vuejs · haoqunjiang · Jan 14, 2025 · Dec 25, 2024 · Dec 25, 2024 · Dec 25, 2024
diff --git a/README.md b/README.md
@@ -25,19 +25,26 @@ Please also make sure that you have `typescript` and `eslint` installed.
 
 ## Usage
 
-Because of the complexity of this config, it is exported as a factory function that takes an options object and returns an ESLint configuration object.
+Because of the complexity of the configurations, this package exports several utilities:
+
+- `defineConfigWithVueTs`, a utility function whose type signature is the same as the [`config` function from `typescript-eslint`](https://typescript-eslint.io/packages/typescript-eslint#config), but will modify the given ESLint config to work with Vue.js + TypeScript.
+- `vueTsConfigs`, contains all the [shared configruations from `typescript-eslint`](https://typescript-eslint.io/users/configs) (in camelCase, e.g. `vueTsConfigs.recommendedTypeChecked`), and applies to `.vue` files in addition to TypeScript files.
+- a Vue-specific config factory: `configureVueProject({ scriptLangs, rootDir })`. More info below.
 
 ### Minimal Setup
 
 ```js
 // eslint.config.mjs
-import pluginVue from "eslint-plugin-vue";
-import vueTsEslintConfig from "@vue/eslint-config-typescript";
-
-export default [
-  ...pluginVue.configs["flat/essential"],
-  ...vueTsEslintConfig(),
-]
+import pluginVue from 'eslint-plugin-vue'
+import {
+  defineConfigWithVueTs,
+  vueTsConfigs,
+} from '@vue/eslint-config-typescript'
+
+export default defineConfigWithVueTs(
+  pluginVue.configs['flat/essential'],
+  vueTsConfigs.recommended,
+)
 ```
 
 The above configuration enables [the essential rules for Vue 3](https://eslint.vuejs.org/rules/#priority-a-essential-error-prevention) and [the recommended rules for TypeScript](https://typescript-eslint.io/rules/?=recommended).
@@ -48,58 +55,54 @@ All the `<script>` blocks in `.vue` files *MUST* be written in TypeScript (shoul
 
 ```js
 // eslint.config.mjs
-import pluginVue from "eslint-plugin-vue";
-import vueTsEslintConfig from "@vue/eslint-config-typescript";
-
-export default [
-  ...pluginVue.configs["flat/essential"],
-
-  ...vueTsEslintConfig({
-    // Optional: extend additional configurations from `typescript-eslint`.
-    // Supports all the configurations in
-    // https://typescript-eslint.io/users/configs#recommended-configurations
-    extends: [
-      // By default, only the recommended rules are enabled.
-      "recommended",
-      // You can also manually enable the stylistic rules.
-      // "stylistic",
-
-      // Other utility configurations, such as `eslintRecommended`, (note that it's in camelCase)
-      // are also extendable here. But we don't recommend using them directly.
-    ],
-
-    // Optional: specify the script langs in `.vue` files
-    // Defaults to `{ ts: true, js: false, tsx: false, jsx: false }`
-    supportedScriptLangs: {
-      ts: true,
-
-      // [!DISCOURAGED]
-      // Set to `true` to allow plain `<script>` or `<script setup>` blocks.
-      // This might result-in false positive or negatives in some rules for `.vue` files.
-      // Note you also need to configure `allowJs: true` and `checkJs: true`
-      // in corresponding `tsconfig.json` files.
-      js: false,
-
-      // [!STRONGLY DISCOURAGED]
-      // Set to `true` to allow `<script lang="tsx">` blocks.
-      // This would be in conflict with all type-aware rules.
-      tsx: false,
-
-      // [!STRONGLY DISCOURAGED]
-      // Set to `true` to allow `<script lang="jsx">` blocks.
-      // This would be in conflict with all type-aware rules and may result in false positives.
-      jsx: false,
-    },
-
-    // <https://github.com/vuejs/eslint-plugin-vue/issues/1910#issuecomment-1819993961>
-    // Optional: the root directory to resolve the `.vue` files, defaults to `process.cwd()`.
-    // You may need to set this to the root directory of your project if you have a monorepo.
-    // This is useful when you allow any other languages than `ts` in `.vue` files.
-    // Our config helper would resolve and parse all the `.vue` files under `rootDir`,
-    // and only apply the loosened rules to the files that do need them.
-    rootDir: import.meta.dirname,
-  })
-]
+import pluginVue from 'eslint-plugin-vue'
+import {
+  defineConfigWithVueTs,
+  vueTsConfigs,
+  configureVueProject,
+} from '@vue/eslint-config-typescript'
+
+configureVueProject({
+  // Optional: specify the script langs in `.vue` files
+  // Defaults to `['ts']`.
+  scriptLangs: [
+    'ts',
+
+    // [!DISCOURAGED]
+    // Include 'js' to allow plain `<script>` or `<script setup>` blocks.
+    // This might result-in false positive or negatives in some rules for `.vue` files.
+    // Note you also need to configure `allowJs: true` and `checkJs: true`
+    // in corresponding `tsconfig.json` files.
+    'js',
+
+    // [!STRONGLY DISCOURAGED]
+    // Include 'tsx' to allow `<script lang="tsx">` blocks.
+    // This would be in conflict with all type-aware rules.
+    'tsx',
+
+    // [!STRONGLY DISCOURAGED]
+    // Include 'jsx' to allow `<script lang="jsx">` blocks.
+    // This would be in conflict with all type-aware rules and may result in false positives.
+    'jsx',
+  ],
+
+  // <https://github.com/vuejs/eslint-plugin-vue/issues/1910#issuecomment-1819993961>
+  // Optional: the root directory to resolve the `.vue` files, defaults to `process.cwd()`.
+  // You may need to set this to the root directory of your project if you have a monorepo.
+  // This is useful when you allow any other languages than `ts` in `.vue` files.
+  // Our config helper would resolve and parse all the `.vue` files under `rootDir`,
+  // and only apply the loosened rules to the files that do need them.
+  rootDir: import.meta.dirname,
+})
+
+export default defineConfigWithVueTs(
+  pluginVue.configs["flat/essential"],
+
+  // We STRONGLY RECOMMEND you to start with `recommended` or `recommendedTypeChecked`.
+  // But if you are determined to configure all rules by yourself,
+  // you can start with `base`, and then turn on/off the rules you need.
+  vueTsConfigs.base,
+)
 ```
 
 ### Linting with Type Information
@@ -111,34 +114,26 @@ It is not always easy to set up the type-checking environment for ESLint without
 So we don't recommend you to configure individual type-aware rules and the corresponding language options all by yourself.
 Instead, you can start by extending from the `recommendedTypeChecked` configuration and then turn on/off the rules you need.
 
-As of now, all the rules you need to turn on must appear *before* calling `...vueTsEslintConfig({ extends: ['recommendedTypeChecked'] })`, and all the rules you need to turn off must appear *after* calling it.
-
 ```js
 // eslint.config.mjs
-import pluginVue from "eslint-plugin-vue";
-import vueTsEslintConfig from "@vue/eslint-config-typescript";
-
-export default [
-  ...pluginVue.configs["flat/essential"],
-
-  {
-    files: ['**/*.ts', '**/*.tsx', '**/*.mts', '**/*.vue'],
-    rules: {
-      // Turn on other rules that you need.
-      '@typescript-eslint/require-array-sort-compare': 'error'
-    }
-  },
-  ...vueTsEslintConfig({ extends: ['recommendedTypeChecked'] }),
-  {
-    files: ['**/*.ts', '**/*.tsx', '**/*.mts', '**/*.vue'],
-    rules: {
-      // Turn off the recommended rules that you don't need.
-      '@typescript-eslint/no-redundant-type-constituents': 'off',
-    }
-  }
-]
+import pluginVue from 'eslint-plugin-vue'
+import {
+  defineConfigWithVueTs,
+  vueTsConfigs,
+} from '@vue/eslint-config-typescript'
+
+export default defineConfigWithVueTs(
+  pluginVue.configs['flat/essential'],
+  vueTsConfigs.recommendedTypeChecked
+)
 ```
 
+## Use As a Normal Shared ESLint Config (Not Recommended)
+
+You can use this package as a normal ESLint config, without the `defineConfigWithVueTs` helper. But in this case, overriding the rules for `.vue` files would be more difficult and comes with many nuances. Please be cautious.
+
+You can check [the documentation for 14.1 and earlier versions](https://github.com/vuejs/eslint-config-typescript/tree/v14.1.4#usage) for more information.
+
 ## Further Reading
 
 - [All the extendable configurations from `typescript-eslint`](https://typescript-eslint.io/users/configs).

diff --git a/examples/allow-js/eslint.config.js b/examples/allow-js/eslint.config.js
@@ -1,7 +1,13 @@
-import pluginVue from "eslint-plugin-vue";
-import vueTsEslintConfig from "@vue/eslint-config-typescript";
+import pluginVue from 'eslint-plugin-vue'
+import {
+  defineConfigWithVueTs,
+  vueTsConfigs,
+  configureVueProject,
+} from '@vue/eslint-config-typescript'
 
-export default [
+configureVueProject({ scriptLangs: ['js', 'ts'] })
+
+export default defineConfigWithVueTs(
   {
     name: 'app/files-to-lint',
     files: ['**/*.js', '**/*.mjs', '**/*.ts', '**/*.mts', '**/*.vue'],
@@ -12,11 +18,6 @@ export default [
     ignores: ['**/dist/**', '**/dist-ssr/**', '**/coverage/**'],
   },
 
-  ...pluginVue.configs["flat/essential"],
-  ...vueTsEslintConfig({
-    supportedScriptLangs: {
-      ts: true,
-      js: true
-    }
-  }),
-]
+  pluginVue.configs['flat/essential'],
+  vueTsConfigs.recommended,
+)
diff --git a/examples/allow-js/package.json b/examples/allow-js/package.json
@@ -16,15 +16,15 @@
   },
   "devDependencies": {
     "@tsconfig/node20": "^20.1.4",
-    "@types/node": "^20.17.10",
+    "@types/node": "^20.17.12",
     "@vitejs/plugin-vue": "^5.2.1",
     "@vue/eslint-config-typescript": "workspace:*",
     "@vue/tsconfig": "^0.7.0",
-    "eslint": "^9.17.0",
+    "eslint": "^9.18.0",
     "eslint-plugin-vue": "^9.32.0",
     "npm-run-all2": "^7.0.2",
-    "typescript": "~5.6.3",
-    "vite": "^6.0.5",
-    "vue-tsc": "^2.1.10"
+    "typescript": "~5.7.3",
+    "vite": "^6.0.7",
+    "vue-tsc": "^2.2.0"
   }
 }
diff --git a/examples/api-before-14.3/.editorconfig b/examples/api-before-14.3/.editorconfig
@@ -0,0 +1,6 @@
+[*.{js,jsx,mjs,cjs,ts,tsx,mts,cts,vue}]
+charset = utf-8
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
diff --git a/examples/api-before-14.3/.gitignore b/examples/api-before-14.3/.gitignore
@@ -0,0 +1,30 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+.DS_Store
+dist
+dist-ssr
+coverage
+*.local
+
+/cypress/videos/
+/cypress/screenshots/
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+*.tsbuildinfo
diff --git a/examples/api-before-14.3/.prettierrc.json b/examples/api-before-14.3/.prettierrc.json
@@ -0,0 +1,7 @@
+
+{
+  "$schema": "https://json.schemastore.org/prettierrc",
+  "semi": false,
+  "singleQuote": true,
+  "arrowParens": "avoid"
+}
diff --git a/examples/api-before-14.3/.vscode/extensions.json b/examples/api-before-14.3/.vscode/extensions.json
@@ -0,0 +1,8 @@
+{
+  "recommendations": [
+    "Vue.volar",
+    "vitest.explorer",
+    "dbaeumer.vscode-eslint",
+    "esbenp.prettier-vscode"
+  ]
+}
diff --git a/examples/api-before-14.3/README.md b/examples/api-before-14.3/README.md
@@ -0,0 +1,61 @@
+# api-before-14.3
+
+This template should help get you started developing with Vue 3 in Vite.
+
+## Recommended IDE Setup
+
+[VSCode](https://code.visualstudio.com/) + [Volar](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur).
+
+## Type Support for `.vue` Imports in TS
+
+TypeScript cannot handle type information for `.vue` imports by default, so we replace the `tsc` CLI with `vue-tsc` for type checking. In editors, we need [Volar](https://marketplace.visualstudio.com/items?itemName=Vue.volar) to make the TypeScript language service aware of `.vue` types.
+
+## Customize configuration
+
+See [Vite Configuration Reference](https://vite.dev/config/).
+
+## Project Setup
+
+```sh
+npm install
+```
+
+### Compile and Hot-Reload for Development
+
+```sh
+npm run dev
+```
+
+### Type-Check, Compile and Minify for Production
+
+```sh
+npm run build
+```
+
+### Run Unit Tests with [Vitest](https://vitest.dev/)
+
+```sh
+npm run test:unit
+```
+
+### Run End-to-End Tests with [Cypress](https://www.cypress.io/)
+
+```sh
+npm run test:e2e:dev
+```
+
+This runs the end-to-end tests against the Vite development server.
+It is much faster than the production build.
+
+But it's still recommended to test the production build with `test:e2e` before deploying (e.g. in CI environments):
+
+```sh
+npm run build
+npm run test:e2e
+```
+
+### Lint with [ESLint](https://eslint.org/)
+
+```sh
+npm run lint
+```
diff --git a/examples/api-before-14.3/cypress.config.ts b/examples/api-before-14.3/cypress.config.ts
@@ -0,0 +1,8 @@
+import { defineConfig } from 'cypress'
+
+export default defineConfig({
+  e2e: {
+    specPattern: 'cypress/e2e/**/*.{cy,spec}.{js,jsx,ts,tsx}',
+    baseUrl: 'http://localhost:4173'
+  }
+})
diff --git a/examples/api-before-14.3/cypress/e2e/example.cy.ts b/examples/api-before-14.3/cypress/e2e/example.cy.ts
@@ -0,0 +1,8 @@
+// https://on.cypress.io/api
+
+describe('My First Test', () => {
+  it('visits the app root url', () => {
+    cy.visit('/')
+    cy.contains('h1', 'You did it!')
+  })
+})
diff --git a/examples/api-before-14.3/cypress/fixtures/example.json b/examples/api-before-14.3/cypress/fixtures/example.json
@@ -0,0 +1,5 @@
+{
+  "name": "Using fixtures to represent data",
+  "email": "[email protected]",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}