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JavaScript: Fix string print when switching quotes (#18351 by @fisker)
// Inputconsole.log("A descriptor\\'s .kind must be \"method\" or \"field\".")// Prettier 3.7.1console.log('A descriptor\\'s.kindmustbe"method"or"field".');
// Prettier 3.7.2console.log('A descriptor\\\'s .kind must be "method" or "field".');
JavaScript: Preserve quote for embedded HTML attribute values (#18352 by @kovsu)
// Inputconsthtml=/* HTML */` <div class="${styles.banner}"></div> `;// Prettier 3.7.1consthtml=/* HTML */` <div class=${styles.banner}></div> `;// Prettier 3.7.2consthtml=/* HTML */` <div class="${styles.banner}"></div> `;
TypeScript: Fix comment in empty type literal (#18364 by @fisker)
51ffa9c: Fix createGlobalStyle compatibility with React StrictMode and RSC
This fix addresses issues where global styles would disappear or behave incorrectly in React StrictMode and RSC:
Static styles optimization: Static global styles (without props/interpolations) are now only injected once and won't be removed/re-added on every render. This prevents the style flickering that could occur during concurrent rendering.
StrictMode-aware cleanup: Style cleanup now uses queueMicrotask to coordinate with React's effect lifecycle. In StrictMode's simulated unmount/remount cycle, styles are preserved. On real unmount, styles are properly removed.
RSC compatibility: Move useRef inside RSC guard in createGlobalStyle and unify all useContext calls to use consistent !IS_RSC ? pattern.
RSC inline style tag cleanup: Fix bug where server-defined createGlobalStyle rendered in client components would leave behind accumulated SSR-rendered inline <style data-styled-global> tags. The cleanup effect now removes these hoisted style tags when the component unmounts or re-renders with different CSS.
These changes ensure createGlobalStyle works correctly with:
React StrictMode's double-render behavior
React 18/19's concurrent rendering features
React 19's style hoisting with the precedence attribute
React Server Components (server-defined GlobalStyles in client components)
189bc17: Fix url() CSS function values being incorrectly stripped when using unquoted URLs containing // (e.g., url(https://example.com)). The // in protocol URLs like https://, http://, file://, and protocol-relative URLs was incorrectly being treated as a JavaScript-style line comment.
7ff7002: Fix: Line comments (//) in multiline CSS declarations no longer cause parsing errors (fixes #5613)
JS-style line comments (//) placed after multiline declarations like calc() were not being properly stripped, causing CSS parsing issues. Comments are now correctly removed anywhere in the CSS while preserving valid syntax.
Example that now works:
constBox=styled.div` max-height: calc(100px + 200px + 300px); // This comment no longer breaks parsing background-color: green;`;
7ff7002: Fix: Contain invalid CSS syntax to just the affected line
In styled-components v6, invalid CSS syntax (like unbalanced braces) could cause all subsequent styles to be ignored. This fix ensures that malformed CSS only affects the specific declaration, not subsequent valid styles.
Example that now works:
constCircle=styled.div` width: 100px; line-height: ${()=>'14px}'}; // ⛔️ This malformed line is dropped background-color: green; // ✅ Now preserved (was ignored in v6)`;
8e8c282: Fixed createGlobalStyle to not use useLayoutEffect on the server, which was causing a warning and broken styles in v6.3.x. The check typeof React.useLayoutEffect === 'function' is not reliable for detecting server vs client environments in React 18+, so we now use the __SERVER__ build constant instead.
6e4d1e7: fix: suppress false "created dynamically" warnings in React Server Components
The dynamic creation warning check now properly detects RSC environments and skips validation when IS_RSC is true. This eliminates false warnings for module-level styled components in server components, which were incorrectly flagged due to RSC's different module evaluation context. Module-level styled components in RSC files no longer trigger warnings since they cannot be created inside render functions by definition.
a4b4a6b: fix: include TypeScript declaration files in npm package
Fixed Rollup TypeScript plugin configuration to override tsconfig.json's noEmit setting, ensuring TypeScript declaration files are generated during build.
a4b4a6b: fix: resolve TypeScript error blocking type declaration emission
Fixed TypeScript error in StyledComponent when merging style attributes from attrs. Added explicit type cast to React.CSSProperties to safely merge CSS property objects. This error was preventing TypeScript declaration files from being generated during build.
28fd502: Add React Server Components (RSC) support
styled-components now automatically detects RSC environments and handles CSS delivery appropriately:
No 'use client' directive required: Components work in RSC without any wrapper or directive
Automatic CSS injection: In RSC mode, styled components emit inline <style> tags that React 19 automatically hoists and deduplicates
Zero configuration: Works out of the box with Next.js App Router and other RSC-enabled frameworks
Backward compatible: Existing SSR patterns with ServerStyleSheet continue to work unchanged
RSC best practices:
Prefer static styles over dynamic interpolations to avoid serialization overhead
Use data attributes for discrete variants (e.g., &[data-size='lg'])
CSS custom properties work perfectly in styled-components, can be set via inline style, and cascade to children:
constContainer=styled.div``;constButton=styled.button` background: var(--color-primary, blue);`;// Variables set on parent cascade to all DOM children<Containerstyle={{'--color-primary': 'orchid'}}><Button>Inherits orchid background</Button></Container>;
Use build-time CSS variable generation for theming since ThemeProvider is a no-op in RSC
Technical details:
RSC detection via typeof React.createContext === 'undefined'
ThemeProvider and StyleSheetManager become no-ops in RSC (children pass-through)
React hooks are conditionally accessed via runtime guards
CSS is retrieved from the StyleSheet Tag for inline delivery in RSC mode
856cf06: feat: update built-in element aliases to include modern HTML and SVG elements
Added support for modern HTML and SVG elements that were previously missing:
HTML elements:
search - HTML5 search element
slot - Web Components slot element
template - HTML template element
SVG filter elements:
All fe* filter primitive elements (feBlend, feColorMatrix, feComponentTransfer, etc.)
clipPath, linearGradient, radialGradient - gradient and clipping elements
textPath - SVG text path element
switch, symbol, use - SVG structural elements
This ensures styled-components has comprehensive coverage of all styleable HTML and SVG elements supported by modern browsers and React.
Patch Changes
418adbe: fix(types): add CSS custom properties (variables) support to style prop
CSS custom properties (CSS variables like --primary-color) are now fully supported in TypeScript without errors:
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
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This PR contains the following updates:
^24.3.0→^24.10.12^19.2.2→^19.2.13^19.2.2→^19.2.3^15.5.7→^15.5.12^3.6.2→^3.8.1^19.2.1→^19.2.4^19.2.1→^19.2.4^6.1.19→^6.3.86.3.95.9.2→5.9.3🔧 This Pull Request updates lock files to use the latest dependency versions.
Release Notes
vercel/next.js (next)
v15.5.12Compare Source
v15.5.11Compare Source
Core Changes
Credits
Huge thanks to @timneutkens, @mischnic, @ztanner, and @wyattjoh for helping!
v15.5.10Compare Source
Please refer the following changelogs for more information about this security release:
v15.5.9Compare Source
v15.5.8Compare Source
prettier/prettier (prettier)
v3.8.1Compare Source
v3.8.0Compare Source
diff
🔗 Release note
v3.7.4Compare Source
diff
LWC: Avoid quote around interpolations (#18383 by @kovsu)
TypeScript: Fix comment inside union type gets duplicated (#18393 by @fisker)
TypeScript: Fix unstable comment print in union type comments (#18395 by @fisker)
v3.7.3Compare Source
diff
API: Fix
prettier.getFileInfo()change that breaks VSCode extension (#18375 by @fisker)An internal refactor accidentally broke the VSCode extension plugin loading.
v3.7.2Compare Source
diff
JavaScript: Fix string print when switching quotes (#18351 by @fisker)
JavaScript: Preserve quote for embedded HTML attribute values (#18352 by @kovsu)
TypeScript: Fix comment in empty type literal (#18364 by @fisker)
v3.7.1Compare Source
diff
API: Fix performance regression in doc printer (#18342 by @fisker)
Prettier 3.7.1 can be very slow when formatting big files, the regression has been fixed.
v3.7.0Compare Source
diff
🔗 Release Notes
facebook/react (react)
v19.2.4: 19.2.4 (January 26th, 2026)Compare Source
React Server Components
v19.2.3: 19.2.3 (December 11th, 2025)Compare Source
React Server Components
v19.2.2: 19.2.2 (December 11th, 2025)Compare Source
React Server Components
react-server-dom-webpack/*.unbundledto privatereact-server-dom-unbundled(@eps1lon #35290)styled-components/styled-components (styled-components)
v6.3.8Compare Source
Patch Changes
55d05c1: Make react-dom an optional peer dependency, clean up some unnecessary type peers.v6.3.7Compare Source
Patch Changes
51ffa9c: Fix createGlobalStyle compatibility with React StrictMode and RSCThis fix addresses issues where global styles would disappear or behave incorrectly in React StrictMode and RSC:
Static styles optimization: Static global styles (without props/interpolations) are now only injected once and won't be removed/re-added on every render. This prevents the style flickering that could occur during concurrent rendering.
StrictMode-aware cleanup: Style cleanup now uses
queueMicrotaskto coordinate with React's effect lifecycle. In StrictMode's simulated unmount/remount cycle, styles are preserved. On real unmount, styles are properly removed.RSC compatibility: Move
useRefinside RSC guard increateGlobalStyleand unify alluseContextcalls to use consistent!IS_RSC ?pattern.RSC inline style tag cleanup: Fix bug where server-defined
createGlobalStylerendered in client components would leave behind accumulated SSR-rendered inline<style data-styled-global>tags. The cleanup effect now removes these hoisted style tags when the component unmounts or re-renders with different CSS.These changes ensure
createGlobalStyleworks correctly with:precedenceattribute51ffa9c: Restorestyled.br.1f794b7: Add package.json "exports" field for better native ESM integration.v6.3.6Compare Source
Patch Changes
189bc17: Fix url() CSS function values being incorrectly stripped when using unquoted URLs containing//(e.g.,url(https://example.com)). The//in protocol URLs likehttps://,http://,file://, and protocol-relative URLs was incorrectly being treated as a JavaScript-style line comment.v6.3.5Compare Source
Patch Changes
7ff7002: Fix: Line comments (//) in multiline CSS declarations no longer cause parsing errors (fixes #5613)JS-style line comments (
//) placed after multiline declarations likecalc()were not being properly stripped, causing CSS parsing issues. Comments are now correctly removed anywhere in the CSS while preserving valid syntax.Example that now works:
7ff7002: Fix: Contain invalid CSS syntax to just the affected lineIn styled-components v6, invalid CSS syntax (like unbalanced braces) could cause all subsequent styles to be ignored. This fix ensures that malformed CSS only affects the specific declaration, not subsequent valid styles.
Example that now works:
v6.3.4Compare Source
Patch Changes
8e8c282: FixedcreateGlobalStyleto not useuseLayoutEffecton the server, which was causing a warning and broken styles in v6.3.x. The checktypeof React.useLayoutEffect === 'function'is not reliable for detecting server vs client environments in React 18+, so we now use the__SERVER__build constant instead.v6.3.3Compare Source
Patch Changes
6e4d1e7: fix: suppress false "created dynamically" warnings in React Server ComponentsThe dynamic creation warning check now properly detects RSC environments and skips validation when
IS_RSCis true. This eliminates false warnings for module-level styled components in server components, which were incorrectly flagged due to RSC's different module evaluation context. Module-level styled components in RSC files no longer trigger warnings since they cannot be created inside render functions by definition.v6.3.2Compare Source
Patch Changes
a4b4a6b: fix: include TypeScript declaration files in npm packageFixed Rollup TypeScript plugin configuration to override tsconfig.json's noEmit setting, ensuring TypeScript declaration files are generated during build.
a4b4a6b: fix: resolve TypeScript error blocking type declaration emissionFixed TypeScript error in StyledComponent when merging style attributes from attrs. Added explicit type cast to React.CSSProperties to safely merge CSS property objects. This error was preventing TypeScript declaration files from being generated during build.
v6.3.1Compare Source
Patch Changes
046e880: Ensure TypeScript declaration files are included in npm package, needed to tweak a Rollup setting.v6.3.0Compare Source
Minor Changes
28fd502: Add React Server Components (RSC) supportstyled-components now automatically detects RSC environments and handles CSS delivery appropriately:
'use client'directive required: Components work in RSC without any wrapper or directive<style>tags that React 19 automatically hoists and deduplicatesServerStyleSheetcontinue to work unchangedRSC best practices:
&[data-size='lg'])style, and cascade to children:ThemeProvideris a no-op in RSCTechnical details:
typeof React.createContext === 'undefined'ThemeProviderandStyleSheetManagerbecome no-ops in RSC (children pass-through)856cf06: feat: update built-in element aliases to include modern HTML and SVG elementsAdded support for modern HTML and SVG elements that were previously missing:
HTML elements:
search- HTML5 search elementslot- Web Components slot elementtemplate- HTML template elementSVG filter elements:
fe*filter primitive elements (feBlend, feColorMatrix, feComponentTransfer, etc.)clipPath,linearGradient,radialGradient- gradient and clipping elementstextPath- SVG text path elementswitch,symbol,use- SVG structural elementsThis ensures styled-components has comprehensive coverage of all styleable HTML and SVG elements supported by modern browsers and React.
Patch Changes
418adbe: fix(types): add CSS custom properties (variables) support to style propCSS custom properties (CSS variables like
--primary-color) are now fully supported in TypeScript without errors:.attrs({ style: { '--var': 'value' } })- CSS variables in attrs<Component style={{ '--var': 'value' }} />- CSS variables in component propsaef2ad6: Update shared css property handling tools to latest versions.v6.2.0Compare Source
microsoft/TypeScript (typescript)
v5.9.3: TypeScript 5.9.3Compare Source
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