Requires that all functions have examples.

All functions must have one or more @example tags.
Every example tag must have a non-empty description that explains the method's usage.

Options

This rule has an object option.

`exemptedBy`

Array of tags (e.g., ['type']) whose presence on the document block avoids the need for an @example. Defaults to an array with inheritdoc. If you set this array, it will overwrite the default, so be sure to add back inheritdoc if you wish its presence to cause exemption of the rule.

`exemptNoArguments`

Boolean to indicate that no-argument functions should not be reported for missing @example declarations.

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied (e.g., ClassDeclaration for ES6 classes). Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files.

See the "AST and Selectors" section of our README for more on the expected format.

`checkConstructors`

A value indicating whether constructors should be checked. Defaults to true.

`checkGetters`

A value indicating whether getters should be checked. Defaults to false.

`checkSetters`

A value indicating whether setters should be checked. Defaults to false.

Fixer

The fixer for require-example will add an empty @example, but it will still report a missing example description after this is added.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`example`
Recommended	false
Options	`exemptedBy`, `exemptNoArguments`, `avoidExampleOnConstructors`, `contexts`
Settings	`overrideReplacesDocs`, `augmentsExtendsReplacesDocs`, `implementsReplacesDocs`

The following patterns are considered problems:

/**
 *
 */
function quux () {

}
// Message: Missing JSDoc @example declaration.

/**
 *
 */
function quux (someParam) {

}
// Options: [{"exemptNoArguments":true}]
// Message: Missing JSDoc @example declaration.

/**
 *
 */
function quux () {

}
// Message: Missing JSDoc @example declaration.

/**
 * @example
 */
function quux () {

}
// Message: Missing JSDoc @example description.

/**
 * @constructor
 */
function quux () {

}
// Message: Missing JSDoc @example declaration.

/**
 * @constructor
 * @example
 */
function quux () {

}
// Message: Missing JSDoc @example description.

/**
 *
 */
class quux {

}
// Options: [{"contexts":["ClassDeclaration"]}]
// Message: Missing JSDoc @example declaration.

/**
 *
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @example declaration.

/**
 *
 */
function quux () {
}
// Options: [{"exemptedBy":["notPresent"]}]
// Message: Missing JSDoc @example declaration.

class TestClass {
  /**
   *
   */
  get Test() { }
}
// Options: [{"checkGetters":true}]
// Message: Missing JSDoc @example declaration.

class TestClass {
  /**
   * @example
   */
  get Test() { }
}
// Options: [{"checkGetters":true}]
// Message: Missing JSDoc @example description.

class TestClass {
  /**
   *
   */
  set Test(value) { }
}
// Options: [{"checkSetters":true}]
// Message: Missing JSDoc @example declaration.

class TestClass {
  /**
   * @example
   */
  set Test(value) { }
}
// Options: [{"checkSetters":true}]
// Message: Missing JSDoc @example description.

The following patterns are not considered problems:

/**
 *
 */

/**
 * @example
 * // arbitrary example content
 */
function quux () {

}

/**
 * @example
 * quux(); // does something useful
 */
function quux () {

}

/**
 * @example <caption>Valid usage</caption>
 * quux(); // does something useful
 *
 * @example <caption>Invalid usage</caption>
 * quux('random unwanted arg'); // results in an error
 */
function quux () {

}

/**
 * @constructor
 */
function quux () {

}
// Options: [{"checkConstructors":false}]

/**
 * @constructor
 * @example
 */
function quux () {

}
// Options: [{"checkConstructors":false}]

class Foo {
  /**
   *
   */
  constructor () {

  }
}
// Options: [{"checkConstructors":false}]

/**
 * @inheritdoc
 */
function quux () {

}

/**
 * @type {MyCallback}
 */
function quux () {

}
// Options: [{"exemptedBy":["type"]}]

/**
 * @example Some example code
 */
class quux {

}
// Options: [{"contexts":["ClassDeclaration"]}]

/**
 *
 */
function quux () {

}
// Options: [{"contexts":["ClassDeclaration"]}]

class TestClass {
  /**
   *
   */
  get Test() { }
}

class TestClass {
  /**
   * @example
   */
  get Test() { }
}

class TestClass {
  /**
   * @example Test
   */
  get Test() { }
}
// Options: [{"checkGetters":true}]

class TestClass {
  /**
   *
   */
  set Test(value) { }
}

class TestClass {
  /**
   * @example
   */
  set Test(value) { }
}
// Options: [{"checkSetters":false}]

class TestClass {
  /**
   * @example Test
   */
  set Test(value) { }
}
// Options: [{"checkSetters":true}]

/**
 *
 */
function quux () {

}
// Options: [{"exemptNoArguments":true}]

`require-file-overview`

Checks that:

All files have a @file, @fileoverview, or @overview tag.
Duplicate file overview tags within a given file will be reported
File overview tags will be reported which are not, as per the docs, "at the beginning of the file"–where beginning of the file is interpreted in this rule as being when the overview tag is not preceded by anything other than a comment.

Options

`tags`

The keys of this object are tag names, and the values are configuration objects indicating what will be checked for these whole-file tags.

Each configuration object has the following boolean keys (which default to false when this option is supplied): mustExist, preventDuplicates, initialCommentsOnly. These correspond to the three items above.

When no tags is present, the default is:

{
  "file": {
    "initialCommentsOnly": true,
    "mustExist": true,
    "preventDuplicates": true,
  }
}

You can add additional tag names and/or override file if you supply this option, e.g., in place of or in addition to file, giving other potential file global tags like @license, @copyright, @author, @module or @exports, optionally restricting them to a single use or preventing them from being preceded by anything besides comments.

For example:

{
  "license": {
    "mustExist": true,
    "preventDuplicates": true,
  }
}

This would require one and only one @license in the file, though because initialCommentsOnly is absent and defaults to false, the @license can be anywhere.

In the case of @license, you can use this rule along with the check-values rule (with its allowedLicenses or licensePattern options), to enforce a license whitelist be present on every JS file.

Note that if you choose to use preventDuplicates with license, you still have a way to allow multiple licenses for the whole page by using the SPDX "AND" expression, e.g., @license (MIT AND GPL-3.0).

Note that the tag names are the main jsdoc tag name, so you should use file in this configuration object regardless of whether you have configured fileoverview instead of file on tagNamePreference (i.e., fileoverview will be checked, but you must use file on the configuration object).


Context	Everywhere
Tags	`file`; others when `tags` set
Aliases	`fileoverview`, `overview`
Recommended	false
Options	`tags`

The following patterns are considered problems:

// Message: Missing @file


// Options: [{"tags":{"file":{"initialCommentsOnly":true,"mustExist":true,"preventDuplicates":true}}}]
// Message: Missing @file


// Options: [{"tags":{"file":{"mustExist":true}}}]
// Message: Missing @file


// Options: [{"tags":{"author":{"initialCommentsOnly":false,"mustExist":true,"preventDuplicates":false}}}]
// Message: Missing @author

/**
 *
 */
// Message: Missing @file

/**
 *
 */
function quux () {}
// Message: Missing @file

/**
 *
 */
function quux () {}
// Settings: {"jsdoc":{"tagNamePreference":{"file":"fileoverview"}}}
// Message: Missing @fileoverview

/**
 *
 */
function quux () {}
// Settings: {"jsdoc":{"tagNamePreference":{"file":"overview"}}}
// Message: Missing @overview

/**
 *
 */
function quux () {}
// Settings: {"jsdoc":{"tagNamePreference":{"file":false}}}
// Message: `settings.jsdoc.tagNamePreference` cannot block @file for the `require-file-overview` rule

/**
 *
 */
function quux () {}
// Settings: {"jsdoc":{"tagNamePreference":{"file":false}}}
// Options: [{"tags":{"file":{"initialCommentsOnly":false,"mustExist":true,"preventDuplicates":false}}}]
// Message: `settings.jsdoc.tagNamePreference` cannot block @file for the `require-file-overview` rule

/**
 *
 */
function quux () {}
// Settings: {"jsdoc":{"tagNamePreference":{"file":{"message":"Don't use file"}}}}
// Message: `settings.jsdoc.tagNamePreference` cannot block @file for the `require-file-overview` rule

/**
 * @param a
 */
function quux (a) {}
// Message: Missing @file

/**
 * @param a
 */
function quux (a) {}

/**
 * @param b
 */
function bar (b) {}
// Message: Missing @file

/**
 * @file
 */

 /**
  * @file
  */
// Message: Duplicate @file

/**
 * @copyright
 */

 /**
  * @copyright
  */
// Options: [{"tags":{"copyright":{"initialCommentsOnly":false,"mustExist":false,"preventDuplicates":true}}}]
// Message: Duplicate @copyright

function quux () {
}
/**
 * @file
 */
// Message: @file should be at the beginning of the file

function quux () {
}
/**
 * @license
 */
// Options: [{"tags":{"license":{"initialCommentsOnly":true,"mustExist":false,"preventDuplicates":false}}}]
// Message: @license should be at the beginning of the file

function quux () {
}
/**
 * @license
 */
// Options: [{"tags":{"license":{"initialCommentsOnly":true}}}]
// Message: @license should be at the beginning of the file

/**
 * @file
 */

/**
 * @file
 */
// Options: [{"tags":{"file":{"initialCommentsOnly":true,"preventDuplicates":true}}}]
// Message: Duplicate @file

The following patterns are not considered problems:

/**
 * @file
 */

/**
 * @file
 */

/**
 * @file
 */
// Options: [{"tags":{"license":{"initialCommentsOnly":true,"preventDuplicates":true}}}]

// Ok preceded by comment
/**
 * @file
 */

/**
 * @fileoverview
 */
// Settings: {"jsdoc":{"tagNamePreference":{"file":"fileoverview"}}}

/**
 * @overview
 */
// Settings: {"jsdoc":{"tagNamePreference":{"file":"overview"}}}

/**
 * @file Description of file
 */

/**
 * @file Description of file
 */
function quux () {
}

/**
 *
 */

function quux () {
}
/**
 *
 */
// Options: [{"tags":{"license":{"initialCommentsOnly":true,"mustExist":false,"preventDuplicates":false}}}]

function quux () {
}
/**
 *
 */
// Options: [{"tags":{"license":{"initialCommentsOnly":false,"mustExist":false,"preventDuplicates":false}}}]

function quux () {
}
/**
 *
 */
// Options: [{"tags":{"license":{"initialCommentsOnly":false,"mustExist":false,"preventDuplicates":true}}}]

/**
 * @license MIT
 */

 var a

 /**
  * @type {Array}
  */
// Options: [{"tags":{"license":{"initialCommentsOnly":true,"mustExist":false,"preventDuplicates":false}}}]

`require-hyphen-before-param-description`

Requires (or disallows) a hyphen before the @param description.

Options

This rule takes one optional string argument and an optional options object.

If the string is "always" then a problem is raised when there is no hyphen before the description. If it is "never" then a problem is raised when there is a hyphen before the description. The default value is "always".

The options object may have the following properties to indicate behavior for other tags besides the @param tag (or the @arg tag if so set):

tags - Object whose keys indicate different tags to check for the presence or absence of hyphens; the key value should be "always" or "never", indicating how hyphens are to be applied, e.g., {property: 'never'} to ensure @property never uses hyphens. A key can also be set as *, e.g., '*': 'always' to apply hyphen checking to any tag (besides the preferred @param tag which follows the main string option setting and besides any other tags entries).


Context	everywhere
Tags	`param` and optionally other tags within `tags`
Aliases	`arg`, `argument`; potentially `prop` or other aliases
Recommended	false
Options	(a string matching `"always"

The following patterns are considered problems:

/**
 * @param foo Foo.
 */
function quux () {

}
// Options: ["always"]
// Message: There must be a hyphen before @param description.

/**
 * @param foo Foo.
 */
function quux () {

}
// Options: ["always",{"tags":{"*":"never"}}]
// Message: There must be a hyphen before @param description.

/**
 * @param foo Foo.
 * @returns {SomeType} - Hyphen here.
 */
function quux () {

}
// Options: ["always",{"tags":{"*":"never","returns":"always"}}]
// Message: There must be a hyphen before @param description.

/**
 * @param foo Foo.
 */
function quux () {

}
// Message: There must be a hyphen before @param description.

/**
 * @param foo - Foo.
 */
function quux () {

}
// Options: ["never"]
// Message: There must be no hyphen before @param description.

/**
 * @param foo    - Foo.
 */
function quux () {

}
// Options: ["never"]
// Message: There must be no hyphen before @param description.

/**
 * @param foo - foo
 * @param foo foo
 */
function quux () {

}
// Options: ["always"]
// Message: There must be a hyphen before @param description.

/**
 * @param foo foo
 * bar
 * @param bar - bar
 */
function quux () {

}
// Options: ["always"]
// Message: There must be a hyphen before @param description.

/**
 * @param foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":false}}}
// Message: Unexpected tag `@param`

/**
 * @typedef {SomeType} ATypeDefName
 * @property foo Foo.
 */
// Options: ["always",{"tags":{"property":"always"}}]
// Message: There must be a hyphen before @property description.

/**
 * @template TempA, TempB A desc.
 */
// Options: ["always",{"tags":{"template":"always"}}]
// Message: There must be a hyphen before @template description.

/**
 * @typedef {SomeType} ATypeDefName
 * @property foo - Foo.
 */
// Options: ["never",{"tags":{"property":"never"}}]
// Message: There must be no hyphen before @property description.

/**
 * @param foo Foo.
 * @returns {SomeType} - A description.
 */
function quux () {

}
// Options: ["always",{"tags":{"returns":"never"}}]
// Message: There must be a hyphen before @param description.

The following patterns are not considered problems:

/**
 * @param foo - Foo.
 */
function quux () {

}
// Options: ["always"]

/**
 * @param foo     - Foo.
 */
function quux () {

}
// Options: ["always"]

/**
 * @param foo - Foo.
 * @returns {SomeType} A description.
 */
function quux () {

}
// Options: ["always",{"tags":{"returns":"never"}}]

/**
 * @param foo Foo.
 */
function quux () {

}
// Options: ["never"]

/**
 * @param foo
 */
function quux () {

}

/**
 *
 */
function quux () {

}
// Options: ["always",{"tags":{"*":"always"}}]

/**
 * @typedef {SomeType} ATypeDefName
 * @property foo - Foo.
 */
// Options: ["always",{"tags":{"property":"always"}}]

/**
 * @typedef {SomeType} ATypeDefName
 * @property foo Foo.
 */
// Options: ["never",{"tags":{"property":"never"}}]

/**
 * @typedef {SomeType} ATypeDefName
 * @property foo - Foo.
 */
// Options: ["never",{"tags":{"*":"always"}}]

/** Entry point for module.
 *
 * @param {!Array<string>} argv Command-line arguments.
 */
function main(argv) {
};
// Options: ["never"]

`require-jsdoc`

Checks for presence of jsdoc comments, on class declarations as well as functions.

Options

Accepts one optional options object with the following optional keys.

`publicOnly`

This option will insist that missing jsdoc blocks are only reported for function bodies / class declarations that are exported from the module. May be a boolean or object. If set to true, the defaults below will be used. If unset, jsdoc block reporting will not be limited to exports.

This object supports the following optional boolean keys (false unless otherwise noted):

ancestorsOnly - Only check node ancestors to check if node is exported
esm - ESM exports are checked for JSDoc comments (Defaults to true)
cjs - CommonJS exports are checked for JSDoc comments (Defaults to true)
window - Window global exports are checked for JSDoc comments

`require`

An object with the following optional boolean keys which all default to false except as noted, indicating the contexts where the rule will apply:

ArrowFunctionExpression
ClassDeclaration
ClassExpression
FunctionDeclaration (defaults to true)
FunctionExpression
MethodDefinition

`contexts`

Set this to an array of strings or objects representing the additional AST contexts where you wish the rule to be applied (e.g., Property for properties). If specified as an object, it should have a context property and can have an inlineCommentBlock property which, if set to true, will add an inline /** */ instead of the regular, multi-line, indented jsdoc block which will otherwise be added. Defaults to an empty array.

Note that you may need to disable require items (e.g., MethodDefinition) if you are specifying a more precise form in contexts (e.g., MethodDefinition:not([accessibility="private"])).

See the "AST and Selectors" section of our README for more on the expected format.

`exemptEmptyConstructors`

Default: true

When true, the rule will not report missing jsdoc blocks above constructors with no parameters or return values (this is enabled by default as the class name or description should be seen as sufficient to convey intent).

`exemptEmptyFunctions`

Default: false.

When true, the rule will not report missing jsdoc blocks above functions/methods with no parameters or return values (intended where function/method names are sufficient for themselves as documentation).

`checkConstructors`

A value indicating whether constructors should be checked. Defaults to true. When true, exemptEmptyConstructors may still avoid reporting when no parameters or return values are found.

`checkGetters`

A value indicating whether getters should be checked. Defaults to false.

`checkSetters`

A value indicating whether setters should be checked. Defaults to false.

`enableFixer`

A boolean on whether to enable the fixer (which adds an empty jsdoc block). Defaults to true.


Context	`ArrowFunctionExpression`, `ClassDeclaration`, `ClassExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	N/A
Recommended	true
Options	`publicOnly`, `require`, `contexts`, `exemptEmptyConstructors`, `exemptEmptyFunctions`, `enableFixer`

The following patterns are considered problems:

/** This is comment */
export interface Foo {
  bar(): string;
}
// Options: [{"contexts":["TSInterfaceDeclaration","TSMethodSignature","TSPropertySignature"],"publicOnly":{"ancestorsOnly":true}}]
// Message: Missing JSDoc comment.

/** This is comment */
export interface Foo {
  bar: string;
}
// Options: [{"contexts":["TSInterfaceDeclaration","TSMethodSignature","TSPropertySignature"],"publicOnly":{"ancestorsOnly":true,"esm":true}}]
// Message: Missing JSDoc comment.

/**
 * Foo interface documentation.
 */
export interface Foo extends Bar {
  /**
   * baz method documentation.
   */
  baz(): void;

  meow(): void;
}
// Options: [{"contexts":["TSMethodSignature"],"publicOnly":{"ancestorsOnly":true}}]
// Message: Missing JSDoc comment.

function quux (foo) {

}
// Message: Missing JSDoc comment.

/**
 * @func myFunction
 */
function myFunction() {

}
// Settings: {"jsdoc":{"maxLines":3,"minLines":2}}
// Message: Missing JSDoc comment.

/**
 * @func myFunction
 */


function myFunction() {

}
// Settings: {"jsdoc":{"maxLines":2}}
// Message: Missing JSDoc comment.

/** @func myFunction */ function myFunction() {

}
// Settings: {"jsdoc":{"minLines":1}}
// Message: Missing JSDoc comment.

function myFunction() {

}
// Options: [{"enableFixer":false}]
// Message: Missing JSDoc comment.

export var test = function () {

};
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

function test () {

}
export var test2 = test;
// Options: [{"publicOnly":true,"require":{"FunctionDeclaration":true}}]
// Message: Missing JSDoc comment.

export const test = () => {

};
// Options: [{"publicOnly":true,"require":{"ArrowFunctionExpression":true}}]
// Message: Missing JSDoc comment.

export const test = () => {

};
// Options: [{"contexts":["ArrowFunctionExpression"],"publicOnly":true}]
// Message: Missing JSDoc comment.

export const test = () => {

};
// Options: [{"contexts":[{"context":"ArrowFunctionExpression"}],"publicOnly":true}]
// Message: Missing JSDoc comment.

export let test = class {

};
// Options: [{"publicOnly":true,"require":{"ClassExpression":true}}]
// Message: Missing JSDoc comment.

export default function () {}
// Options: [{"publicOnly":{"cjs":false,"esm":true,"window":false},"require":{"FunctionDeclaration":true}}]
// Message: Missing JSDoc comment.

export default () => {}
// Options: [{"publicOnly":{"cjs":false,"esm":true,"window":false},"require":{"ArrowFunctionExpression":true}}]
// Message: Missing JSDoc comment.

export default (function () {})
// Options: [{"publicOnly":{"cjs":false,"esm":true,"window":false},"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

export default class {}
// Options: [{"publicOnly":{"cjs":false,"esm":true,"window":false},"require":{"ClassDeclaration":true}}]
// Message: Missing JSDoc comment.

function quux (foo) {

}
// Message: Missing JSDoc comment.

function quux (foo) {

}
// Options: [{"exemptEmptyFunctions":true}]
// Message: Missing JSDoc comment.

function quux (foo) {

}
// Settings: {"jsdoc":{"minLines":2}}
// Options: [{"exemptEmptyFunctions":true}]
// Message: Missing JSDoc comment.

function myFunction() {}
// Message: Missing JSDoc comment.

/**
 * Description for A.
 */
class A {
   constructor(xs) {
        this.a = xs;
   }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

class A {
    /**
     * Description for constructor.
     * @param {object[]} xs - xs
     */
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

class A extends B {
    /**
     * Description for constructor.
     * @param {object[]} xs - xs
     */
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

export class A extends B {
    /**
     * Description for constructor.
     * @param {object[]} xs - xs
     */
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

export default class A extends B {
    /**
     * Description for constructor.
     * @param {object[]} xs - xs
     */
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

var myFunction = () => {}
// Options: [{"require":{"ArrowFunctionExpression":true}}]
// Message: Missing JSDoc comment.

var myFunction = () => () => {}
// Options: [{"require":{"ArrowFunctionExpression":true}}]
// Message: Missing JSDoc comment.

var foo = function() {}
// Options: [{"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

const foo = {bar() {}}
// Options: [{"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

var foo = {bar: function() {}}
// Options: [{"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

function foo (abc) {}
// Options: [{"exemptEmptyFunctions":false}]
// Message: Missing JSDoc comment.

function foo () {
  return true;
}
// Options: [{"exemptEmptyFunctions":false}]
// Message: Missing JSDoc comment.

module.exports = function quux () {

}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

module.exports = function quux () {

}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

module.exports = {
  method: function() {

  }
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

module.exports = {
  test: {
    test2: function() {

    }
  }
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

module.exports = {
  test: {
    test2: function() {

    }
  }
}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

const test = module.exports = function () {

}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

/**
*
*/
const test = module.exports = function () {

}

test.prototype.method = function() {}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

const test = function () {

}
module.exports = {
  test: test
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

const test = () => {

}
module.exports = {
  test: test
}
// Options: [{"publicOnly":true,"require":{"ArrowFunctionExpression":true}}]
// Message: Missing JSDoc comment.

class Test {
    method() {

    }
}
module.exports = Test;
// Options: [{"publicOnly":true,"require":{"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

export default function quux () {

}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

export default function quux () {

}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

function quux () {

}
export default quux;
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

export function test() {

}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

export function test() {

}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

var test = function () {

}
var test2 = 2;
export { test, test2 }
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

var test = function () {

}
export { test as test2 }
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

export default class A {

}
// Options: [{"publicOnly":true,"require":{"ClassDeclaration":true}}]
// Message: Missing JSDoc comment.

export default class A {

}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"ClassDeclaration":true}}]
// Message: Missing JSDoc comment.

var test = function () {

}
// Options: [{"publicOnly":{"window":true},"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

window.test = function () {

}
// Options: [{"publicOnly":{"window":true},"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

function test () {

}
// Options: [{"publicOnly":{"window":true}}]
// Message: Missing JSDoc comment.

module.exports = function() {

}
// Options: [{"publicOnly":{"cjs":true,"esm":false,"window":false},"require":{"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

export function someMethod() {

}
// Options: [{"publicOnly":{"cjs":false,"esm":true,"window":false},"require":{"FunctionDeclaration":true}}]
// Message: Missing JSDoc comment.

export function someMethod() {

}
// Options: [{"publicOnly":{"cjs":false,"esm":true,"window":false},"require":{"FunctionDeclaration":true}}]
// Message: Missing JSDoc comment.

const myObject = {
  myProp: true
};
// Options: [{"contexts":["Property"]}]
// Message: Missing JSDoc comment.

/**
 * Foo interface documentation.
 */
export interface Foo extends Bar {
  /**
   * baz method documentation.
   */
  baz(): void;

  meow(): void;
}
// Options: [{"contexts":["TSMethodSignature"]}]
// Message: Missing JSDoc comment.

class MyClass {
  someProperty: boolean; // Flow type annotation.
}
// Options: [{"exemptEmptyFunctions":true,"require":{"ClassDeclaration":true}}]
// Message: Missing JSDoc comment.

export default class Test {
  constructor(a) {
    this.a = a;
  }
}
// Options: [{"publicOnly":true,"require":{"ArrowFunctionExpression":false,"ClassDeclaration":false,"ClassExpression":false,"FunctionDeclaration":false,"FunctionExpression":false,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

export default class Test {
  constructor(a) {
    this.a = a;
  }
  private abc(a) {
    this.a = a;
  }
}
// Options: [{"contexts":["MethodDefinition:not([accessibility=\"private\"]) > FunctionExpression"],"publicOnly":true,"require":{"ArrowFunctionExpression":false,"ClassDeclaration":false,"ClassExpression":false,"FunctionDeclaration":false,"FunctionExpression":false,"MethodDefinition":false}}]
// Message: Missing JSDoc comment.

e = function () {
};
// Options: [{"require":{"FunctionDeclaration":false,"FunctionExpression":true}}]
// Message: Missing JSDoc comment.

/**
 *
 */
export class Class {
    test = 1;

    foo() {
        this.test = 2;
    }
}
// Options: [{"require":{"FunctionDeclaration":false,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

class Dog {
  eat() {

  }
}
// Options: [{"require":{"FunctionDeclaration":false,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

const hello = name => {
  document.body.textContent = "Hello, " + name + "!";
};
// Options: [{"require":{"ArrowFunctionExpression":true,"FunctionDeclaration":false}}]
// Message: Missing JSDoc comment.

export const loginSuccessAction = (): BaseActionPayload => ({ type: LOGIN_SUCCESSFUL });
// Options: [{"require":{"ArrowFunctionExpression":true,"FunctionDeclaration":false}}]
// Message: Missing JSDoc comment.

export type Container = {
  constants?: ObjByString;
  enums?: { [key in string]: TypescriptEnum };
  helpers?: { [key in string]: AnyFunction };
};
// Options: [{"contexts":["TSTypeAliasDeclaration",{"context":"TSPropertySignature","inlineCommentBlock":true}]}]
// Message: Missing JSDoc comment.

class Foo {
    constructor() {}

    bar() {}
}
// Options: [{"contexts":["MethodDefinition[key.name!=\"constructor\"]"],"require":{"ClassDeclaration":true}}]
// Message: Missing JSDoc comment.

class Example extends React.PureComponent {
  componentDidMount() {}

  render() {}

  someOtherMethod () {}
}
// Options: [{"contexts":["MethodDefinition:not([key.name=\"componentDidMount\"]):not([key.name=\"render\"])"],"require":{"ClassDeclaration":true}}]
// Message: Missing JSDoc comment.

function foo(arg: boolean): boolean {
  return arg;
}

function bar(arg: true): true;
function bar(arg: false): false;
function bar(arg: boolean): boolean {
  return arg;
}
// Options: [{"contexts":["TSDeclareFunction:not(TSDeclareFunction + TSDeclareFunction)","FunctionDeclaration:not(TSDeclareFunction + FunctionDeclaration)"],"require":{"FunctionDeclaration":false}}]
// Message: Missing JSDoc comment.

export function foo(arg: boolean): boolean {
  return arg;
}

export function bar(arg: true): true;
export function bar(arg: false): false;
export function bar(arg: boolean): boolean {
  return arg;
}
// Options: [{"contexts":["ExportNamedDeclaration[declaration.type=\"TSDeclareFunction\"]:not(ExportNamedDeclaration[declaration.type=\"TSDeclareFunction\"] + ExportNamedDeclaration[declaration.type=\"TSDeclareFunction\"])","ExportNamedDeclaration[declaration.type=\"FunctionDeclaration\"]:not(ExportNamedDeclaration[declaration.type=\"TSDeclareFunction\"] + ExportNamedDeclaration[declaration.type=\"FunctionDeclaration\"])"],"require":{"FunctionDeclaration":false}}]
// Message: Missing JSDoc comment.

module.exports.foo = (bar) => {
  return bar + "biz"
}
// Options: [{"publicOnly":false,"require":{"ArrowFunctionExpression":true,"FunctionDeclaration":true,"FunctionExpression":true,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

class Animal {

  #name: string;

  private species: string;

  public color: string;

  @SomeAnnotation('optionalParameter')
  tail: boolean;
}
// Options: [{"contexts":["ClassProperty"]}]
// Message: Missing JSDoc comment.

@Entity('users')
export class User {}
// Options: [{"require":{"ClassDeclaration":true}}]
// Message: Missing JSDoc comment.

/**
 *
 */
class Foo {
    constructor() {}
}
// Options: [{"exemptEmptyConstructors":false,"require":{"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

/**
 *
 */
class Foo {
    constructor(notEmpty) {}
}
// Options: [{"exemptEmptyConstructors":true,"require":{"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

/**
 *
 */
class Foo {
    constructor() {
        const notEmpty = true;
        return notEmpty;
    }
}
// Options: [{"exemptEmptyConstructors":true,"require":{"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

/**
 *
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"name":false,"required":["name"]}}}}
// Message: Cannot add "name" to `require` with the tag's `name` set to `false`

class Test {
  aFunc() {}
}
// Options: [{"checkConstructors":false,"require":{"ArrowFunctionExpression":true,"ClassDeclaration":false,"ClassExpression":true,"FunctionDeclaration":true,"FunctionExpression":true,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

class Test {
  aFunc = () => {}
  anotherFunc() {}
}
// Options: [{"require":{"ArrowFunctionExpression":true,"ClassDeclaration":false,"ClassExpression":true,"FunctionDeclaration":true,"FunctionExpression":true,"MethodDefinition":true}}]
// Message: Missing JSDoc comment.

export enum testEnum {
  A, B
}
// Options: [{"contexts":["TSEnumDeclaration"],"publicOnly":true}]
// Message: Missing JSDoc comment.

export interface Test {
  aFunc: () => void;
  aVar: string;
}
// Options: [{"contexts":["TSInterfaceDeclaration"],"publicOnly":true}]
// Message: Missing JSDoc comment.

export type testType = string | number;
// Options: [{"contexts":["TSTypeAliasDeclaration"],"publicOnly":true}]
// Message: Missing JSDoc comment.

export interface Foo {
    bar: number;
    baz: string;
    quux(): void;
}
// Options: [{"contexts":["TSPropertySignature","TSMethodSignature"],"publicOnly":true}]
// Message: Missing JSDoc comment.

export class MyComponentComponent {
  @Output()
  public changed = new EventEmitter();

  public test = 'test';

  @Input()
  public value = new EventEmitter();
}
// Options: [{"contexts":["ClassProperty > Decorator[expression.callee.name=\"Input\"]"]}]
// Message: Missing JSDoc comment.

The following patterns are not considered problems:

/**
 *
 */

var array = [1,2,3];
array.forEach(function() {});

/**
 * @class MyClass
 **/
function MyClass() {}

/**
 Function doing something
 */
function myFunction() {}
/**
 Function doing something
 */
var myFunction = function() {};
/**
 Function doing something
 */
Object.myFunction = function () {};
var obj = {
   /**
    *  Function doing something
    **/
    myFunction: function () {} };

/**
 @func myFunction
 */
function myFunction() {}
/**
 @method myFunction
 */
function myFunction() {}
/**
 @function myFunction
 */
function myFunction() {}

/**
 @func myFunction
 */
var myFunction = function () {}
/**
 @method myFunction
 */
var myFunction = function () {}
/**
 @function myFunction
 */
var myFunction = function () {}

/**
 @func myFunction
 */
Object.myFunction = function() {}
/**
 @method myFunction
 */
Object.myFunction = function() {}
/**
 @function myFunction
 */
Object.myFunction = function() {}
(function(){})();

var object = {
  /**
   *  @func myFunction - Some function
   */
  myFunction: function() {} }
var object = {
  /**
   *  @method myFunction - Some function
   */
  myFunction: function() {} }
var object = {
  /**
   *  @function myFunction - Some function
   */
  myFunction: function() {} }

var array = [1,2,3];
array.filter(function() {});
Object.keys(this.options.rules || {}).forEach(function(name) {}.bind(this));
var object = { name: 'key'};
Object.keys(object).forEach(function() {})

/**
 * @func myFunction
 */

function myFunction() {

}
// Settings: {"jsdoc":{"maxLines":2,"minLines":0}}

/**
 * @func myFunction
 */


function myFunction() {

}
// Settings: {"jsdoc":{"maxLines":3,"minLines":0}}

/** @func myFunction */  function myFunction() {

}
// Settings: {"jsdoc":{"maxLines":0,"minLines":0}}

/**
 * @func myFunction
 */

function myFunction() {

}
// Settings: {"jsdoc":{"maxLines":3,"minLines":2}}

function myFunction() {}
// Options: [{"require":{"ClassDeclaration":true,"FunctionDeclaration":false,"MethodDefinition":true}}]

var myFunction = function() {}
// Options: [{"require":{"ClassDeclaration":true,"FunctionDeclaration":false,"MethodDefinition":true}}]

/**
 * Description for A.
 */
class A {
    /**
     * Description for constructor.
     * @param {object[]} xs - xs
     */
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]

/**
 * Description for A.
 */
class App extends Component {
    /**
     * Description for constructor.
     * @param {object[]} xs - xs
     */
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]

/**
 * Description for A.
 */
export default class App extends Component {
    /**
     * Description for constructor.
     * @param {object[]} xs - xs
     */
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]

/**
 * Description for A.
 */
export class App extends Component {
    /**
     * Description for constructor.
     * @param {object[]} xs - xs
     */
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":true,"MethodDefinition":true}}]

class A {
    constructor(xs) {
        this.a = xs;
    }
}
// Options: [{"require":{"ClassDeclaration":false,"MethodDefinition":false}}]

/**
* Function doing something
*/
var myFunction = () => {}
// Options: [{"require":{"ArrowFunctionExpression":true}}]

/**
* Function doing something
*/
var myFunction = function () {}
// Options: [{"require":{"ArrowFunctionExpression":true}}]

/**
* Function doing something
*/
var myFunction = () => {}
// Options: [{"require":{"ArrowFunctionExpression":false}}]

/**
 Function doing something
*/
var myFunction = () => () => {}
// Options: [{"require":{"ArrowFunctionExpression":true}}]

setTimeout(() => {}, 10);
// Options: [{"require":{"ArrowFunctionExpression":true}}]

/**
JSDoc Block
*/
var foo = function() {}
// Options: [{"require":{"FunctionExpression":true}}]

const foo = {/**
JSDoc Block
*/
bar() {}}
// Options: [{"require":{"FunctionExpression":true}}]

var foo = {/**
JSDoc Block
*/
bar: function() {}}
// Options: [{"require":{"FunctionExpression":true}}]

var foo = { [function() {}]: 1 };
// Options: [{"require":{"FunctionExpression":true}}]

function foo () {}
// Options: [{"exemptEmptyFunctions":true}]

function foo () {
  return;
}
// Options: [{"exemptEmptyFunctions":true}]

const test = {};
/**
 * test
 */
 test.method = function () {

}
module.exports = {
  prop: { prop2: test.method }
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

/**
 *
 */
function test() {

}

module.exports = {
  prop: { prop2: test }
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

/**
 *
 */
test = function() {

}

module.exports = {
  prop: { prop2: test }
}
// Options: [{"publicOnly":{"cjs":true,"esm":false,"window":false},"require":{"FunctionExpression":true}}]

/**
 *
 */
test = function() {

}

exports.someMethod = {
  prop: { prop2: test }
}
// Options: [{"publicOnly":{"cjs":false,"esm":true,"window":false},"require":{"FunctionExpression":true}}]

/**
 *
 */
const test = () => {

}

module.exports = {
prop: { prop2: test }
}
// Options: [{"publicOnly":true,"require":{"ArrowFunctionExpression":true}}]

const test = () => {

}
module.exports = {
  prop: { prop2: test }
}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"ArrowFunctionExpression":true}}]

/**
 *
 */
window.test = function() {

}

module.exports = {
prop: window
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

test = function() {

}

/**
 *
 */
test = function() {

}

module.exports = {
prop: { prop2: test }
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

test = function() {

}

test = 2;

module.exports = {
prop: { prop2: test }
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

/**
 *
 */
function test() {

}

/**
 *
 */
test.prototype.method = function() {

}

module.exports = {
prop: { prop2: test }
}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

class Test {
  /**
   * Test
   */
  method() {

  }
}
module.exports = Test;
// Options: [{"publicOnly":true,"require":{"MethodDefinition":true}}]

/**
 *
 */
export default function quux () {

}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

/**
 *
 */
export default function quux () {

}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"FunctionExpression":true}}]

/**
 *
 */
function quux () {

}
export default quux;
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

function quux () {

}
export default quux;
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"FunctionExpression":true}}]

/**
 *
 */
export function test() {

}
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

/**
 *
 */
export function test() {

}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"FunctionExpression":true}}]

/**
 *
 */
var test = function () {

}
var test2 = 2;
export { test, test2 }
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

/**
 *
 */
var test = function () {

}
export { test as test2 }
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

/**
 *
 */
export default class A {

}
// Options: [{"publicOnly":{"ancestorsOnly":true},"require":{"ClassDeclaration":true}}]

/**
 *
 */
var test = function () {

}
// Options: [{"publicOnly":{"window":true},"require":{"FunctionExpression":true}}]

let test = function () {

}
// Options: [{"publicOnly":{"window":true},"require":{"FunctionExpression":true}}]

let test = class {

}
// Options: [{"publicOnly":true,"require":{"ClassExpression":false}}]

/**
 *
 */
let test = class {

}
// Options: [{"publicOnly":true,"require":{"ClassExpression":true}}]

export function someMethod() {

}
// Options: [{"publicOnly":{"cjs":true,"esm":false,"window":false},"require":{"FunctionDeclaration":true}}]

export function someMethod() {

}
// Options: [{"publicOnly":{"cjs":true,"esm":false,"window":false},"require":{"FunctionDeclaration":true}}]

exports.someMethod = function() {

}
// Options: [{"publicOnly":{"cjs":false,"esm":true,"window":false},"require":{"FunctionExpression":true}}]

const myObject = {
  myProp: true
};
// Options: [{"contexts":[]}]

function bear() {}
/**
 *
 */
function quux () {
}
export default quux;
// Options: [{"publicOnly":true,"require":{"FunctionExpression":true}}]

/**
 * This example interface is great!
 */
export interface Example {
  /**
   * My super test string!
   */
  test: string
}
// Options: [{"contexts":["TSInterfaceDeclaration"]}]

/**
 * This example interface is great!
 */
interface Example {
  /**
   * My super test string!
   */
  test: string
}
// Options: [{"contexts":["TSInterfaceDeclaration"]}]

/**
 * This example type is great!
 */
export type Example = {
  /**
   * My super test string!
   */
  test: string
};
// Options: [{"contexts":["TSTypeAliasDeclaration"]}]

/**
 * This example type is great!
 */
type Example = {
  /**
   * My super test string!
   */
  test: string
};
// Options: [{"contexts":["TSTypeAliasDeclaration"]}]

/**
 * This example enum is great!
 */
export enum Example {
  /**
   * My super test enum!
   */
  test = 123
}
// Options: [{"contexts":["TSEnumDeclaration"]}]

/**
 * This example enum is great!
 */
enum Example {
  /**
   * My super test enum!
   */
  test = 123
}
// Options: [{"contexts":["TSEnumDeclaration"]}]

const foo = {...{}};
function bar() {}
// Options: [{"exemptEmptyFunctions":false,"publicOnly":true,"require":{"ArrowFunctionExpression":true,"ClassDeclaration":true,"ClassExpression":true,"FunctionDeclaration":true,"FunctionExpression":false,"MethodDefinition":true}}]

/**
 * Class documentation
 */
 @logged
export default class Foo {
 // ....
}
// Options: [{"exemptEmptyFunctions":false,"require":{"ClassDeclaration":true}}]

const a = {};
const b = {
  ...a
};

export default b;
// Options: [{"contexts":["ObjectExpression"],"exemptEmptyFunctions":false,"publicOnly":true}]

/**
 * Foo interface documentation.
 */
export interface Foo extends Bar {
  /**
   * baz method documentation.
   */
  baz(): void;

  /**
   * meow method documentation.
   */
  meow(): void;
}
// Options: [{"contexts":["TSMethodSignature"]}]

export default class Test {
  private abc(a) {
    this.a = a;
  }
}
// Options: [{"contexts":["MethodDefinition:not([accessibility=\"private\"]) > FunctionExpression"],"publicOnly":true,"require":{"ArrowFunctionExpression":false,"ClassDeclaration":false,"ClassExpression":false,"FunctionDeclaration":false,"FunctionExpression":false,"MethodDefinition":false}}]

/**
 * Basic application controller.
 */
@Controller()
export class AppController {
  /**
   * Returns the application information.
   *
   * @returns ...
   */
  @Get('/info')
  public getInfo(): string {
    return 'OK';
  }
}
// Options: [{"require":{"ArrowFunctionExpression":false,"ClassDeclaration":true,"ClassExpression":true,"FunctionDeclaration":true,"FunctionExpression":false,"MethodDefinition":true}}]

/**
 * Entity to represent a user in the system.
 */
@Entity('users')
export class User {
}
// Options: [{"require":{"ArrowFunctionExpression":false,"ClassDeclaration":true,"ClassExpression":true,"FunctionDeclaration":true,"FunctionExpression":false,"MethodDefinition":true}}]

/**
 * Entity to represent a user in the system.
 */
@Entity('users', getVal())
export class User {
}
// Options: [{"require":{"ArrowFunctionExpression":false,"ClassDeclaration":true,"ClassExpression":true,"FunctionDeclaration":true,"FunctionExpression":false,"MethodDefinition":true}}]

/**
 *
 */
class Foo {
    constructor() {}
}
// Options: [{"exemptEmptyConstructors":true,"require":{"MethodDefinition":true}}]

/**
 *
 */
class Foo {
    constructor() {}
}
// Options: [{"checkConstructors":false,"require":{"MethodDefinition":true}}]

class Base {
  constructor() {
  }
}
// Options: [{"contexts":["MethodDefinition"],"exemptEmptyConstructors":true}]

/**
 * This is a text.
 */
export function a(); // Reports an error
// Options: [{"contexts":["TSDeclareFunction"],"require":{"FunctionDeclaration":true}}]

/**
 * Foo
 */
export function foo(): void {
  function bar(): void {
    console.log('bar');
  }

  console.log('foo');
}
// Options: [{"publicOnly":true}]

const foo = {
  bar: () => {
    // ...
  }
}
// Options: [{"contexts":[":not(Property) > ArrowFunctionExpression"],"require":{"ArrowFunctionExpression":false,"ClassDeclaration":true,"ClassExpression":true}}]

/** Defines the current user's settings. */
@Injectable({
  providedIn: 'root',
})
@State<Partial<UserSettingsStateModel>>
({
  name: 'userSettings',
  defaults: {
    isDev: !environment.production,
  },
})
export class UserSettingsState { }
// Options: [{"require":{"ClassDeclaration":true}}]

`require-param-description`

Requires that each @param tag has a description value.

Options

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`param`
Aliases	`arg`, `argument`
Recommended	true
Options	`contexts`

The following patterns are considered problems:

/**
 * @param foo
 */
function quux (foo) {

}
// Message: Missing JSDoc @param "foo" description.

/**
 * @param foo
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @param "foo" description.

/**
 * @function
 * @param foo
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @param "foo" description.

/**
 * @callback
 * @param foo
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @param "foo" description.

/**
 * @arg foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"arg"}}}
// Message: Missing JSDoc @arg "foo" description.

/**
 * @param foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":false}}}
// Message: Unexpected tag `@param`

The following patterns are not considered problems:

/**
 *
 */
function quux (foo) {

}

/**
 * @param foo Foo.
 */
function quux (foo) {

}

/**
 * @param foo Foo.
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]

/**
 * @function
 * @param foo
 */

/**
 * @callback
 * @param foo
 */

`require-param-name`

Requires that all function parameters have names.

The @param tag requires you to specify the name of the parameter you are documenting. You can also include the parameter's type, enclosed in curly brackets, and a description of the parameter.

JSDoc

Options

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`param`
Aliases	`arg`, `argument`
Recommended	true
Options	`contexts`

The following patterns are considered problems:

/**
 * @param
 */
function quux (foo) {

}
// Message: There must be an identifier after @param type.

/**
 * @param {string}
 */
function quux (foo) {

}
// Message: There must be an identifier after @param tag.

/**
 * @param {string}
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]
// Message: There must be an identifier after @param tag.

/**
 * @function
 * @param {string}
 */
// Options: [{"contexts":["any"]}]
// Message: There must be an identifier after @param tag.

/**
 * @callback
 * @param {string}
 */
// Options: [{"contexts":["any"]}]
// Message: There must be an identifier after @param tag.

/**
 * @param foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":false}}}
// Message: Unexpected tag `@param`

The following patterns are not considered problems:

/**
 * @param foo
 */
function quux (foo) {

}

/**
 * @param foo
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]

/**
 * @param {string} foo
 */
function quux (foo) {

}

/**
 * @function
 * @param
 */

/**
 * @callback
 * @param
 */

/**
 * @param {Function} [processor=data => data] A function to run
 */
function processData(processor) {
  return processor(data)
}

/** Example with multi-line param type.
*
* @param {function(
*   number
* )} cb Callback.
*/
function example(cb) {
  cb(42);
}

`require-param-type`

Requires that each @param tag has a type value.

Options

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`param`
Aliases	`arg`, `argument`
Recommended	true
Options	`contexts`

The following patterns are considered problems:

/**
 * @param foo
 */
function quux (foo) {

}
// Message: Missing JSDoc @param "foo" type.

/**
 * @param foo
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @param "foo" type.

/**
 * @function
 * @param foo
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @param "foo" type.

/**
 * @callback
 * @param foo
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @param "foo" type.

/**
 * @arg foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"arg"}}}
// Message: Missing JSDoc @arg "foo" type.

/**
 * @param foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":false}}}
// Message: Unexpected tag `@param`

The following patterns are not considered problems:

/**
 *
 */
function quux (foo) {

}

/**
 * @param {number} foo
 */
function quux (foo) {

}

/**
 * @param {number} foo
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]

/**
 * @function
 * @param foo
 */

/**
 * @callback
 * @param foo
 */

`require-param`

Requires that all function parameters are documented.

Fixer

Adds @param <name> for each tag present in the function signature but missing in the jsdoc. Can be disabled by setting the enableFixer option to false.

Destructured object and array naming

When the fixer is applied to destructured objects, only the input name is used.

So for:

/**
 * @param cfg
 */
function quux ({foo: bar, baz: bax = 5}) {
}

..the fixed jsdoc will be:

/**
* @param cfg
* @param cfg.foo
* @param cfg.baz
*/

This is because the input to the function is the relevant item for understanding the function's input, not how the variable is renamed for internal use (the signature itself documents that).

For destructured arrays, the input name is merely the array index.

So for:

/**
 * @param cfg
 */
function quux ([foo, bar]) {
}

..the fixed jsdoc will be:

/**
* @param cfg
* @param cfg.0
* @param cfg.1
*/

Missing root fixing

Note that unless enableRootFixer (or enableFixer) is set to false, missing roots will be added and auto-incremented. The default behavior is for "root" to be auto-inserted for missing roots, followed by a 0-based auto-incrementing number.

So for:

function quux ({foo}, {bar}, {baz}) {
}

...the default jsdoc that would be added if the fixer is enabled would be:

/**
* @param root0
* @param root0.foo
* @param root1
* @param root1.bar
* @param root2
* @param root2.baz
*/

The name of "root" can be configured with unnamedRootBase (which also allows cycling through a list of multiple root names before there is need for any numeric component).

And one can have the count begin at another number (e.g., 1) by changing autoIncrementBase from the default of 0.

Rest Element (`RestElement`) insertions

The fixer will automatically report/insert jsdoc repeatable parameters if missing.

/**
  * @param {GenericArray} cfg
  * @param {number} cfg.0
 */
function baar ([a, ...extra]) {
  //
}

..becomes:

/**
  * @param {GenericArray} cfg
  * @param {number} cfg.0
  * @param {...any} cfg.1
 */
function baar ([a, ...extra]) {
  //
}

Note that the type any is included since we don't know of any specific type to use.

To disable such rest element insertions, set enableRestElementFixer to false.

Note too that the following will be reported even though there is an item corresponding to extra:

/**
  * @param {GenericArray} cfg
  * @param {number} cfg.0
  * @param {any} cfg.1
 */
function baar ([a, ...extra]) {
  //
}

...because it does not use the ... syntax in the type.

Object Rest Property insertions

If the checkRestProperty option is set to true (false by default), missing rest properties will be reported with documentation auto-inserted:

/**
 * @param cfg
 * @param cfg.num
 */
function quux ({num, ...extra}) {
}

...becomes:

/**
 * @param cfg
 * @param cfg.num
 * @param cfg.extra
 */
function quux ({num, ...extra}) {
}

You may wish to manually note in your jsdoc for extra that this is a rest property, however, as jsdoc does not appear to currently support syntax or output to distinguish rest properties from other properties, so in looking at the docs alone without looking at the function signature, it may appear that there is an actual property named extra.

Options

An options object accepts the following optional properties:

`enableFixer`

Whether to enable the fixer. Defaults to true.

`enableRootFixer`

Whether to enable the auto-adding of incrementing roots (see the "Fixer" section). Defaults to true. Has no effect if enableFixer is set to false.

`enableRestElementFixer`

Whether to enable the rest element fixer (see "Rest Element (RestElement) insertions"). Defaults to true.

`checkRestProperty`

If set to true, will report (and add fixer insertions) for missing rest properties. Defaults to false.

If set to true, note that you can still document the subproperties of the rest property using other jsdoc features, e.g., @typedef:

/**
 * @typedef ExtraOptions
 * @property innerProp1
 * @property innerProp2
 */

/**
 * @param cfg
 * @param cfg.num
 * @param {ExtraOptions} extra
 */
function quux ({num, ...extra}) {
}

Setting this option to false (the default) may be useful in cases where you already have separate @param definitions for each of the properties within the rest property.

For example, with the option disabled, this will not give an error despite extra not having any definition:

/**
 * @param cfg
 * @param cfg.num
 */
function quux ({num, ...extra}) {
}

Nor will this:

/**
 * @param cfg
 * @param cfg.num
 * @param cfg.innerProp1
 * @param cfg.innerProp2
 */
function quux ({num, ...extra}) {
}

`autoIncrementBase`

Numeric to indicate the number at which to begin auto-incrementing roots. Defaults to 0.

`unnamedRootBase`

An array of root names to use in the fixer when roots are missing. Defaults to ['root']. Note that only when all items in the array besides the last are exhausted will auto-incrementing occur. So, with unnamedRootBase: ['arg', 'config'], the following:

function quux ({foo}, [bar], {baz}) {
}

...will get the following jsdoc block added:

/**
* @param arg
* @param arg.foo
* @param config0
* @param config0.0 (`bar`)
* @param config1
* @param config1.baz
*/

`exemptedBy`

Array of tags (e.g., ['type']) whose presence on the document block avoids the need for a @param. Defaults to an array with inheritdoc. If you set this array, it will overwrite the default, so be sure to add back inheritdoc if you wish its presence to cause exemption of the rule.

`checkTypesPattern`

When one specifies a type, unless it is of a generic type, like object or array, it may be considered unnecessary to have that object's destructured components required, especially where generated docs will link back to the specified type. For example:

/**
 * @param {SVGRect} bbox - a SVGRect
 */
export const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};

By default checkTypesPattern is set to /^(?:[oO]bject|[aA]rray|PlainObject|Generic(?:Object|Array))$/, meaning that destructuring will be required only if the type of the @param (the text between curly brackets) is a match for "Object" or "Array" (with or without initial caps), "PlainObject", or "GenericObject", "GenericArray" (or if no type is present). So in the above example, the lack of a match will mean that no complaint will be given about the undocumented destructured parameters.

Note that the / delimiters are optional, but necessary to add flags.

You could set this regular expression to a more expansive list, or you could restrict it such that even types matching those strings would not need destructuring.

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). May be useful for adding such as TSMethodSignature in TypeScript or restricting the contexts which are checked.

See the "AST and Selectors" section of our README for more on the expected format.

`checkConstructors`

A value indicating whether constructors should be checked. Defaults to true.

`checkGetters`

A value indicating whether getters should be checked. Defaults to false.

`checkSetters`

A value indicating whether setters should be checked. Defaults to false.

`checkDestructured`

Whether to require destructured properties. Defaults to true.

`checkDestructuredRoots`

Whether to check the existence of a corresponding @param for root objects of destructured properties (e.g., that for function ({a, b}) {}, that there is something like @param myRootObj defined that can correspond to the {a, b} object parameter).

If checkDestructuredRoots is false, checkDestructured will also be implied to be false (i.e., the inside of the roots will not be checked either, e.g., it will also not complain if a or b do not have their own documentation). Defaults to true.

`useDefaultObjectProperties`

Set to true if you wish to expect documentation of properties on objects supplied as default values. Defaults to false.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`param`
Aliases	`arg`, `argument`
Recommended	true
Options	`autoIncrementBase`, `checkDestructured`, `checkDestructuredRoots`, `contexts`, `enableFixer`, `enableRootFixer`, `enableRestElementFixer`, `checkRestProperty`, `exemptedBy`, `checkConstructors`, `checkGetters`, `checkSetters`, `checkTypesPattern`, `unnamedRootBase`, `useDefaultObjectProperties`
Settings	`overrideReplacesDocs`, `augmentsExtendsReplacesDocs`, `implementsReplacesDocs`

The following patterns are considered problems:

/**
 *
 */
function quux (foo) {

}
// Message: Missing JSDoc @param "foo" declaration.

/**
 *
 */
function quux (foo) {

}
// Options: [{"contexts":["FunctionDeclaration"]}]
// Message: Missing JSDoc @param "foo" declaration.

/**
 *
 */
function quux ({foo}) {

}
// Message: Missing JSDoc @param "root0" declaration.

/**
 * @param foo
 */
function quux (foo, bar, {baz}) {

}
// Options: [{"checkDestructured":false}]
// Message: Missing JSDoc @param "bar" declaration.

/**
 * @param foo
 */
function quux (foo, bar, {baz}) {

}
// Options: [{"checkDestructuredRoots":false}]
// Message: Missing JSDoc @param "bar" declaration.

/**
 *
 */
function quux ({foo}) {

}
// Options: [{"enableFixer":false}]
// Message: Missing JSDoc @param "root0" declaration.

/**
 *
 */
function quux ({foo: bar = 5} = {}) {

}
// Message: Missing JSDoc @param "root0" declaration.

/**
 * @param
 */
function quux ({foo}) {

}
// Message: Missing JSDoc @param "root0" declaration.

/**
 * @param
 */
function quux ({foo}) {

}
// Options: [{"autoIncrementBase":1}]
// Message: Missing JSDoc @param "root1" declaration.

/**
 * @param options
 */
function quux ({foo}) {

}
// Message: Missing JSDoc @param "options.foo" declaration.

/**
 * @param
 */
function quux ({ foo, bar: { baz }}) {

}
// Message: Missing JSDoc @param "root0" declaration.

/**
 *
 */
function quux ({foo}, {bar}) {

}
// Options: [{"unnamedRootBase":["arg"]}]
// Message: Missing JSDoc @param "arg0" declaration.

/**
 *
 */
function quux ({foo}, {bar}) {

}
// Options: [{"unnamedRootBase":["arg","config"]}]
// Message: Missing JSDoc @param "arg" declaration.

/**
 *
 */
function quux ({foo}, {bar}) {

}
// Options: [{"enableRootFixer":false,"unnamedRootBase":["arg","config"]}]
// Message: Missing JSDoc @param "arg" declaration.

/**
 *
 */
function quux (foo, bar) {

}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @param foo
 */
function quux (foo, bar) {

}
// Message: Missing JSDoc @param "bar" declaration.

/**
 * @param bar
 */
function quux (foo, bar, baz) {

}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @param foo
 * @param bar
 */
function quux (foo, bar, baz) {

}
// Message: Missing JSDoc @param "baz" declaration.

/**
 * @param baz
 */
function quux (foo, bar, baz) {

}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @param
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"arg"}}}
// Message: Missing JSDoc @arg "foo" declaration.

/**
 * @param foo
 */
function quux (foo, bar) {

}
// Message: Missing JSDoc @param "bar" declaration.

/**
 * @override
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"overrideReplacesDocs":false}}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @implements
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"implementsReplacesDocs":false}}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @augments
 */
function quux (foo) {

}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @extends
 */
function quux (foo) {

}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @override
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Settings: {"jsdoc":{"overrideReplacesDocs":false}}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @implements
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Settings: {"jsdoc":{"implementsReplacesDocs":false}}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @augments
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @extends
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Message: Missing JSDoc @param "foo" declaration.

export class SomeClass {
  /**
   * @param property
   */
  constructor(private property: string, private foo: number) {}
}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @param
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":false}}}
// Message: Unexpected tag `@param`

/**
 *
 */
function quux ({bar, baz}, foo) {
}
// Message: Missing JSDoc @param "root0" declaration.

/**
 *
 */
function quux (foo, {bar, baz}) {
}
// Message: Missing JSDoc @param "foo" declaration.

/**
 *
 */
function quux ([bar, baz], foo) {
}
// Message: Missing JSDoc @param "root0" declaration.

/**
 *
 */
function quux (foo) {
}
// Options: [{"exemptedBy":["notPresent"]}]
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @inheritdoc
 */
function quux (foo) {

}
// Options: [{"exemptedBy":[]}]
// Message: Missing JSDoc @param "foo" declaration.

/**
 * @inheritdoc
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Missing JSDoc @param "foo" declaration.

/**
 * Assign the project to a list of employees.
 * @param {object[]} employees - The employees who are responsible for the project.
 * @param {string} employees[].name - The name of an employee.
 * @param {string} employees[].department - The employee's department.
 */
function assign (employees, name) {

};
// Message: Missing JSDoc @param "name" declaration.

interface ITest {
/**
 * Test description.
 */
TestMethod(id: number): void;
}
// Options: [{"contexts":["TSMethodSignature"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * A test class.
 */
abstract class TestClass
{
/**
 * A test method.
 */
abstract TestFunction(id);
}
// Options: [{"contexts":["TSEmptyBodyFunctionExpression"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * A test class.
 */
declare class TestClass
{
/**
 *
 */
TestMethod(id);
}
// Options: [{"contexts":["TSEmptyBodyFunctionExpression"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * A test function.
 */
declare let TestFunction: (id) => void;
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * A test function.
 */
let TestFunction: (id) => void;
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * A test function.
 */
function test(
  processor: (id: number) => string
) {
  return processor(10);
}
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * A test function.
 */
let test = (processor: (id: number) => string) =>
{
  return processor(10);
}
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

class TestClass {
  /**
  * A class property.
  */
  public Test: (id: number) => string;
}
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

class TestClass {
  /**
   * A class method.
   */
  public TestMethod(): (id: number) => string
  {
  }
}
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

interface TestInterface {
/**
 * An interface property.
 */
public Test: (id: number) => string;
}
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

interface TestInterface {
  /**
   * An interface method.
   */
  public TestMethod(): (id: number) => string;
}
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * A function with return type
 */
function test(): (id: number) => string;
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * A function with return type
 */
let test = (): (id: number) => string =>
{
  return (id) => `${id}`;
}
// Options: [{"contexts":["TSFunctionType"]}]
// Message: Missing JSDoc @param "id" declaration.

/**
 * @param baz
 * @param options
 */
function quux (baz, {foo: bar}) {

}
// Message: Missing JSDoc @param "options.foo" declaration.

class Client {
  /**
   * Set collection data.
   * @param  {Object}   data                    The collection data object.
   * @param  {number}   data.last_modified
   * @param  {Object}   options            The options object.
   * @param  {Object}   [options.headers]       The headers object option.
   * @param  {Number}   [options.retry=0]       Number of retries to make
   *     when faced with transient errors.
   * @param  {Boolean}  [options.safe]          The safe option.
   * @param  {Boolean}  [options.patch]         The patch option.
   * @param  {Number}   [options.last_modified] The last_modified option.
   * @return {Promise<Object, Error>}
   */
  async setData(
    data: { last_modified?: number },
    options: {
      headers?: Record<string, string>;
      safe?: boolean;
      retry?: number;
      patch?: boolean;
      last_modified?: number;
      permissions?: [];
    } = {}
  ) {}
}
// Message: Missing JSDoc @param "options.permissions" declaration.

/**
 *
 */
function quux (foo) {

}
// Options: [{"enableFixer":false}]
// Message: Missing JSDoc @param "foo" declaration.

class Client {
  /**
   * Set collection data.
   * @return {Promise<Object, Error>}
   */
  async setData(
    data: { last_modified?: number }
  ) {}
}
// Message: Missing JSDoc @param "data" declaration.

/**
 * @param cfg
 * @param cfg.num
 */
function quux ({num, ...extra}) {
}
// Options: [{"checkRestProperty":true}]
// Message: Missing JSDoc @param "cfg.extra" declaration.

/**
 * @param cfg
 * @param cfg.opts
 * @param cfg.opts.num
 */
function quux ({opts: {num, ...extra}}) {
}
// Options: [{"checkRestProperty":true}]
// Message: Missing JSDoc @param "cfg.opts.extra" declaration.

/**
 * @param {GenericArray} cfg
 * @param {number} cfg.0
 */
function baar ([a, ...extra]) {
  //
}
// Message: Missing JSDoc @param "cfg.1" declaration.

/**
 * @param a
 */
function baar (a, ...extra) {
  //
}
// Message: Missing JSDoc @param "extra" declaration.

/**
 * Converts an SVGRect into an object.
 * @param {SVGRect} bbox - a SVGRect
 */
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};
// Options: [{"checkTypesPattern":"SVGRect"}]
// Message: Missing JSDoc @param "bbox.x" declaration.

/**
 * Converts an SVGRect into an object.
 * @param {object} bbox - a SVGRect
 */
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};
// Message: Missing JSDoc @param "bbox.x" declaration.

module.exports = class GraphQL {
  /**
   * @param fetchOptions
   * @param cacheKey
   */
  fetch = ({ url, ...options }, cacheKey) => {
  }
};
// Options: [{"checkRestProperty":true}]
// Message: Missing JSDoc @param "fetchOptions.url" declaration.

(function() {
	/**
	 * A function.
	 */
	function f(param) {
		return !param;
	}
})();
// Message: Missing JSDoc @param "param" declaration.

/**
 * Description.
 * @param {Object} options
 * @param {Object} options.foo
 */
function quux ({ foo: { bar } }) {}
// Message: Missing JSDoc @param "options.foo.bar" declaration.

/**
 * Description.
 * @param {FooBar} options
 * @param {FooBar} options.foo
 */
function quux ({ foo: { bar } }) {}
// Options: [{"checkTypesPattern":"FooBar"}]
// Message: Missing JSDoc @param "options.foo.bar" declaration.

/**
 * Description.
 * @param {Object} options
 * @param {FooBar} foo
 */
function quux ({ foo: { bar } }) {}
// Message: Missing JSDoc @param "options.foo" declaration.

/**
 * Description.
 * @param {Object} options
 * @param options.foo
 */
function quux ({ foo: { bar } }) {}
// Message: Missing JSDoc @param "options.foo.bar" declaration.

/**
 * Description.
 * @param {object} options Options.
 * @param {object} options.foo A description.
 * @param {object} options.foo.bar
 */
function foo({ foo: { bar: { baz } }}) {}
// Message: Missing JSDoc @param "options.foo.bar.baz" declaration.

/**
* Returns a number.
* @param {Object} props Props.
* @param {Object} props.prop Prop.
* @return {number} A number.
*/
export function testFn1 ({ prop = { a: 1, b: 2 } }) {
}
// Options: [{"useDefaultObjectProperties":true}]
// Message: Missing JSDoc @param "props.prop.a" declaration.

The following patterns are not considered problems:

/**
 * @param foo
 */
function quux (foo) {

}

/**
 * @param root0
 * @param root0.foo
 */
function quux ({foo}) {

}

/**
 * @param root0
 * @param root0.foo
 * @param root1
 * @param root1.bar
 */
function quux ({foo}, {bar}) {

}

/**
 * @param arg0
 * @param arg0.foo
 * @param arg1
 * @param arg1.bar
 */
function quux ({foo}, {bar}) {

}
// Options: [{"unnamedRootBase":["arg"]}]

/**
 * @param arg
 * @param arg.foo
 * @param config0
 * @param config0.bar
 * @param config1
 * @param config1.baz
 */
function quux ({foo}, {bar}, {baz}) {

}
// Options: [{"unnamedRootBase":["arg","config"]}]

/**
 * @inheritdoc
 */
function quux (foo) {

}

/**
 * @inheritDoc
 */
function quux (foo) {

}

/**
 * @arg foo
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"param":"arg"}}}

/**
 * @override
 * @param foo
 */
function quux (foo) {

}

/**
 * @override
 */
function quux (foo) {

}

/**
 * @override
 */
class A {
  /**
    *
    */
  quux (foo) {

  }
}

/**
 * @override
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"overrideReplacesDocs":true}}

/**
 * @implements
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}

/**
 * @implements
 */
function quux (foo) {

}

/**
 * @implements
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"implementsReplacesDocs":true}}

/**
 * @implements
 * @param foo
 */
function quux (foo) {

}

/**
 * @augments
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"augmentsExtendsReplacesDocs":true}}

/**
 * @augments
 * @param foo
 */
function quux (foo) {

}

/**
 * @extends
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"augmentsExtendsReplacesDocs":true}}

/**
 * @extends
 * @param foo
 */
function quux (foo) {

}

/**
 * @augments
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"augmentsExtendsReplacesDocs":true}}

/**
 * @extends
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"augmentsExtendsReplacesDocs":true}}

/**
 * @override
 */
class A {
  /**
  * @param foo
  */
  quux (foo) {

  }
}

/**
 * @override
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Settings: {"jsdoc":{"overrideReplacesDocs":true}}

/**
 * @implements
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Settings: {"jsdoc":{"implementsReplacesDocs":true}}

/**
 * @implements
 */
class A {
  /**
   * @param foo
   */
  quux (foo) {

  }
}

/**
 * @augments
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Settings: {"jsdoc":{"augmentsExtendsReplacesDocs":true}}

/**
 * @augments
 */
class A {
  /**
   * @param foo
   */
  quux (foo) {

  }
}

/**
 * @extends
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Settings: {"jsdoc":{"augmentsExtendsReplacesDocs":true}}

/**
 * @extends
 */
class A {
  /**
   * @param foo
   */
  quux (foo) {

  }
}

/**
 * @augments
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Settings: {"jsdoc":{"augmentsExtendsReplacesDocs":true}}

/**
 * @extends
 */
class A {
  /**
   *
   */
  quux (foo) {

  }
}
// Settings: {"jsdoc":{"augmentsExtendsReplacesDocs":true}}

/**
 * @internal
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"ignoreInternal":true}}

/**
 * @private
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"ignorePrivate":true}}

/**
 * @access private
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"ignorePrivate":true}}

// issue 182: optional chaining
/** @const {boolean} test */
const test = something?.find(_ => _)

/** @type {RequestHandler} */
function foo(req, res, next) {}

/**
 * @type {MyCallback}
 */
function quux () {

}
// Options: [{"exemptedBy":["type"]}]

/**
 * @override
 */
var A = class {
  /**
    *
    */
  quux (foo) {

  }
}

export class SomeClass {
  /**
   * @param property
   */
  constructor(private property: string) {}
}

/**
 * Assign the project to an employee.
 *
 * @param {object} employee - The employee who is responsible for the project.
 * @param {string} employee.name - The name of the employee.
 * @param {string} employee.department - The employee's department.
 */
function assign({name, department}) {
  // ...
}

export abstract class StephanPlugin<O, D> {

    /**
     * Called right after Stephan loads the plugin file.
     *
     * @example
     *```typescript
     * type Options = {
     *      verbose?: boolean;
     *      token?: string;
     * }
     * ```
     *
     * Note that your Options type should only have optional properties...
     *
     * @param args Arguments compiled and provided by StephanClient.
     * @param args.options The options as provided by the user, or an empty object if not provided.
     * @param args.client The options as provided by the user, or an empty object if not provided.
     * @param defaultOptions The default options as provided by the plugin, or an empty object.
     */
    public constructor({options, client}: {
        options: O;
        client: unknown;
    }, defaultOptions: D) {

    }
}

/**
 *
 */
function quux (foo) {

}
// Options: [{"contexts":["ArrowFunctionExpression"]}]

/**
* A function with return type
*
* @param id
*/
let test = (): (id: number) => string =>
{
  return (id) => `${id}`;
}
// Options: [{"contexts":["TSFunctionType"]}]

/** @abstract */
class base {
/** @param {boolean} arg0 */
constructor(arg0) {}
}

class foo extends base {
/** @inheritDoc */
constructor(arg0) {
super(arg0);
this.arg0 = arg0;
}
}
// Settings: {"jsdoc":{"mode":"closure"}}

    export abstract class StephanPlugin<O, D> {

    /**
     * Called right after Stephan loads the plugin file.
     *
     * @example
     *```typescript
     * type Options = {
     *      verbose?: boolean;
     *      token?: string;
     * }
     * ```
     *
     * Note that your Options type should only have optional properties...
     *
     * @param args Arguments compiled and provided by StephanClient.
     * @param args.options The options as provided by the user, or an empty object if not provided.
     * @param args.client The options as provided by the user, or an empty object if not provided.
     * @param args.client.name The name of the client.
     * @param defaultOptions The default options as provided by the plugin, or an empty object.
     */
    public constructor({ options, client: { name } }: {
        options: O;
        client: { name: string };
    }, defaultOptions: D) {

    }
}

/**
* @param {string} cb
*/
function createGetter (cb) {
  return function (...args) {
    cb();
  };
}

/**
 * @param cfg
 * @param cfg.num
 */
function quux ({num, ...extra}) {
}

/**
  * @param {GenericArray} cfg
  * @param {number} cfg.0
 */
function baar ([a, ...extra]) {
  //
}
// Options: [{"enableRestElementFixer":false}]

/**
  * @param a
 */
function baar (a, ...extra) {
  //
}
// Options: [{"enableRestElementFixer":false}]

/**
* Converts an SVGRect into an object.
* @param {SVGRect} bbox - a SVGRect
*/
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};

/**
* Converts an SVGRect into an object.
* @param {object} bbox - a SVGRect
*/
const bboxToObj = function ({x, y, width, height}) {
  return {x, y, width, height};
};
// Options: [{"checkTypesPattern":"SVGRect"}]

class CSS {
  /**
   * Set one or more CSS properties for the set of matched elements.
   *
   * @param {Object} propertyObject - An object of property-value pairs to set.
   */
  setCssObject(propertyObject: {[key: string]: string | number}): void {
  }
}

/**
 * @param foo
 * @param bar
 * @param cfg
 */
function quux (foo, bar, {baz}) {

}
// Options: [{"checkDestructured":false}]

/**
 * @param foo
 * @param bar
 */
function quux (foo, bar, {baz}) {

}
// Options: [{"checkDestructuredRoots":false}]

/**
 * @param root
 * @param root.foo
 */
function quux ({"foo": bar}) {

}

/**
 * @param root
 * @param root."foo"
 */
function quux ({foo: bar}) {

}

/**
 * Description.
 * @param {string} b Description `/**`.
 */
module.exports = function a(b) {
  console.info(b);
};

/**
 * Description.
 * @param {Object} options Options.
 * @param {FooBar} options.foo foo description.
 */
function quux ({ foo: { bar } }) {}

/**
 * Description.
 * @param {FooBar} options
 * @param {Object} options.foo
 */
function quux ({ foo: { bar } }) {}
// Options: [{"checkTypesPattern":"FooBar"}]

/**
 * @param obj
 * @param obj.data
 * @param obj.data.0
 * @param obj.data.1
 * @param obj.data.2
 * @param obj.defaulting
 * @param obj.defaulting.0
 * @param obj.defaulting.1
 */
function Item({
  data: [foo, bar, ...baz],
  defaulting: [quux, xyz] = []
}) {
}

/**
* Returns a number.
* @param {Object} props Props.
* @param {Object} props.prop Prop.
* @return {number} A number.
*/
export function testFn1 ({ prop = { a: 1, b: 2 } }) {
}
// Options: [{"useDefaultObjectProperties":false}]

`require-property`

Requires that all @typedef and @namespace tags have @property when their type is a plain object, Object, or PlainObject.

Note that any other type, including a subtype of object such as object<string, string>, will not be reported.

Fixer

The fixer for require-property will add an empty @property.


Context	Everywhere
Tags	`typedef`, `namespace`
Recommended	true

The following patterns are considered problems:

/**
 * @typedef {object} SomeTypedef
 */
// Message: Missing JSDoc @property.

class Test {
    /**
     * @typedef {object} SomeTypedef
     */
    quux () {}
}
// Message: Missing JSDoc @property.

/**
 * @typedef {PlainObject} SomeTypedef
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":"prop"}}}
// Message: Missing JSDoc @prop.

/**
 * @namespace {Object} SomeName
 */
// Message: Missing JSDoc @property.

The following patterns are not considered problems:

/**
 *
 */

/**
 * @property
 */

/**
 * @typedef {Object} SomeTypedef
 * @property {SomeType} propName Prop description
 */

/**
 * @typedef {object} SomeTypedef
 * @prop {SomeType} propName Prop description
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":"prop"}}}

/**
 * @typedef {object} SomeTypedef
 * @property
 * // arbitrary property content
 */

/**
 * @typedef {object<string, string>} SomeTypedef
 */

/**
 * @typedef {string} SomeTypedef
 */

/**
 * @namespace {object} SomeName
 * @property {SomeType} propName Prop description
 */

/**
 * @namespace {object} SomeName
 * @property
 * // arbitrary property content
 */

/**
 * @typedef {object} SomeTypedef
 * @property someProp
 * @property anotherProp This with a description
 * @property {anotherType} yetAnotherProp This with a type and desc.
 */
function quux () {

}

`require-property-description`

Requires that each @property tag has a description value.


Context	everywhere
Tags	`property`
Aliases	`prop`
Recommended	true

The following patterns are considered problems:

/**
 * @typedef {SomeType} SomeTypedef
 * @property foo
 */
// Message: Missing JSDoc @property "foo" description.

/**
 * @typedef {SomeType} SomeTypedef
 * @prop foo
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":"prop"}}}
// Message: Missing JSDoc @prop "foo" description.

/**
 * @typedef {SomeType} SomeTypedef
 * @property foo
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":false}}}
// Message: Unexpected tag `@property`

The following patterns are not considered problems:

/**
 * @typedef {SomeType} SomeTypedef
 */

/**
 * @typedef {SomeType} SomeTypedef
 * @property foo Foo.
 */

/**
 * @namespace {SomeType} SomeName
 * @property foo Foo.
 */

/**
 * @class
 * @property foo Foo.
 */

/**
 * Typedef with multi-line property type.
 *
 * @typedef {object} MyType
 * @property {function(
 *   number
 * )} numberEater Method which takes a number.
 */

`require-property-name`

Requires that all function @property tags have names.


Context	everywhere
Tags	`property`
Aliases	`prop`
Recommended	true

The following patterns are considered problems:

/**
 * @typedef {SomeType} SomeTypedef
 * @property
 */
// Message: There must be an identifier after @property type.

/**
 * @typedef {SomeType} SomeTypedef
 * @property {string}
 */
// Message: There must be an identifier after @property tag.

/**
 * @typedef {SomeType} SomeTypedef
 * @property foo
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":false}}}
// Message: Unexpected tag `@property`

The following patterns are not considered problems:

/**
 * @typedef {SomeType} SomeTypedef
 * @property foo
 */

/**
 * @typedef {SomeType} SomeTypedef
 * @property {string} foo
 */

/**
 * @namespace {SomeType} SomeName
 * @property {string} foo
 */

/**
 * @class
 * @property {string} foo
 */

`require-property-type`

Requires that each @property tag has a type value.


Context	everywhere
Tags	`property`
Aliases	`prop`
Recommended	true

The following patterns are considered problems:

/**
 * @typedef {SomeType} SomeTypedef
 * @property foo
 */
// Message: Missing JSDoc @property "foo" type.

/**
 * @typedef {SomeType} SomeTypedef
 * @prop foo
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":"prop"}}}
// Message: Missing JSDoc @prop "foo" type.

/**
 * @typedef {SomeType} SomeTypedef
 * @property foo
 */
// Settings: {"jsdoc":{"tagNamePreference":{"property":false}}}
// Message: Unexpected tag `@property`

The following patterns are not considered problems:

/**
 * @typedef {SomeType} SomeTypedef
 */

/**
 * @typedef {SomeType} SomeTypedef
 * @property {number} foo
 */

/**
 * @namespace {SomeType} SomeName
 * @property {number} foo
 */

/**
 * @class
 * @property {number} foo
 */

`require-returns-check`

Requires a return statement (or non-undefined Promise resolve value) in function bodies if a @returns tag (without a void or undefined type) is specified in the function's jsdoc comment.

Will also report @returns {void} and @returns {undefined} if exemptAsync is set to false no non-undefined returned or resolved value is found.

Will also report if multiple @returns tags are present.

Options

exemptAsync - By default, functions which return a Promise that are not detected as resolving with a non-undefined value and async functions (even ones that do not explicitly return a value, as these are returning a Promise implicitly) will be exempted from reporting by this rule. If you wish to insist that only Promise's which resolve to non-undefined values or async functions with explicit return's will be exempted from reporting (i.e., that async functions can be reported if they lack an explicit (non-undefined) return when a @returns is present), you can set exemptAsync to false on the options object.
reportMissingReturnForUndefinedTypes - If true and no return or resolve value is found, this setting will even insist that reporting occur with void or undefined (including as an indicated Promise type). Unlike require-returns, with this option in the rule, one can discourage the labeling of undefined types. Defaults to false.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`
Tags	`returns`
Aliases	`return`
Options	`exemptAsync`, `reportMissingReturnForUndefinedTypes`
Recommended	true

The following patterns are considered problems:

/**
 * @returns
 */
function quux (foo) {

}
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * @return
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"returns":"return"}}}
// Message: JSDoc @return declaration present but return expression not available in function.

/**
 * @returns
 */
const quux = () => {}
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * @returns {undefined} Foo.
 * @returns {String} Foo.
 */
function quux () {

  return foo;
}
// Message: Found more than one @returns declaration.

const language = {
  /**
   * @param {string} name
   * @returns {string}
   */
  get name() {
    this._name = name;
  }
}
// Message: JSDoc @returns declaration present but return expression not available in function.

class Foo {
  /**
   * @returns {string}
   */
  bar () {
  }
}
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * @returns
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"returns":false}}}
// Message: Unexpected tag `@returns`

/**
 * @returns {string}
 */
function f () {
  function g() {
    return 'foo'
  }

  () => {
    return 5
  }
}
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * @returns {Promise<void>}
 */
async function quux() {}
// Options: [{"exemptAsync":false}]
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * @returns {Promise<void>}
 */
function quux() {
  return new Promise((resolve, reject) => {})
}
// Options: [{"exemptAsync":false}]
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * @returns {Promise<void>}
 */
function quux() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve();
    });
  })
}
// Options: [{"exemptAsync":false}]
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * Description.
 * @returns {string}
 */
async function foo() {
  return new Promise(resolve => resolve());
}
// Options: [{"exemptAsync":false}]
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * Description.
 * @returns {void}
 */
async function foo() {
  return new Promise(resolve => resolve());
}
// Options: [{"exemptAsync":false,"reportMissingReturnForUndefinedTypes":true}]
// Message: JSDoc @returns declaration present but return expression not available in function.

/**
 * @returns { void } Foo.
 */
function quux () {}
// Options: [{"reportMissingReturnForUndefinedTypes":true}]
// Message: JSDoc @returns declaration present but return expression not available in function.

The following patterns are not considered problems:

/**
 * @returns Foo.
 */
function quux () {

  return foo;
}

/**
 * @returns {string} Foo.
 */
function quux () {

  return foo;
}

/**
 * @returns {string} Foo.
 */
function quux () {

  return foo;
}

/**
 *
 */
function quux () {
}

/**
 * @returns {*} Foo.
 */
const quux = () => foo;

/**
 * @returns {undefined} Foo.
 */
function quux () {}

/**
 * @returns { void } Foo.
 */
function quux () {}

/**
 * @returns {Promise<void>}
 */
async function quux() {}

/**
 * @returns {Promise<void>}
 */
const quux = async function () {}

/**
 * @returns {Promise<void>}
 */
const quux = async () => {}

/**
 * @returns Foo.
 * @abstract
 */
function quux () {
  throw new Error('must be implemented by subclass!');
}

/**
 * @returns Foo.
 * @virtual
 */
function quux () {
  throw new Error('must be implemented by subclass!');
}

/**
 * @returns Foo.
 * @constructor
 */
function quux () {
}

/**
 * @interface
 */
class Foo {
  /**
   * @returns {string}
   */
  bar () {
  }
}

/**
 * @record
 */
class Foo {
  /**
   * @returns {string}
   */
  bar () {
  }
}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @returns {undefined} Foo.
 */
function quux () {
}

/**
 * @returns {void} Foo.
 */
function quux () {
}

/**
 * @returns {void} Foo.
 */
function quux () {
  return undefined;
}

/**
 * @returns {void} Foo.
 */
function quux () {
  return;
}

/**
 *
 */
function quux () {
  return undefined;
}

/**
 *
 */
function quux () {
  return;
}

/**
 * @returns {true}
 */
function quux () {
  try {
    return true;
  } catch (err) {
  }
  return;
}

/**
 * @returns {true}
 */
function quux () {
  try {
  } finally {
    return true;
  }
  return;
}

/**
 * @returns {true}
 */
function quux () {
  try {
    return;
  } catch (err) {
  }
  return true;
}

/**
 * @returns {true}
 */
function quux () {
  try {
    something();
  } catch (err) {
    return true;
  }
  return;
}

/**
 * @returns {true}
 */
function quux () {
  switch (true) {
  case 'abc':
    return true;
  }
  return;
}

/**
 * @returns {true}
 */
function quux () {
  switch (true) {
  case 'abc':
    return;
  }
  return true;
}

/**
 * @returns {true}
 */
function quux () {
  for (const i of abc) {
    return true;
  }
  return;
}

/**
 * @returns {true}
 */
function quux () {
  for (const a in b) {
    return true;
  }
}

/**
 * @returns {true}
 */
function quux () {
  for (let i=0; i<n; i+=1) {
    return true;
  }
}

/**
 * @returns {true}
 */
function quux () {
  while(true) {
    return true
  }
}

/**
 * @returns {true}
 */
function quux () {
  do {
    return true
  }
  while(true)
}

/**
 * @returns {true}
 */
function quux () {
  if (true) {
    return;
  }
  return true;
}

/**
 * @returns {true}
 */
function quux () {
  if (true) {
    return true;
  }
}

/**
 * @returns {true}
 */
function quux () {
  var a = {};
  with (a) {
    return true;
  }
}

/**
 * @returns {true}
 */
function quux () {
  if (true) {
    return;
  } else {
    return true;
  }
  return;
}

/**
 * @returns {Promise<number>}
 */
async function quux() {
  return 5;
}

/**
 * @returns {Promise<number>}
 */
async function quux() {
  return 5;
}
// Options: [{"exemptAsync":false}]

/**
 * @returns {Promise<void>}
 */
function quux() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve(true);
    });
  })
}
// Options: [{"exemptAsync":false}]

/**
 * Description.
 * @returns {void}
 */
async function foo() {
  return new Promise(resolve => resolve());
}
// Options: [{"reportMissingReturnForUndefinedTypes":true}]

/**
 * @returns { void } Foo.
 */
function quux () {
  return undefined;
}
// Options: [{"reportMissingReturnForUndefinedTypes":true}]

/**
 * @returns { string } Foo.
 */
function quux () {
  return 'abc';
}
// Options: [{"reportMissingReturnForUndefinedTypes":true}]

`require-returns-description`

Requires that the @returns tag has a description value. The error will not be reported if the return value is void or undefined or if it is Promise<void> or Promise<undefined>.

Options

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`returns`
Aliases	`return`
Recommended	true
Options	`contexts`

The following patterns are considered problems:

/**
 * @returns
 */
function quux (foo) {

}
// Message: Missing JSDoc @returns description.

/**
 * @returns {string}
 */
function quux (foo) {

}
// Message: Missing JSDoc @returns description.

/**
 * @returns {string}
 */
function quux (foo) {

}
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @returns description.

/**
 * @function
 * @returns {string}
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @returns description.

/**
 * @callback
 * @returns {string}
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @returns description.

/**
 * @return
 */
function quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"returns":"return"}}}
// Message: Missing JSDoc @return description.

/**
 * @returns
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"returns":false}}}
// Message: Unexpected tag `@returns`

The following patterns are not considered problems:

/**
 *
 */
function quux () {

}

/**
 * @returns Foo.
 */
function quux () {

}

/**
 * @returns Foo.
 */
function quux () {

}
// Options: [{"contexts":["any"]}]

/**
 * @returns {undefined}
 */
function quux () {

}

/**
 * @returns {void}
 */
function quux () {

}

/**
 * @returns {Promise<void>}
 */
function quux () {

}

/**
 * @returns {Promise<undefined>}
 */
function quux () {

}

/**
 * @function
 * @returns
 */

/**
 * @callback
 * @returns
 */

`require-returns-type`

Requires that @returns tag has type value.

Options

`contexts`

Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

See the "AST and Selectors" section of our README for more on the expected format.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`returns`
Aliases	`return`
Recommended	true
Options	`contexts`

The following patterns are considered problems:

/**
 * @returns
 */
function quux () {

}
// Message: Missing JSDoc @returns type.

/**
 * @returns Foo.
 */
function quux () {

}
// Message: Missing JSDoc @returns type.

/**
 * @returns Foo.
 */
function quux () {

}
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @returns type.

/**
 * @function
 * @returns Foo.
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @returns type.

/**
 * @callback
 * @returns Foo.
 */
// Options: [{"contexts":["any"]}]
// Message: Missing JSDoc @returns type.

/**
 * @return Foo.
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"returns":"return"}}}
// Message: Missing JSDoc @return type.

/**
 * @returns
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"returns":false}}}
// Message: Unexpected tag `@returns`

The following patterns are not considered problems:

/**
 * @returns {number}
 */
function quux () {

}

/**
 * @returns {number}
 */
function quux () {

}
// Options: [{"contexts":["any"]}]

/**
 * @function
 * @returns Foo.
 */

/**
 * @callback
 * @returns Foo.
 */

`require-returns`

Requires that returns are documented.

Will also report if multiple @returns tags are present.

Options

checkConstructors - A value indicating whether constructors should be checked for @returns tags. Defaults to false.
checkGetters - Boolean to determine whether getter methods should be checked for @returns tags. Defaults to true.
exemptedBy - Array of tags (e.g., ['type']) whose presence on the document block avoids the need for a @returns. Defaults to an array with inheritdoc. If you set this array, it will overwrite the default, so be sure to add back inheritdoc if you wish its presence to cause exemption of the rule.
forceRequireReturn - Set to true to always insist on @returns documentation regardless of implicit or explicit return's in the function. May be desired to flag that a project is aware of an undefined/void return. Defaults to false.
forceReturnsWithAsync - By default async functions that do not explicitly return a value pass this rule as an async function will always return a Promise, even if the Promise resolves to void. You can force all async functions (including ones with an explicit Promise but no detected non-undefined resolve value) to require @return documentation by setting forceReturnsWithAsync to true on the options object. This may be useful for flagging that there has been consideration of return type. Defaults to false.
contexts - Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface). This rule will only apply on non-default contexts when there is such a tag present and the forceRequireReturn option is set or if the forceReturnsWithAsync option is set with a present @async tag (since we are not checking against the actual return values in these cases).


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`returns`
Aliases	`return`
Recommended	true
Options	`checkConstructors`, `checkGetters`, `contexts`, `exemptedBy`, `forceRequireReturn`, `forceReturnsWithAsync`
Settings	`overrideReplacesDocs`, `augmentsExtendsReplacesDocs`, `implementsReplacesDocs`

The following patterns are considered problems:

/**
 *
 */
function quux (foo) {

  return foo;
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
const foo = () => ({
  bar: 'baz'
})
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
const foo = bar=>({ bar })
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
const foo = bar => bar.baz()
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux (foo) {

  return foo;
}
// Settings: {"jsdoc":{"tagNamePreference":{"returns":"return"}}}
// Message: Missing JSDoc @return declaration.

/**
 *
 */
async function quux() {
}
// Options: [{"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
const quux = async function () {}
// Options: [{"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
const quux = async () => {}
// Options: [{"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
async function quux () {}
// Options: [{"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
}
// Options: [{"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
}
// Options: [{"contexts":["any"],"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

/**
 * @function
 */
// Options: [{"contexts":["any"],"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

/**
 * @callback
 */
// Options: [{"contexts":["any"],"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

const language = {
  /**
   * @param {string} name
   */
  get name() {
    return this._name;
  }
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
async function quux () {
}
// Options: [{"forceReturnsWithAsync":true}]
// Message: Missing JSDoc @returns declaration.

/**
 * @function
 * @async
 */
// Options: [{"contexts":["any"],"forceReturnsWithAsync":true}]
// Message: Missing JSDoc @returns declaration.

/**
 * @callback
 * @async
 */
// Options: [{"contexts":["any"],"forceReturnsWithAsync":true}]
// Message: Missing JSDoc @returns declaration.

/**
 * @returns {undefined}
 * @returns {void}
 */
function quux (foo) {

  return foo;
}
// Message: Found more than one @returns declaration.

/**
 * @returns
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"returns":false}}}
// Message: Unexpected tag `@returns`

/**
 * @param foo
 */
function quux (foo) {
  return 'bar';
}
// Options: [{"exemptedBy":["notPresent"]}]
// Message: Missing JSDoc @returns declaration.

/**
 * @param {array} a
 */
async function foo(a) {
  return;
}
// Options: [{"forceReturnsWithAsync":true}]
// Message: Missing JSDoc @returns declaration.

/**
 * @param {array} a
 */
async function foo(a) {
  return Promise.all(a);
}
// Options: [{"forceReturnsWithAsync":true}]
// Message: Missing JSDoc @returns declaration.

class foo {
  /** gets bar */
  get bar() {
    return 0;
  }
}
// Options: [{"checkGetters":true}]
// Message: Missing JSDoc @returns declaration.

class TestClass {
  /**
   *
   */
  constructor() {
    return new Map();
  }
}
// Options: [{"checkConstructors":true}]
// Message: Missing JSDoc @returns declaration.

class TestClass {
  /**
   *
   */
  get Test() {
    return 0;
  }
}
// Options: [{"checkGetters":true}]
// Message: Missing JSDoc @returns declaration.

class quux {
  /**
   *
   */
  quux () {
  }
}
// Options: [{"contexts":["any"],"forceRequireReturn":true}]
// Message: Missing JSDoc @returns declaration.

/**
 * @param {array} a
 */
async function foo(a) {
  return Promise.all(a);
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux (foo) {

  return new Promise(function (resolve, reject) {
    resolve(foo);
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux (foo) {

  return new Promise(function (resolve, reject) {
    setTimeout(() => {
      resolve(true);
    });
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux (foo) {

  return new Promise(function (resolve, reject) {
    foo(resolve);
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    while(true) {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    do {
      resolve(true);
    }
    while(true)
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    if (true) {
      resolve(true);
    }
    return;
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    if (true) {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  var a = {};
  return new Promise((resolve, reject) => {
    with (a) {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  var a = {};
  return new Promise((resolve, reject) => {
    try {
      resolve(true);
    } catch (err) {}
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  var a = {};
  return new Promise((resolve, reject) => {
    try {
    } catch (err) {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  var a = {};
  return new Promise((resolve, reject) => {
    try {
    } catch (err) {
    } finally {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  var a = {};
  return new Promise((resolve, reject) => {
    switch (a) {
    case 'abc':
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    if (true) {
      resolve();
    } else {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    for (let i = 0; i < 5 ; i++) {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    for (const i of obj) {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    for (const i in obj) {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    if (true) {
      return;
    } else {
      resolve(true);
    }
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    function a () {
      resolve(true);
    }
    a();
  });
}
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
function quux () {
  return new Promise();
}
// Options: [{"forceReturnsWithAsync":true}]
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
async function quux () {
  return new Promise();
}
// Options: [{"forceReturnsWithAsync":true}]
// Message: Missing JSDoc @returns declaration.

/**
 *
 */
async function quux () {
  return new Promise((resolve, reject) => {});
}
// Options: [{"forceReturnsWithAsync":true}]
// Message: Missing JSDoc @returns declaration.

The following patterns are not considered problems:

/**
 * @returns Foo.
 */
function quux () {

  return foo;
}

/**
 * @returns Foo.
 */
function quux () {

  return foo;
}
// Options: [{"contexts":["any"]}]

/**
 *
 */
function quux () {
}

/**
 *
 */
function quux (bar) {
  bar.filter(baz => {
    return baz.corge();
  })
}

/**
 * @returns Array
 */
function quux (bar) {
  return bar.filter(baz => {
    return baz.corge();
  })
}

/**
 * @returns Array
 */
const quux = (bar) => bar.filter(({ corge }) => corge())

/**
 * @inheritdoc
 */
function quux (foo) {
}

/**
 * @override
 */
function quux (foo) {
}

/**
 * @constructor
 */
function quux (foo) {
  return true;
}

/**
 * @implements
 */
function quux (foo) {
  return true;
}

/**
 * @override
 */
function quux (foo) {

  return foo;
}

/**
 * @class
 */
function quux (foo) {
  return true;
}

/**
 * @constructor
 */
function quux (foo) {

}

/**
 * @returns {object}
 */
function quux () {

  return {a: foo};
}

/**
 * @returns {object}
 */
const quux = () => ({a: foo});

/**
 * @returns {object}
 */
const quux = () => {
  return {a: foo}
};

/**
 * @returns {void}
 */
function quux () {
}

/**
 * @returns {void}
 */
const quux = () => {

}

/**
 * @returns {undefined}
 */
function quux () {
}

/**
 * @returns {undefined}
 */
const quux = () => {

}

/**
 *
 */
function quux () {
}

/**
 *
 */
const quux = () => {

}

class Foo {
  /**
   *
   */
  constructor () {
  }
}
// Options: [{"forceRequireReturn":true}]

const language = {
  /**
   * @param {string} name
   */
  set name(name) {
    this._name = name;
  }
}

/**
 * @returns {void}
 */
function quux () {
}
// Options: [{"forceRequireReturn":true}]

/**
 * @returns {void}
 */
function quux () {
  return undefined;
}

/**
 * @returns {void}
 */
function quux () {
  return undefined;
}
// Options: [{"forceRequireReturn":true}]

/**
 * @returns {void}
 */
function quux () {
  return;
}

/**
 * @returns {void}
 */
function quux () {
}
// Options: [{"forceRequireReturn":true}]

/**
 * @returns {void}
 */
function quux () {
  return;
}
// Options: [{"forceRequireReturn":true}]

/** @type {RequestHandler} */
function quux (req, res , next) {
  return;
}

/**
 * @returns {Promise}
 */
async function quux () {
}
// Options: [{"forceRequireReturn":true}]

/**
 * @returns {Promise}
 */
async function quux () {
}
// Options: [{"forceReturnsWithAsync":true}]

/**
 *
 */
async function quux () {}

/**
 *
 */
const quux = async function () {}

/**
 *
 */
const quux = async () => {}

/** foo class */
class foo {
  /** foo constructor */
  constructor () {
    // =>
    this.bar = true;
  }
}

export default foo;

/**
 *
 */
function quux () {
}
// Options: [{"forceReturnsWithAsync":true}]

/**
 * @type {MyCallback}
 */
function quux () {

}
// Options: [{"exemptedBy":["type"]}]

/**
 * @param {array} a
 */
async function foo(a) {
  return;
}

/**
 *
 */
// Options: [{"contexts":["any"]}]

/**
 * @async
 */
// Options: [{"contexts":["any"]}]

/**
 * @function
 */
// Options: [{"forceRequireReturn":true}]

/**
 * @callback
 */
// Options: [{"forceRequireReturn":true}]

/**
 * @function
 * @async
 */
// Options: [{"forceReturnsWithAsync":true}]

/**
 * @callback
 * @async
 */
// Options: [{"forceReturnsWithAsync":true}]

/**
 * @function
 */
// Options: [{"contexts":["any"],"forceReturnsWithAsync":true}]

/**
 * @callback
 */
// Options: [{"contexts":["any"],"forceReturnsWithAsync":true}]

class foo {
  get bar() {
    return 0;
  }
}
// Options: [{"checkGetters":false}]

class foo {
  /** @returns zero */
  get bar() {
    return 0;
  }
}
// Options: [{"checkGetters":true}]

class foo {
  /** @returns zero */
  get bar() {
    return 0;
  }
}
// Options: [{"checkGetters":false}]

class TestClass {
  /**
   *
   */
  constructor() { }
}

class TestClass {
  /**
   * @returns A map.
   */
  constructor() {
    return new Map();
  }
}

class TestClass {
  /**
   *
   */
  constructor() { }
}
// Options: [{"checkConstructors":false}]

class TestClass {
  /**
   *
   */
  get Test() { }
}

class TestClass {
  /**
   * @returns A number.
   */
  get Test() {
    return 0;
  }
}

class TestClass {
  /**
   *
   */
  get Test() {
    return 0;
  }
}
// Options: [{"checkGetters":false}]

/**
 *
 */
function quux (foo) {

  return new Promise(function (resolve, reject) {
    resolve();
  });
}

/**
 *
 */
function quux (foo) {

  return new Promise(function (resolve, reject) {
    setTimeout(() => {
      resolve();
    });
  });
}

/**
 *
 */
function quux (foo) {

  return new Promise(function (resolve, reject) {
    foo();
  });
}

/**
 *
 */
function quux (foo) {

  return new Promise(function (resolve, reject) {
    abc((resolve) => {
      resolve(true);
    });
  });
}

/**
 *
 */
function quux (foo) {

  return new Promise(function (resolve, reject) {
    abc(function (resolve) {
      resolve(true);
    });
  });
}

/**
 *
 */
function quux () {
  return new Promise((resolve, reject) => {
    if (true) {
      resolve();
    }
  });
  return;
}

/**
 *
 */
function quux () {
  return new Promise();
}

/**
 * Description.
 */
async function foo() {
  return new Promise(resolve => resolve());
}

`require-throws`

Requires that throw statements are documented.

Options

exemptedBy - Array of tags (e.g., ['type']) whose presence on the document block avoids the need for a @throws. Defaults to an array with inheritdoc. If you set this array, it will overwrite the default, so be sure to add back inheritdoc if you wish its presence to cause exemption of the rule.
contexts - Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface).

'jsdoc/require-throws': 'error',


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled
Tags	`throws`
Aliases	`exception`
Recommended	true
Options	`contexts`, `exemptedBy`
Settings	`overrideReplacesDocs`, `augmentsExtendsReplacesDocs`, `implementsReplacesDocs`

The following patterns are considered problems:

/**
 *
 */
function quux (foo) {
  throw new Error('err')
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
const quux = function (foo) {
  throw new Error('err')
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
const quux = (foo) => {
  throw new Error('err')
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  while(true) {
    throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  do {
    throw new Error('err')
  } while(true)
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  for(var i = 0; i <= 10; i++) {
    throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  for(num in [1,2,3]) {
    throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  for(const num of [1,2,3]) {
    throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  for(const index in [1,2,3]) {
    throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  with(foo) {
    throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  if (true) {
    throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  if (false) {
    // do nothing
  } else {
    throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  try {
    throw new Error('err')
  } catch(e) {
    throw new Error(e.message)
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  try {
    // do nothing
  } finally {
    throw new Error(e.message)
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 *
 */
function quux (foo) {
  const a = 'b'
  switch(a) {
    case 'b':
      throw new Error('err')
  }
}
// Message: Missing JSDoc @throws declaration.

/**
 * @throws
 */
function quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"throws":false}}}
// Message: Unexpected tag `@throws`

/**
 *
 */
const directThrowAfterArrow = (b) => {
  const a = () => {};
  if (b) {
    throw new Error('oops')
  }
  return a;
};
// Message: Missing JSDoc @throws declaration.

The following patterns are not considered problems:

/**
 * @throws An error.
 */
function quux () {
  throw new Error('err')
}

/**
 *
 */
function quux (foo) {
  try {
    throw new Error('err')
  } catch(e) {}
}

/**
 * @inheritdoc
 */
function quux (foo) {
  throw new Error('err')
}

/**
 * @abstract
 */
function quux (foo) {
  throw new Error('err')
}

/**
 *
 */
function quux (foo) {
}

/**
 * @type {MyCallback}
 */
function quux () {
  throw new Error('err')
}
// Options: [{"exemptedBy":["type"]}]

/**
 *
 */
const itself = (n) => n;

/**
 * Not tracking on nested function
 */
const nested = () => () => {throw new Error('oops');};

`require-yields`

Requires that yields are documented.

Will also report if multiple @yields tags are present.

See the next, forceRequireNext, and nextWithGeneratorTag options for an option to expect a non-standard @next tag.

Options

exemptedBy - Array of tags (e.g., ['type']) whose presence on the document block avoids the need for a @yields. Defaults to an array with inheritdoc. If you set this array, it will overwrite the default, so be sure to add back inheritdoc if you wish its presence to cause exemption of the rule.
forceRequireYields - Set to true to always insist on @yields documentation for generators even if there are only expressionless yield statements in the function. May be desired to flag that a project is aware of an undefined/void yield. Defaults to false.
contexts - Set this to an array of strings representing the AST context where you wish the rule to be applied. Overrides the default contexts (see below). Set to "any" if you want the rule to apply to any jsdoc block throughout your files (as is necessary for finding function blocks not attached to a function declaration or expression, i.e., @callback or @function (or its aliases @func or @method) (including those associated with an @interface). This rule will only apply on non-default contexts when there is such a tag present and the forceRequireYields option is set or if the withGeneratorTag option is set with a present @generator tag (since we are not checking against the actual yield values in these cases).
withGeneratorTag - If a @generator tag is present on a block, require @yields/@yield. Defaults to true. See contexts to any if you want to catch @generator with @callback or such not attached to a function.
next - If true, this option will insist that any use of a yield return value (e.g., const rv = yield; or const rv = yield value;) has a (non-standard) @next tag (in addition to any @yields tag) so as to be able to document the type expected to be supplied into the iterator (the Generator iterator that is returned by the call to the generator function) to the iterator (e.g., it.next(value)). The tag will not be expected if the generator function body merely has plain yield; or yield value; statements without returning the values. Defaults to false.
forceRequireNext - Set to true to always insist on @next documentation even if there are no yield statements in the function or none return values. May be desired to flag that a project is aware of the expected yield return being undefined. Defaults to false.
nextWithGeneratorTag - If a @generator tag is present on a block, require (non-standard ) @next (see next option). This will require using void or undefined in cases where generators do not use the next()-supplied incoming yield-returned value. Defaults to false. See contexts to any if you want to catch @generator with @callback or such not attached to a function.


Context	Generator functions (`FunctionDeclaration`, `FunctionExpression`; others when `contexts` option enabled)
Tags	`yields`
Aliases	`yield`
Recommended	true
Options	`contexts`, `exemptedBy`, `withGeneratorTag`, `nextWithGeneratorTag`, `forceRequireYields`, `next`
Settings	`overrideReplacesDocs`, `augmentsExtendsReplacesDocs`, `implementsReplacesDocs`

The following patterns are considered problems:

/**
 *
 */
function * quux (foo) {

  yield foo;
}
// Message: Missing JSDoc @yields declaration.

/**
 * @yields
 */
function * quux (foo) {

  const retVal = yield foo;
}
// Options: [{"next":true}]
// Message: Missing JSDoc @next declaration.

/**
 * @yields
 */
function * quux (foo) {

  const retVal = yield;
}
// Options: [{"next":true}]
// Message: Missing JSDoc @next declaration.

/**
 * @yields {void}
 */
function * quux () {
}
// Options: [{"forceRequireNext":true}]
// Message: Missing JSDoc @next declaration.

/**
 * @yields {void}
 */
function * quux () {
  yield;
}
// Options: [{"forceRequireNext":true}]
// Message: Missing JSDoc @next declaration.

/**
 *
 */
function * quux (foo) {

  const a = yield foo;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux (foo) {
  yield foo;
}
// Settings: {"jsdoc":{"tagNamePreference":{"yields":"yield"}}}
// Message: Missing JSDoc @yield declaration.

/**
 * @yields
 */
function * quux (foo) {
  const val = yield foo;
}
// Settings: {"jsdoc":{"tagNamePreference":{"next":"yield-returns"}}}
// Options: [{"next":true}]
// Message: Missing JSDoc @yield-returns declaration.

/**
 * @yields
 * @next
 */
function * quux () {
  const ret = yield 5;
}
// Settings: {"jsdoc":{"tagNamePreference":{"next":false}}}
// Options: [{"next":true}]
// Message: Unexpected tag `@next`

/**
 *
 */
function * quux() {
  yield 5;
}
// Options: [{"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux() {
  yield;
}
// Options: [{"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
const quux = async function * () {
  yield;
}
// Options: [{"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
async function * quux () {
  yield;
}
// Options: [{"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  yield;
}
// Options: [{"contexts":["any"],"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 * @function
 * @generator
 */
// Options: [{"contexts":["any"],"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 * @callback
 * @generator
 */
// Options: [{"contexts":["any"],"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 * @yields {undefined}
 * @yields {void}
 */
function * quux (foo) {

  return foo;
}
// Message: Found more than one @yields declaration.

/**
 * @yields
 */
function * quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"yields":false}}}
// Message: Unexpected tag `@yields`

/**
 * @param foo
 */
function * quux (foo) {
  yield 'bar';
}
// Options: [{"exemptedBy":["notPresent"]}]
// Message: Missing JSDoc @yields declaration.

/**
 * @param {array} a
 */
async function * foo(a) {
  return;
}
// Options: [{"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 * @param {array} a
 */
async function * foo(a) {
  yield Promise.all(a);
}
// Options: [{"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

class quux {
  /**
   *
   */
  * quux () {
    yield;
  }
}
// Options: [{"contexts":["any"],"forceRequireYields":true}]
// Message: Missing JSDoc @yields declaration.

/**
 * @param {array} a
 */
async function * foo(a) {
  yield Promise.all(a);
}
// Message: Missing JSDoc @yields declaration.

/**
 * @generator
 */
// Options: [{"contexts":["any"],"withGeneratorTag":true}]
// Message: Missing JSDoc @yields declaration.

/**
 * @generator
 * @yields
 */
// Options: [{"contexts":["any"],"nextWithGeneratorTag":true}]
// Message: Missing JSDoc @next declaration.

/**
 *
 */
function * quux () {
  if (true) {
    yield;
  }
  yield true;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  try {
    yield true;
  } catch (err) {
  }
  yield;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  try {
  } finally {
    yield true;
  }
  yield;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  try {
    yield;
  } catch (err) {
  }
  yield true;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  try {
    something();
  } catch (err) {
    yield true;
  }
  yield;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  switch (true) {
  case 'abc':
    yield true;
  }
  yield;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  switch (true) {
  case 'abc':
    yield;
  }
  yield true;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  for (const i of abc) {
    yield true;
  }
  yield;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  for (const a in b) {
    yield true;
  }
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  for (let i=0; i<n; i+=1) {
    yield true;
  }
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  while(true) {
    yield true
  }
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  do {
    yield true
  }
  while(true)
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  if (true) {
    yield;
  }
  yield true;
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  if (true) {
    yield true;
  }
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  var a = {};
  with (a) {
    yield true;
  }
}
// Message: Missing JSDoc @yields declaration.

/**
 *
 */
function * quux () {
  if (true) {
    yield;
  } else {
    yield true;
  }
  yield;
}
// Message: Missing JSDoc @yields declaration.

The following patterns are not considered problems:

/**
 * @yields Foo.
 */
function * quux () {

  yield foo;
}

/**
 * @yields Foo.
 */
function * quux () {

  yield foo;
}
// Options: [{"contexts":["any"]}]

/**
 *
 */
function * quux () {
}

/**
 *
 */
function * quux () {
  yield;
}

/**
 *
 */
function quux (bar) {
  bar.doSomething(function * (baz) {
    yield baz.corge();
  })
}

/**
 * @yields {Array}
 */
function * quux (bar) {
  yield bar.doSomething(function * (baz) {
    yield baz.corge();
  })
}

/**
 * @inheritdoc
 */
function * quux (foo) {
}

/**
 * @override
 */
function * quux (foo) {
}

/**
 * @constructor
 */
function * quux (foo) {
}

/**
 * @implements
 */
function * quux (foo) {
  yield;
}

/**
 * @override
 */
function * quux (foo) {

  yield foo;
}

/**
 * @class
 */
function * quux (foo) {
  yield foo;
}

/**
 * @constructor
 */
function * quux (foo) {
}

/**
 * @yields {object}
 */
function * quux () {

  yield {a: foo};
}

/**
 * @yields {void}
 */
function * quux () {
}

/**
 * @yields {undefined}
 */
function * quux () {
}

/**
 *
 */
function * quux () {
}

/**
 * @yields {void}
 */
function quux () {
}
// Options: [{"forceRequireYields":true}]

/**
 * @yields {void}
 * @next {void}
 */
function * quux () {
}
// Options: [{"forceRequireNext":true}]

/**
 * @yields {void}
 */
function * quux () {
  yield undefined;
}

/**
 * @yields {void}
 */
function * quux () {
  yield undefined;
}
// Options: [{"forceRequireYields":true}]

/**
 * @yields {void}
 */
function * quux () {
  yield;
}

/**
 * @yields {void}
 */
function * quux () {
}
// Options: [{"forceRequireYields":true}]

/**
 * @yields {void}
 */
function * quux () {
  yield;
}
// Options: [{"forceRequireYields":true}]

/** @type {SpecialIterator} */
function * quux () {
  yield 5;
}

/**
 * @yields {Something}
 */
async function * quux () {
}
// Options: [{"forceRequireYields":true}]

/**
 *
 */
async function * quux () {}

/**
 *
 */
const quux = async function * () {}

/**
 * @type {MyCallback}
 */
function * quux () {
  yield;
}
// Options: [{"exemptedBy":["type"]}]

/**
 * @param {array} a
 */
async function * foo (a) {
  yield;
}

/**
 *
 */
// Options: [{"contexts":["any"]}]

/**
 * @function
 */
// Options: [{"contexts":["any"]}]

/**
 * @function
 */
// Options: [{"forceRequireYields":true}]

/**
 * @callback
 */
// Options: [{"forceRequireYields":true}]

/**
 * @generator
 */
// Options: [{"withGeneratorTag":true}]

/**
 * @generator
 */
// Options: [{"nextWithGeneratorTag":true}]

/**
 * @generator
 * @yields
 */
// Options: [{"contexts":["any"],"withGeneratorTag":true}]

/**
 * @generator
 * @yields
 * @next
 */
// Options: [{"contexts":["any"],"nextWithGeneratorTag":true}]

/**
 * @generator
 */
// Options: [{"contexts":["any"],"withGeneratorTag":false}]

/**
 * @generator
 * @yields
 */
// Options: [{"contexts":["any"],"nextWithGeneratorTag":false}]

/**
 * @yields
 */
function * quux (foo) {

  const a = yield foo;
}

/**
 * @yields
 * @next
 */
function * quux (foo) {
  let a = yield;
}
// Options: [{"next":true}]

/**
 * @yields
 * @next
 */
function * quux (foo) {
  const a = yield foo;
}
// Options: [{"next":true}]

/**
 *
 */
// Options: [{"contexts":["any"],"nextWithGeneratorTag":true}]

/**
 *
 */
// Options: [{"contexts":["any"],"next":true}]

/**
 *
 */
function quux () {}
// Options: [{"contexts":["any"],"next":true}]

/**
 * @yields {void}
 */
function * quux () {
  yield;
}
// Options: [{"next":true}]

/**
 *
 */
function * quux (foo) {
  const a = function * bar () {
    yield foo;
  }
}

`require-yields-check`

Ensures that if a @yields is present that a yield (or yield with a value) is present in the function body (or that if a @next is present that there is a yield with a return value present).

Please also note that JavaScript does allow generators not to have yield (e.g., with just a return or even no explicit return), but if you want to enforce that all generators (except wholly empty ones) have a yield in the function body, you can use the ESLint require-yield rule. In conjunction with this, you can also use the checkGeneratorsOnly option as an optimization so that this rule won't need to do its own checking within function bodies.

Will also report if multiple @yields tags are present.

Options

checkGeneratorsOnly - Avoids checking the function body and merely insists that all generators have @yields. This can be an optimization with the ESLint require-yield rule, as that rule already ensures a yield is present in generators, albeit assuming the generator is not empty). Defaults to false.
next - If true, this option will insist that any use of a (non-standard) @next tag (in addition to any @yields tag) will be matched by a yield which uses a return value in the body of the generator (e.g., const rv = yield; or const rv = yield value;). This (non-standard) tag is intended to be used to indicate a type and/or description of the value expected to be supplied by the user when supplied to the iterator by its next method, as with it.next(value) (with the iterator being the Generator iterator that is returned by the call to the generator function). This option will report an error if the generator function body merely has plain yield; or yield value; statements without returning the values. Defaults to false.


Context	`ArrowFunctionExpression`, `FunctionDeclaration`, `FunctionExpression`
Tags	`yields`
Aliases	`yield`
Recommended	true
Options	`checkGeneratorsOnly`
The following patterns are considered problems:

/**
 * @yields
 */
function * quux (foo) {

}
// Message: JSDoc @yields declaration present but yield expression not available in function.

/**
 * @yields
 */
function quux (foo) {

}
// Options: [{"checkGeneratorsOnly":true}]
// Message: JSDoc @yields declaration present but yield expression not available in function.

/**
 * @next
 */
function quux (foo) {

}
// Options: [{"checkGeneratorsOnly":true,"next":true}]
// Message: JSDoc @next declaration present but yield expression with return value not available in function.

/**
 * @next {SomeType}
 */
function * quux (foo) {

}
// Options: [{"next":true}]
// Message: JSDoc @next declaration present but yield expression with return value not available in function.

/**
 * @next {SomeType}
 */
function * quux (foo) {
  yield;
}
// Options: [{"next":true}]
// Message: JSDoc @next declaration present but yield expression with return value not available in function.

/**
 * @next {SomeType}
 */
function * quux (foo) {
  yield 5;
}
// Options: [{"next":true}]
// Message: JSDoc @next declaration present but yield expression with return value not available in function.

/**
 * @yield
 */
function * quux (foo) {

}
// Settings: {"jsdoc":{"tagNamePreference":{"yields":"yield"}}}
// Message: JSDoc @yield declaration present but yield expression not available in function.

/**
 * @yield-returns {Something}
 */
function * quux (foo) {
  yield;
}
// Settings: {"jsdoc":{"tagNamePreference":{"next":"yield-returns"}}}
// Options: [{"next":true}]
// Message: JSDoc @yield-returns declaration present but yield expression with return value not available in function.

/**
 * @yields {undefined} Foo.
 * @yields {String} Foo.
 */
function * quux () {

  yield foo;
}
// Message: Found more than one @yields declaration.

class Foo {
  /**
   * @yields {string}
   */
  * bar () {
  }
}
// Message: JSDoc @yields declaration present but yield expression not available in function.

/**
 * @yields
 */
function * quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"yields":false}}}
// Message: Unexpected tag `@yields`

/**
 * @next
 */
function * quux () {

}
// Settings: {"jsdoc":{"tagNamePreference":{"next":false}}}
// Options: [{"next":true}]
// Message: Unexpected tag `@next`

/**
 * @yields {string}
 */
function * f () {
  function * g() {
    yield 'foo'
  }
}
// Message: JSDoc @yields declaration present but yield expression not available in function.

/**
 * @yields {Promise<void>}
 */
async function * quux() {}
// Message: JSDoc @yields declaration present but yield expression not available in function.

/**
 * @yields {Promise<void>}
 */
const quux = async function * () {}
// Message: JSDoc @yields declaration present but yield expression not available in function.

The following patterns are not considered problems:

/**
 * @yields Foo.
 */
function * quux () {

  yield foo;
}

/**
 * @yields {string} Foo.
 */
function * quux () {

  yield foo;
}

/**
 * @yields {string} Foo.
 */
function * quux () {

  yield foo;
}

/**
 *
 */
function * quux () {
}

/**
 * @yields {undefined} Foo.
 */
function * quux () {}

/**
 * @yields { void } Foo.
 */
function quux () {}

/**
 * @yields Foo.
 * @abstract
 */
function * quux () {
  throw new Error('must be implemented by subclass!');
}

/**
 * @yields Foo.
 * @virtual
 */
function * quux () {
  throw new Error('must be implemented by subclass!');
}

/**
 * @yields Foo.
 * @constructor
 */
function * quux () {
}

/**
 * @interface
 */
class Foo {
  /**
   * @yields {string}
   */
  * bar () {
  }
}

/**
 * @record
 */
class Foo {
  /**
   * @yields {string}
   */
  * bar () {
  }
}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @yields {undefined} Foo.
 */
function * quux () {
}

/**
 * @yields {void} Foo.
 */
function * quux () {
}

/**
 * @yields {void} Foo.
 */
function * quux () {
  yield undefined;
}

/**
 * @yields {void} Foo.
 */
function * quux () {
  yield;
}

/**
 *
 */
function * quux () {
  yield undefined;
}

/**
 *
 */
function * quux () {
  yield;
}

/**
 * @yields {true}
 */
function * quux () {
  try {
    yield true;
  } catch (err) {
  }
  yield;
}

/**
 * @yields {true}
 */
function * quux () {
  try {
  } finally {
    yield true;
  }
  yield;
}

/**
 * @yields {true}
 */
function * quux () {
  try {
    yield;
  } catch (err) {
  }
  yield true;
}

/**
 * @yields {true}
 */
function * quux () {
  try {
    something();
  } catch (err) {
    yield true;
  }
  yield;
}

/**
 * @yields {true}
 */
function * quux () {
  switch (true) {
  case 'abc':
    yield true;
  }
  yield;
}

/**
 * @yields {true}
 */
function * quux () {
  switch (true) {
  case 'abc':
    yield;
  }
  yield true;
}

/**
 * @yields {true}
 */
function * quux () {
  for (const i of abc) {
    yield true;
  }
  yield;
}

/**
 * @yields {true}
 */
function * quux () {
  for (const a in b) {
    yield true;
  }
}

/**
 * @yields {true}
 */
function * quux () {
  for (let i=0; i<n; i+=1) {
    yield true;
  }
}

/**
 * @yields {true}
 */
function * quux () {
  while(true) {
    yield true
  }
}

/**
 * @yields {true}
 */
function * quux () {
  do {
    yield true
  }
  while(true)
}

/**
 * @yields {true}
 */
function * quux () {
  if (true) {
    yield;
  }
  yield true;
}

/**
 * @yields {true}
 */
function * quux () {
  if (true) {
    yield true;
  }
}

/**
 * @yields {true}
 */
function * quux () {
  var a = {};
  with (a) {
    yield true;
  }
}

/**
 * @yields {true}
 */
function * quux () {
  if (true) {
    yield;
  } else {
    yield true;
  }
  yield;
}

/**
 * @next {void}
 */
function * quux (foo) {

}
// Options: [{"next":true}]

/**
 * @next {SomeType}
 */
function * quux (foo) {
  const a = yield;
}
// Options: [{"next":true}]

/**
 * @next {SomeType}
 */
function * quux (foo) {
  const a = yield 5;
}
// Options: [{"next":true}]

`valid-types`

Requires all types to be valid JSDoc, Closure, or TypeScript compiler types without syntax errors. Note that what determines a valid type is handled by our type parsing engine, jsdoctypeparser, using settings.jsdoc.mode to determine whether to use jsdoctypeparser's "permissive" mode or the stricter "jsdoc", "typescript", "closure" modes.

The following tags have their "type" portions (the segment within brackets) checked (though those portions may sometimes be confined to namepaths, e.g., @modifies):

Tags with required types: @type, @implements
Tags with required types in Closure or TypeScript: @this, @define (Closure only)
Tags with optional types: @enum, @member (@var), @typedef, @augments (or @extends), @class (or @constructor), @constant (or @const), @module (module paths are not planned for TypeScript), @namespace, @throws, @exception, @yields (or @yield), @modifies (undocumented jsdoc); @param (@arg, @argument), @property (@prop), and @returns (@return) also fall into this category, but while this rule will check their type validity, we leave the requiring of the type portion to the rules require-param-type, require-property-type, and require-returns-type, respectively.
Tags with types that are available optionally in Closure: @export, @package, @private, @protected, @public, @static; @template (TypeScript also)
Tags with optional types that may take free text instead: @throws

The following tags have their name/namepath portion (the non-whitespace text after the tag name) checked:

Name(path)-defining tags requiring namepath: @event, @callback, @external, @host, @name, @typedef, and @template (TypeScript/Closure only); @param (@arg, @argument) and @property (@prop) also fall into this category, but while this rule will check their namepath validity, we leave the requiring of the name portion to the rules require-param-name and require-property-name, respectively.
Name(path)-defining tags (which may have value without namepath or their namepath can be expressed elsewhere on the block): @class, @constructor, @constant, @const, @function, @func, @method, @interface (TypeScript tag only), @member, @var, @mixin, @namespace, @module (module paths are not planned for TypeScript)
Name(path)-pointing tags requiring namepath: @alias, @augments, @extends, @lends, @memberof, @memberof!, @mixes, @this (jsdoc only)
Name(path)-pointing tags (which may have value without namepath or their namepath can be expressed elsewhere on the block): @listens, @fires, @emits.
Name(path)-pointing tags which may have free text or a namepath: @see
Name(path)-pointing tags (multiple names in one): @borrows

...with the following applying to the above sets:

Expect tags in set 1-4 to have a valid namepath if present
Prevent sets 2 and 4 from being empty by setting allowEmptyNamepaths to false as these tags might have some indicative value without a path or may allow a name expressed elsewhere on the block (but sets 1 and 3 will always fail if empty)
For the special case of set 6, i.e., @borrows <that namepath> as <this namepath>, check that both namepaths are present and valid and ensure there is an as between them. In the case of <this namepath>, it can be preceded by one of the name path operators, #, ., or ~.
For the special case of @memberof and @memberof! (part of set 3), as per the specification, they also allow #, ., or ~ at the end (which is not allowed at the end of normal paths).

If you define your own tags, settings.jsdoc.structuredTags will allow these custom tags to be checked, with the name portion of tags checked for valid namepaths (based on the tag's name value), their type portions checked for valid types (based on the tag's type value), and either portion checked for presence (based on false name or type values or their required value). See the setting for more details.

Options

allowEmptyNamepaths (default: true) - Set to false to bulk disallow empty name paths with namepath groups 2 and 4 (these might often be expected to have an accompanying name path, though they have some indicative value without one; these may also allow names to be defined in another manner elsewhere in the block); you can use settings.jsdoc.structuredTags with the required key set to "name" if you wish to require name paths on a tag-by-tag basis.


Context	everywhere
Tags	For name only unless otherwise stated: `alias`, `augments`, `borrows`, `callback`, `class` (for name and type), `constant` (for name and type), `enum` (for type), `event`, `external`, `fires`, `function`, `implements` (for type), `interface`, `lends`, `listens`, `member` (for name and type), `memberof`, `memberof!`, `mixes`, `mixin`, `modifies`, `module` (for name and type), `name`, `namespace` (for name and type), `param` (for name and type), `property` (for name and type), `returns` (for type), `see` (optionally for name), `this`, `throws` (for type), `type` (for type), `typedef` (for name and type), `yields` (for type)
Aliases	`extends`, `constructor`, `const`, `host`, `emits`, `func`, `method`, `var`, `arg`, `argument`, `prop`, `return`, `exception`, `yield`
Closure-only	For type only: `package`, `private`, `protected`, `public`, `static`
Recommended	true
Options	`allowEmptyNamepaths`
Settings	`mode`, `structuredTags`

The following patterns are considered problems:

/**
 * @param {Array<string} foo
 */
function quux() {

}
// Message: Syntax error in type: Array<string

/**
 * @memberof module:namespace.SomeClass<~
 */
function quux() {

}
// Message: Syntax error in namepath: module:namespace.SomeClass<~

/**
 * @param someParam<~
 */
function quux() {

}
// Message: Syntax error in namepath: someParam<~

/**
 * @memberof module:namespace.SomeClass~<
 */
function quux() {

}
// Message: Syntax error in namepath: module:namespace.SomeClass~<

/**
 * @borrows foo% as bar
 */
function quux() {

}
// Message: Syntax error in namepath: foo%

/**
 * @borrows #foo as bar
 */
function quux() {

}
// Message: Syntax error in namepath: #foo

/**
 * @borrows foo as bar%
 */
function quux() {

}
// Message: Syntax error in namepath: bar%

/**
 * @borrows foo
 */
function quux() {

}
// Message: @borrows must have an "as" expression. Found ""

/**
 * @see foo%
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"name":"namepath-referencing","required":["name"]}}}}
// Message: Syntax error in namepath: foo%

/**
 * @alias module:abc#event:foo-bar
 */
function quux() {

}
// Message: Syntax error in namepath: module:abc#event:foo-bar

/**
 * @mixes module:namespace.SomeClass~
 */
function quux() {

}
// Message: Syntax error in namepath: module:namespace.SomeClass~

/**
 * @callback
 */
function quux() {

}
// Options: [{"allowEmptyNamepaths":false}]
// Message: Tag @callback must have a name/namepath.

/**
 * @constant {str%ng}
 */
 const FOO = 'foo';
// Message: Syntax error in type: str%ng

/**
 * @typedef {str%ng} UserString
 */
// Message: Syntax error in type: str%ng

/**
 * @typedef {string} UserStr%ng
 */
// Message: Syntax error in namepath: UserStr%ng

/**
 * @this
 */
 class Bar {};
// Options: [{"allowEmptyNamepaths":false}]
// Message: Tag @this must have either a type or namepath in "jsdoc" mode.

/**
 * @aCustomTag
 */
// Settings: {"jsdoc":{"structuredTags":{"aCustomTag":{"required":["typeOrNameRequired"]}}}}
// Options: [{"allowEmptyNamepaths":false}]
// Message: Tag @aCustomTag must have either a type or namepath.

/**
 * @type
 */
 let foo;
// Message: Tag @type must have a type.

/**
 * @modifies {bar | foo<}
 */
function quux (foo, bar, baz) {}
// Message: Syntax error in type: bar | foo<

/**
 * @private {BadTypeChecked<}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Syntax error in type: BadTypeChecked<

/**
 * @this {BadTypeChecked<}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Syntax error in type: BadTypeChecked<

/**
 * @define
 */
 function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Tag @define must have a type in "closure" mode.

/**
 * @this
 */
 let foo;
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Tag @this must have a type in "closure" mode.

/**
 * Foo function.
 *
 * @param {[number, string]} bar - The bar array.
 */
function foo(bar) {}
// Settings: {"jsdoc":{"mode":"jsdoc"}}
// Message: Syntax error in type: [number, string]

/**
 * @interface name<
 */
// Settings: {"jsdoc":{"mode":"jsdoc"}}
// Message: Syntax error in namepath: name<

/**
 * @module name<
 */
// Settings: {"jsdoc":{"mode":"jsdoc"}}
// Message: Syntax error in namepath: name<

/**
 * @module module:name<
 */
// Settings: {"jsdoc":{"mode":"jsdoc"}}
// Message: Syntax error in namepath: module:name<

/**
 * @interface name
 */
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: @interface should not have a name in "closure" mode.

/**
 * @aCustomTag name
 */
// Settings: {"jsdoc":{"structuredTags":{"aCustomTag":{"name":false}}}}
// Message: @aCustomTag should not have a name.

/**
 * @typedef {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"jsdoc"}}
// Options: [{"allowEmptyNamepaths":false}]
// Message: Tag @typedef must have a name/namepath in "jsdoc" mode.

/**
 * @private {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"jsdoc"}}
// Message: @private should not have a bracketed type in "jsdoc" mode.

/**
 * @aCustomTag {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"structuredTags":{"aCustomTag":{"type":false}}}}
// Message: @aCustomTag should not have a bracketed type.

/**
 * @see foo%
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"name":false,"required":["name"]}}}}
// Message: Cannot add "name" to `require` with the tag's `name` set to `false`

/**
 * @see foo%
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"required":["type"],"type":false}}}}
// Message: Cannot add "type" to `require` with the tag's `type` set to `false`

/**
 * @see foo%
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"name":false,"required":["typeOrNameRequired"]}}}}
// Message: Cannot add "typeOrNameRequired" to `require` with the tag's `name` set to `false`

/**
 * @see foo%
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"required":["typeOrNameRequired"],"type":false}}}}
// Message: Cannot add "typeOrNameRequired" to `require` with the tag's `type` set to `false`

/**
 * @template T<~, R
 * @param {function(!T): !R} parser
 * @return {function(!Array<!T>): !Array<!R>}
 */
parseArray = function(parser) {
    return function(array) {
        return array.map(parser);
    };
};
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Syntax error in namepath: T<~

/**
 * @template T, R<~
 * @param {function(!T): !R} parser
 * @return {function(!Array<!T>): !Array<!R>}
 */
parseArray = function(parser) {
    return function(array) {
        return array.map(parser);
    };
};
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Syntax error in namepath: R<~

/**
 * @template    T, R<~
 * @param {function(!T): !R} parser
 * @return {function(!Array<!T>): !Array<!R>}
 */
parseArray = function(parser) {
    return function(array) {
        return array.map(parser);
    };
};
// Settings: {"jsdoc":{"mode":"closure"}}
// Message: Syntax error in namepath: R<~

The following patterns are not considered problems:

/**
 * @param {Array<string>} foo
 */
function quux() {

}

/**
 * @param {string} foo
 */
function quux() {

}

/**
 * @param foo
 */
function quux() {

}

/**
 * @borrows foo as bar
 */
function quux() {

}

/**
 * @borrows foo as #bar
 */
function quux() {

}

/**
 * @see foo%
 */
function quux() {

}

/**
 * @alias module:namespace.SomeClass#event:ext_anevent
 */
function quux() {

}

/**
 * @callback foo
 */
function quux() {

}

/**
 * @callback
 */
function quux() {

}
// Options: [{"allowEmptyNamepaths":true}]

/**
 * @class
 */
function quux() {

}

/**
 * @see {@link foo}
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"name":"namepath-referencing","required":["name"]}}}}

/**
 *
 * @fires {module:namespace.SomeClass#event:ext_anevent}
 */
function quux() {

}

/**
 * @memberof module:namespace.SomeClass~
 */
function quux() {

}

/**
 * @memberof! module:namespace.SomeClass.
 */
function quux() {

}

/**
 *
 */
function quux() {

}

/**
 * @aCustomTag
 */
function quux() {

}

/**
 * @constant {string}
 */
 const FOO = 'foo';

/**
 * @constant {string} FOO
 */
 const FOO = 'foo';

/**
 * @extends Foo
 */
 class Bar {};

/**
 * @extends Foo<String>
 */
 class Bar {};

/**
 * @extends {Foo<String>}
 */
 class Bar {};
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @typedef {number | string} UserDefinedType
 */

/**
 * @typedef {number | string}
 */
let UserDefinedGCCType;
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @modifies {foo | bar}
 */
function quux (foo, bar, baz) {}

/**
 * @this {Navigator}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @export {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @define {boolean}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @define
 */
 function quux () {}

/**
 * Foo function.
 *
 * @interface foo
 */
function foo(bar) {}
// Settings: {"jsdoc":{"mode":"typescript"}}

/**
 * Foo function.
 *
 * @param {[number, string]} bar - The bar array.
 */
function foo(bar) {}
// Settings: {"jsdoc":{"mode":"typescript"}}

/**
 * Foo function.
 *
 * @param {[number, string]} bar - The bar array.
 */
function foo(bar) {}

/**
 * Foo function.
 *
 * @param {[number, string]} bar - The bar array.
 */
function foo(bar) {}
// Settings: {"jsdoc":{"mode":"permissive"}}

/**
 * @typedef {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}
// Options: [{"allowEmptyNamepaths":false}]

/**
 * @private {SomeType}
 */
function quux () {}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @param
 */
function quux() {

}
// Options: [{"allowEmptyNamepaths":false}]

/**
 * @see
 */
function quux() {

}
// Settings: {"jsdoc":{"structuredTags":{"see":{"name":"namepath-referencing"}}}}

/**
 * @template T, R
 * @param {function(!T): !R} parser
 * @return {function(!Array<!T>): !Array<!R>}
 */
parseArray = function(parser) {
    return function(array) {
        return array.map(parser);
    };
};
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * @template T, R<~
 * @param {function(!T): !R} parser
 * @return {function(!Array<!T>): !Array<!R>}
 */
parseArray = function(parser) {
    return function(array) {
        return array.map(parser);
    };
};
// Settings: {"jsdoc":{"mode":"jsdoc"}}

/**
 * @template {string} K - K must be a string or string literal
 * @template {{ serious: string }} Seriousalizable - must have a serious property
 * @param {K} key
 * @param {Seriousalizable} object
 */
function seriousalize(key, object) {
  // ????
}
// Settings: {"jsdoc":{"mode":"typescript"}}

/**
 * @module foo/bar
 */

/**
 * @module module:foo/bar
 */

/**
 * @template invalid namepath,T Description
 */
function f() {}
// Settings: {"jsdoc":{"mode":"closure"}}

/**
 * Description of complicated type.
 *
 * @template T Description of the T type parameter.
 * @template U - Like other tags, this can have an optional hyphen before the description.
 * @template V,W More parameters
 * @template W,X - Also with a hyphen
 */
type ComplicatedType<T, U, V, W, X> = never

/** Multi-line typedef for an options object type.
 *
 * @typedef {{
 *   prop: number
 * }} MyOptions
 */

License

wwwzbwcom/eslint-plugin-jsdoc

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