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matanshavitmatanshavit
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fix(formatter): preserve component tag casing in Svelte/Astro/Vue files (#7869)
1 parent 7165d06 commit c80361d

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+314
-14
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‎.changeset/fix-html-component-tag-casing.md‎

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@@ -0,0 +1,5 @@
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---
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"@biomejs/biome": patch
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---
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Fixed [#7864](https://github.com/biomejs/biome/issues/7864): Biome now preserves component tag name casing in Svelte, Astro, and Vue files.

‎crates/biome_html_formatter/src/context.rs‎

Lines changed: 27 additions & 2 deletions
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@@ -9,8 +9,11 @@ use biome_html_syntax::{HtmlFileSource, HtmlLanguage};
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use crate::comments::{FormatHtmlComment, HtmlCommentStyle, HtmlComments};
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#[derive(Debug, Clone, Default)]
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#[derive(Debug, Clone)]
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pub struct HtmlFormatOptions {
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/// The file source.
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file_source: HtmlFileSource,
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/// The indent style.
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indent_style: IndentStyle,
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@@ -46,13 +49,35 @@ pub struct HtmlFormatOptions {
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self_close_void_elements: SelfCloseVoidElements,
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}
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impl Default for HtmlFormatOptions {
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fn default() -> Self {
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Self {
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file_source: HtmlFileSource::html(),
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indent_style: IndentStyle::default(),
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indent_width: IndentWidth::default(),
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line_ending: LineEnding::default(),
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line_width: LineWidth::default(),
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attribute_position: AttributePosition::default(),
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bracket_same_line: BracketSameLine::default(),
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whitespace_sensitivity: WhitespaceSensitivity::default(),
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indent_script_and_style: IndentScriptAndStyle::default(),
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self_close_void_elements: SelfCloseVoidElements::default(),
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}
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}
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}
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impl HtmlFormatOptions {
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pub fn new(_file_source: HtmlFileSource) -> Self {
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pub fn new(file_source: HtmlFileSource) -> Self {
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Self {
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file_source,
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..Default::default()
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}
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}
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pub fn file_source(&self) -> &HtmlFileSource {
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&self.file_source
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}
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pub fn with_indent_style(mut self, indent_style: IndentStyle) -> Self {
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self.indent_style = indent_style;
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self

‎crates/biome_html_formatter/src/html/auxiliary/opening_element.rs‎

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@@ -1,7 +1,7 @@
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use crate::{
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html::lists::attribute_list::FormatHtmlAttributeListOptions,
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prelude::*,
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utils::metadata::{is_canonical_html_tag, is_element_whitespace_sensitive},
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utils::metadata::{is_element_whitespace_sensitive, should_lowercase_html_tag},
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};
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use biome_formatter::{FormatRuleWithOptions, GroupId, write};
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use biome_html_syntax::{HtmlOpeningElement, HtmlOpeningElementFields};
@@ -48,7 +48,7 @@ impl FormatNodeRule<HtmlOpeningElement> for FormatHtmlOpeningElement {
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let l_angle_token = l_angle_token?;
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let name = name?;
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let is_whitespace_sensitive = is_element_whitespace_sensitive(f, &name);
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let is_canonical_html_tag = is_canonical_html_tag(&name);
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let is_canonical_html_element = should_lowercase_html_tag(f, &name);
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let bracket_same_line = f.options().bracket_same_line().value();
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@@ -66,7 +66,7 @@ impl FormatNodeRule<HtmlOpeningElement> for FormatHtmlOpeningElement {
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attributes
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.format()
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.with_options(FormatHtmlAttributeListOptions {
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is_canonical_html_element: is_canonical_html_tag,
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is_canonical_html_element,
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tag_name: Some(name.clone()),
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})
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.fmt(f)?;

‎crates/biome_html_formatter/src/html/auxiliary/self_closing_element.rs‎

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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
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use crate::{
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html::lists::attribute_list::FormatHtmlAttributeListOptions, prelude::*,
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utils::metadata::is_canonical_html_tag,
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utils::metadata::should_lowercase_html_tag,
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};
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use biome_formatter::write;
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use biome_html_syntax::{HtmlSelfClosingElement, HtmlSelfClosingElementFields};
@@ -18,7 +18,7 @@ impl FormatNodeRule<HtmlSelfClosingElement> for FormatHtmlSelfClosingElement {
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let bracket_same_line = f.options().bracket_same_line().value();
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let self_close_void_elements = f.options().self_close_void_elements();
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let name = name?;
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let is_canonical_html_tag = is_canonical_html_tag(&name);
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let is_canonical_html_element = should_lowercase_html_tag(f, &name);
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write!(f, [l_angle_token.format(), name.format()])?;
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@@ -29,7 +29,7 @@ impl FormatNodeRule<HtmlSelfClosingElement> for FormatHtmlSelfClosingElement {
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attributes
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.format()
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.with_options(FormatHtmlAttributeListOptions {
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is_canonical_html_element: is_canonical_html_tag,
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is_canonical_html_element,
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tag_name: Some(name.clone()),
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})
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.fmt(f)?;

‎crates/biome_html_formatter/src/html/auxiliary/tag_name.rs‎

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@@ -1,18 +1,16 @@
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use crate::{
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prelude::*,
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utils::{formatters::FormatTokenAsLowercase, metadata::is_canonical_html_tag},
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utils::{formatters::FormatTokenAsLowercase, metadata::should_lowercase_html_tag},
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};
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use biome_formatter::write;
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use biome_html_syntax::{HtmlTagName, HtmlTagNameFields};
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#[derive(Debug, Clone, Default)]
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pub(crate) struct FormatHtmlTagName;
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impl FormatNodeRule<HtmlTagName> for FormatHtmlTagName {
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fn fmt_fields(&self, node: &HtmlTagName, f: &mut HtmlFormatter) -> FormatResult<()> {
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// TODO: maybe move this check to a parent node so we aren't checking this twice per tag?
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let is_canonical_html_tag = is_canonical_html_tag(node);
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let HtmlTagNameFields { value_token } = node.as_fields();
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if is_canonical_html_tag {
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if should_lowercase_html_tag(f, node) {
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write!(f, [FormatTokenAsLowercase::from(value_token?)])
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} else {
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write![f, [value_token.format()]]

‎crates/biome_html_formatter/src/utils/metadata.rs‎

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@@ -724,6 +724,14 @@ pub(crate) fn is_canonical_html_tag(tag_name: &HtmlTagName) -> bool {
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is_canonical_html_tag_name(tag_name.text_trimmed())
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}
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/// Whether a tag should be lowercased in the current formatting context.
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///
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/// Returns `true` only for canonical HTML tags in pure HTML files (.html).
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/// Component frameworks preserve tag name casing.
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pub(crate) fn should_lowercase_html_tag(f: &HtmlFormatter, tag_name: &HtmlTagName) -> bool {
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f.options().file_source().is_html() && is_canonical_html_tag(tag_name)
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}
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/// Whether the given attribute name is a known HTML attribute for the given tag name.
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///
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/// See [`HTML_ATTRIBUTES_BY_TAG`], [`HTML_GLOBAL_ATTRIBUTES`].

‎crates/biome_html_formatter/tests/spec_test.rs‎

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@@ -51,7 +51,7 @@ pub fn run(spec_input_file: &str, _expected_file: &str, test_directory: &str, _f
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let source_type: HtmlFileSource = test_file.input_file().as_path().try_into().unwrap();
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54-
let options = HtmlFormatOptions::new(HtmlFileSource::html());
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let options = HtmlFormatOptions::new(source_type);
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let language = language::HtmlTestFormatLanguage::new(source_type);
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let snapshot = SpecSnapshot::new(

‎crates/biome_html_formatter/tests/spec_tests.rs‎

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@@ -4,6 +4,6 @@ mod spec_test;
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mod formatter {
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mod html {
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tests_macros::gen_tests! {"tests/specs/html/**/*.{html,vue}", crate::spec_test::run, ""}
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tests_macros::gen_tests! {"tests/specs/html/**/*.{html,vue,svelte,astro}", crate::spec_test::run, ""}
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}
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}

‎crates/biome_html_formatter/tests/specs/html/component-frameworks/astro-component-casing.astro‎

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---
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import Button from './Button.astro';
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import TextInput from './TextInput.astro';
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---
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<Button label="test button" />
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<TextInput placeholder="enter text" />
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<button>native button</button>
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<input type="text" />

‎crates/biome_html_formatter/tests/specs/html/component-frameworks/astro-component-casing.astro.snap‎

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---
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source: crates/biome_formatter_test/src/snapshot_builder.rs
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info: component-frameworks/astro-component-casing.astro
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---
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# Input
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```astro
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---
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import Button from './Button.astro';
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import TextInput from './TextInput.astro';
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---
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<Button label="test button" />
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<TextInput placeholder="enter text" />
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<button>native button</button>
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<input type="text" />
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```
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=============================
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# Outputs
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## Output 1
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-----
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Indent style: Tab
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Indent width: 2
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Line ending: LF
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Line width: 80
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Attribute Position: Auto
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Bracket same line: false
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Whitespace sensitivity: css
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Indent script and style: false
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Self close void elements: never
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-----
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```astro
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---
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import Button from './Button.astro';
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import TextInput from './TextInput.astro';
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---
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<Button label="test button"/>
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<TextInput placeholder="enter text"/>
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<button>native button</button>
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<input type="text">
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```
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## Unimplemented nodes/tokens
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"import Button from './Button.astro';\nimport TextInput from './TextInput.astro';\n-" => 4..85

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