feat(js_formatter): explore embedded language formatting

crates/biome_cli/src/commands/rage.rs

@@ -239,6 +239,7 @@ impl Display for RageConfiguration<'_, '_> {
                             {KeyValuePair("Line ending", markup!({DebugDisplayOption(javascript_formatter_configuration.line_ending)}))}
                             {KeyValuePair("Line width", markup!({DebugDisplayOption(javascript_formatter_configuration.line_width.map(|lw| lw.value()))}))}
                             {KeyValuePair("Attribute position", markup!({DebugDisplay(javascript_formatter_configuration.attribute_position)}))}
+                            {KeyValuePair("Embedded language formatting", markup!({DebugDisplay(javascript_formatter_configuration.embedded_language_formatting)}))}
                         )
                         .fmt(fmt)?;
 

crates/biome_cli/src/execute/migrate/prettier.rs

@@ -8,7 +8,9 @@ use biome_formatter::{
     AttributePosition, IndentWidth, LineEnding, LineWidth, ParseFormatNumberError, QuoteStyle,
 };
 use biome_fs::{FileSystem, OpenOptions};
-use biome_js_formatter::context::{ArrowParentheses, QuoteProperties, Semicolons, TrailingCommas};
+use biome_js_formatter::context::{
+    ArrowParentheses, EmbeddedLanguageFormatting, QuoteProperties, Semicolons, TrailingCommas,
+};
 use biome_json_parser::JsonParserOptions;
 use biome_service::DynRef;
 use std::path::Path;
@@ -58,6 +60,8 @@ pub(crate) struct PrettierConfiguration {
     end_of_line: EndOfLine,
     /// https://prettier.io/docs/en/configuration.html#configuration-overrides
     overrides: Vec<Override>,
+    /// https://prettier.io/docs/en/options#embedded-language-formatting
+    embedded_language_formatting: PrettierEmbeddedLanguageFormatting,
 }
 
 impl Default for PrettierConfiguration {
@@ -76,6 +80,7 @@ impl Default for PrettierConfiguration {
             arrow_parens: ArrowParens::default(),
             end_of_line: EndOfLine::default(),
             overrides: vec![],
+            embedded_language_formatting: PrettierEmbeddedLanguageFormatting::default(),
         }
     }
 }
@@ -113,6 +118,8 @@ pub(crate) struct OverrideOptions {
     arrow_parens: Option<ArrowParens>,
     /// https://prettier.io/docs/en/options#end-of-line
     end_of_line: Option<EndOfLine>,
+    /// https://prettier.io/docs/en/options#embedded-language-formatting
+    embedded_language_formatting: Option<PrettierEmbeddedLanguageFormatting>,
 }
 
 #[derive(Clone, Debug, Default, Deserializable, Eq, PartialEq)]
@@ -147,6 +154,13 @@ enum QuoteProps {
     Preserve,
 }
 
+#[derive(Clone, Debug, Default, Deserializable, Eq, PartialEq)]
+enum PrettierEmbeddedLanguageFormatting {
+    #[default]
+    Auto,
+    Off,
+}
+
 impl From<PrettierTrailingComma> for TrailingCommas {
     fn from(value: PrettierTrailingComma) -> Self {
         match value {
@@ -186,6 +200,15 @@ impl From<QuoteProps> for QuoteProperties {
     }
 }
 
+impl From<PrettierEmbeddedLanguageFormatting> for EmbeddedLanguageFormatting {
+    fn from(value: PrettierEmbeddedLanguageFormatting) -> Self {
+        match value {
+            PrettierEmbeddedLanguageFormatting::Auto => Self::Auto,
+            PrettierEmbeddedLanguageFormatting::Off => Self::Off,
+        }
+    }
+}
+
 impl TryFrom<PrettierConfiguration> for biome_configuration::PartialConfiguration {
     type Error = ParseFormatNumberError;
     fn try_from(value: PrettierConfiguration) -> Result<Self, Self::Error> {
@@ -249,6 +272,7 @@ impl TryFrom<PrettierConfiguration> for biome_configuration::PartialConfiguratio
             bracket_spacing: Some(value.bracket_spacing),
             jsx_quote_style: Some(jsx_quote_style),
             attribute_position: Some(AttributePosition::default()),
+            embedded_language_formatting: Some(value.embedded_language_formatting.into()),
         };
         let js_config = biome_configuration::PartialJavascriptConfiguration {
             formatter: Some(js_formatter),
@@ -314,6 +338,7 @@ impl TryFrom<Override> for biome_configuration::OverridePattern {
             && options.trailing_comma.is_none()
             && options.quote_props.is_none()
             && options.bracket_spacing.is_none()
+            && options.embedded_language_formatting.is_none()
         {
             // no js option are set
             return Ok(result);
@@ -351,6 +376,9 @@ impl TryFrom<Override> for biome_configuration::OverridePattern {
             quote_properties: options.quote_props.map(|quote_props| quote_props.into()),
             bracket_spacing: options.bracket_spacing,
             jsx_quote_style,
+            embedded_language_formatting: options
+                .embedded_language_formatting
+                .map(|embedded_language_formatting| embedded_language_formatting.into()),
             ..Default::default()
         };
         let js_config = biome_configuration::PartialJavascriptConfiguration {

crates/biome_cli/tests/snapshots/main_commands_check/check_help.snap

@@ -46,6 +46,8 @@ The configuration that is contained inside the file `biome.json`
         --bracket-same-line=<true|false>  Whether to hug the closing bracket of multiline HTML/JSX tags
                               to the end of the last line, rather than being alone on the following line.
                               Defaults to false.
+        --embedded-language-formatting=<auto|off>  Whether to format quoted code embedded in the file.
+                              Defaults to "off".
         --javascript-formatter-enabled=<true|false>  Control the formatter for JavaScript (and its super
                               languages) files.
         --javascript-formatter-indent-style=<tab|space>  The indent style applied to JavaScript (and

crates/biome_cli/tests/snapshots/main_commands_ci/ci_help.snap

@@ -48,6 +48,8 @@ The configuration that is contained inside the file `biome.json`
         --bracket-same-line=<true|false>  Whether to hug the closing bracket of multiline HTML/JSX tags
                               to the end of the last line, rather than being alone on the following line.
                               Defaults to false.
+        --embedded-language-formatting=<auto|off>  Whether to format quoted code embedded in the file.
+                              Defaults to "off".
         --javascript-formatter-enabled=<true|false>  Control the formatter for JavaScript (and its super
                               languages) files.
         --javascript-formatter-indent-style=<tab|space>  The indent style applied to JavaScript (and

crates/biome_cli/tests/snapshots/main_commands_format/format_help.snap

@@ -34,6 +34,8 @@ Formatting options specific to the JavaScript files
         --bracket-same-line=<true|false>  Whether to hug the closing bracket of multiline HTML/JSX tags
                               to the end of the last line, rather than being alone on the following line.
                               Defaults to false.
+        --embedded-language-formatting=<auto|off>  Whether to format quoted code embedded in the file.
+                              Defaults to "off".
         --javascript-formatter-enabled=<true|false>  Control the formatter for JavaScript (and its super
                               languages) files.
         --javascript-formatter-indent-style=<tab|space>  The indent style applied to JavaScript (and

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate.snap

@@ -42,12 +42,13 @@ biome.json migrate ━━━━━━━━━━━━━━━━━━━━
       18 │ + → → → "arrowParentheses":·"always",
       19 │ + → → → "bracketSpacing":·true,
       20 │ + → → → "bracketSameLine":·false,
-      21 │ + → → → "quoteStyle":·"single",
-      22 │ + → → → "attributePosition":·"auto"
-      23 │ + → → }
-      24 │ + → }
-      25 │ + }
-      26 │ + 
+      21 │ + → → → "embeddedLanguageFormatting":·"auto",
+      22 │ + → → → "quoteStyle":·"single",
+      23 │ + → → → "attributePosition":·"auto"
+      24 │ + → → }
+      25 │ + → }
+      26 │ + }
+      27 │ + 
 
 
 ```

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_end_of_line.snap

@@ -45,12 +45,13 @@ biome.json migrate ━━━━━━━━━━━━━━━━━━━━
       17 │ + → → → "arrowParentheses":·"always",
       18 │ + → → → "bracketSpacing":·true,
       19 │ + → → → "bracketSameLine":·false,
-      20 │ + → → → "quoteStyle":·"single",
-      21 │ + → → → "attributePosition":·"auto"
-      22 │ + → → }
-      23 │ + → }
-      24 │ + }
-      25 │ + 
+      20 │ + → → → "embeddedLanguageFormatting":·"auto",
+      21 │ + → → → "quoteStyle":·"single",
+      22 │ + → → → "attributePosition":·"auto"
+      23 │ + → → }
+      24 │ + → }
+      25 │ + }
+      26 │ + 
 
 
 ```

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_fix.snap

@@ -25,6 +25,7 @@ expression: content
       "arrowParentheses": "always",
       "bracketSpacing": true,
       "bracketSameLine": false,
+      "embeddedLanguageFormatting": "auto",
       "quoteStyle": "single",
       "attributePosition": "auto"
     }

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_jsonc.snap

@@ -42,12 +42,13 @@ biome.jsonc migrate ━━━━━━━━━━━━━━━━━━━━
       18 │ + → → → "arrowParentheses":·"always",
       19 │ + → → → "bracketSpacing":·true,
       20 │ + → → → "bracketSameLine":·false,
-      21 │ + → → → "quoteStyle":·"single",
-      22 │ + → → → "attributePosition":·"auto"
-      23 │ + → → }
-      24 │ + → }
-      25 │ + }
-      26 │ + 
+      21 │ + → → → "embeddedLanguageFormatting":·"auto",
+      22 │ + → → → "quoteStyle":·"single",
+      23 │ + → → → "attributePosition":·"auto"
+      24 │ + → → }
+      25 │ + → }
+      26 │ + }
+      27 │ + 
 
 
 ```

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_overrides.snap

@@ -52,28 +52,29 @@ biome.json migrate ━━━━━━━━━━━━━━━━━━━━
       17 │ + → → → "arrowParentheses":·"always",
       18 │ + → → → "bracketSpacing":·true,
       19 │ + → → → "bracketSameLine":·false,
-      20 │ + → → → "quoteStyle":·"single",
-      21 │ + → → → "attributePosition":·"auto"
-      22 │ + → → }
-      23 │ + → },
-      24 │ + → "overrides":·[
-      25 │ + → → {·"include":·["**/*.test.js"],·"formatter":·{·"indentStyle":·"space"·}·},
-      26 │ + → → {
-      27 │ + → → → "include":·["**/*.spec.js"],
-      28 │ + → → → "javascript":·{
-      29 │ + → → → → "formatter":·{·"semicolons":·"always",·"quoteStyle":·"single"·}
-      30 │ + → → → }
-      31 │ + → → },
-      32 │ + → → {
-      33 │ + → → → "include":·["**/*.ts"],
-      34 │ + → → → "javascript":·{
-      35 │ + → → → → "formatter":·{·"semicolons":·"always",·"quoteStyle":·"single"·}
-      36 │ + → → → },
-      37 │ + → → → "formatter":·{·"indentStyle":·"space"·}
-      38 │ + → → }
-      39 │ + → ]
-      40 │ + }
-      41 │ + 
+      20 │ + → → → "embeddedLanguageFormatting":·"auto",
+      21 │ + → → → "quoteStyle":·"single",
+      22 │ + → → → "attributePosition":·"auto"
+      23 │ + → → }
+      24 │ + → },
+      25 │ + → "overrides":·[
+      26 │ + → → {·"include":·["**/*.test.js"],·"formatter":·{·"indentStyle":·"space"·}·},
+      27 │ + → → {
+      28 │ + → → → "include":·["**/*.spec.js"],
+      29 │ + → → → "javascript":·{
+      30 │ + → → → → "formatter":·{·"semicolons":·"always",·"quoteStyle":·"single"·}
+      31 │ + → → → }
+      32 │ + → → },
+      33 │ + → → {
+      34 │ + → → → "include":·["**/*.ts"],
+      35 │ + → → → "javascript":·{
+      36 │ + → → → → "formatter":·{·"semicolons":·"always",·"quoteStyle":·"single"·}
+      37 │ + → → → },
+      38 │ + → → → "formatter":·{·"indentStyle":·"space"·}
+      39 │ + → → }
+      40 │ + → ]
+      41 │ + }
+      42 │ + 
 
 
 ```

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_with_ignore.snap

@@ -56,12 +56,13 @@ biome.json migrate ━━━━━━━━━━━━━━━━━━━━
       19 │ + → → → "arrowParentheses":·"always",
       20 │ + → → → "bracketSpacing":·true,
       21 │ + → → → "bracketSameLine":·false,
-      22 │ + → → → "quoteStyle":·"single",
-      23 │ + → → → "attributePosition":·"auto"
-      24 │ + → → }
-      25 │ + → }
-      26 │ + }
-      27 │ + 
+      22 │ + → → → "embeddedLanguageFormatting":·"auto",
+      23 │ + → → → "quoteStyle":·"single",
+      24 │ + → → → "attributePosition":·"auto"
+      25 │ + → → }
+      26 │ + → }
+      27 │ + }
+      28 │ + 
 
 
 ```

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_write.snap

@@ -25,6 +25,7 @@ expression: content
       "arrowParentheses": "always",
       "bracketSpacing": true,
       "bracketSameLine": false,
+      "embeddedLanguageFormatting": "auto",
       "quoteStyle": "single",
       "attributePosition": "auto"
     }

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_write_biome_jsonc.snap

@@ -25,6 +25,7 @@ expression: content
       "arrowParentheses": "always",
       "bracketSpacing": true,
       "bracketSameLine": false,
+      "embeddedLanguageFormatting": "auto",
       "quoteStyle": "single",
       "attributePosition": "auto"
     }

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_write_packagejson.snap

@@ -25,6 +25,7 @@ expression: content
       "arrowParentheses": "always",
       "bracketSpacing": true,
       "bracketSameLine": false,
+      "embeddedLanguageFormatting": "auto",
       "quoteStyle": "single",
       "attributePosition": "auto"
     }

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettier_migrate_write_with_ignore_file.snap

@@ -26,6 +26,7 @@ expression: content
       "arrowParentheses": "always",
       "bracketSpacing": true,
       "bracketSameLine": false,
+      "embeddedLanguageFormatting": "auto",
       "quoteStyle": "single",
       "attributePosition": "auto"
     }

crates/biome_cli/tests/snapshots/main_commands_migrate_prettier/prettierjson_migrate_write.snap

@@ -25,6 +25,7 @@ expression: content
       "arrowParentheses": "always",
       "bracketSpacing": true,
       "bracketSameLine": false,
+      "embeddedLanguageFormatting": "auto",
       "quoteStyle": "single",
       "attributePosition": "auto"
     }

crates/biome_cli/tests/snapshots/main_commands_rage/with_formatter_configuration.snap

@@ -100,6 +100,7 @@ JavaScript Formatter:
   Line ending:                  Lf
   Line width:                   100
   Attribute position:           Auto
+  Embedded language formatting: Off
 
 JSON Formatter:
   Enabled:                      true