Update dependency styled-components to v6.4.0 #41
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This PR contains the following updates:
6.3.12→6.4.0Release Notes
styled-components/styled-components (styled-components)
v6.4.0Compare Source
Minor Changes
b0f3d29:.attrs()improvements: props supplied via attrs are now automatically made optional on the resulting component (previously required even when attrs provided a default). Also fixes a bug where the attrs callback received a mutable props object that could be changed by subsequent attrs processing; it now receives an immutable snapshot.2a973d8: Dropped IE11 support: ES2015 build target, inlined unitless CSS properties (removing @emotion/unitless dependency), removed legacy React class statics from hoist and other unnecessary code.9e07d95: AddcreateTheme(defaultTheme, options?)for CSS variable theming that works across RSC and client components.Returns an object with the same shape where every leaf is
var(--prefix-path, fallback). Pass it toThemeProviderfor stable class name hashes across themes (no hydration mismatch on light/dark switch).varsexposes bare CSS custom property names (same shape as the theme) for use increateGlobalStyledark mode overrides without hand-writing variable names:Options:
prefix(default"sc"),selector(default":root", use":host"for Shadow DOM).79cc7b4: Add first-class CSP nonce support. Nonces can now be configured viaStyleSheetManager'snonceprop (recommended for Next.js, Remix),ServerStyleSheet's constructor,<meta property="csp-nonce">(Vite convention),<meta name="sc-nonce">, or the legacy__webpack_nonce__global.b0f3d29: RearchitectcreateGlobalStyleto use shared stylesheet groups.All instances of a
createGlobalStylecomponent now share a single stylesheet group, registered once at definition time. This fixes unmounting one instance removing styles needed by others (#5695), styles scattering after remount (#3146), and group ID leaks during SSR (#3022).CSS injection order is now fully determined at definition time (lower group ID = earlier in stylesheet). Render order no longer affects CSS order. Keyframes defined before a component correctly appear before that component's rules.
Also fixes: O(n^2) performance regression in jsdom test environments from unbounded rule accumulation, and stale static global styles during client-side HMR (effect deps now include the
globalStylereference so module re-evaluation triggers re-injection).b0f3d29: Significant render performance improvements via three-layer memoization and hot-path micro-optimizations. Client-only; server renders are unaffected.Re-renders that don't change styling now skip style resolution entirely. Components sharing the same CSS (e.g., list items) benefit from cross-sibling caching. Hot-path changes include
forEach→for/for...of, template literal → manual concat, and reduced allocations.Benchmarks vs 6.3.12:
9ada92b: React Server Components support: inline style injection, deduplication, and a newstylisPluginRSCfor child-index selector fixes.Inline style injection: RSC-rendered styled components emit
<style data-styled>tags alongside their elements. CSS is deduplicated per render viaReact.cache(React 19+). Extended components use:where()zero-specificity wrapping on base CSS so extensions always win the cascade regardless of injection order.StyleSheetManagerworks in RSC:stylisPluginsandshouldForwardPropare now applied in server component environments where React context is unavailable.stylisPluginRSC— opt-in stylis plugin that fixes:first-child,:last-child,:nth-child(), and:nth-last-child()selectors broken by inline<style>tags shifting child indices. Rewrites them using CSS Selectors Level 4of Ssyntax to exclude styled-components style tags from the count.The plugin rewrites
:first-child,:last-child,:nth-child(), and:nth-last-child()using CSS Selectors Level 4of Ssyntax to exclude injected style tags from the child count.Browser support: Chrome 111+, Firefox 113+, Safari 9+ (~93% global). In unsupported browsers, the entire CSS rule is dropped — only opt in if your audience supports it. Use
:first-of-type/:nth-of-type()as a universally compatible alternative.HMR: Stale styles during client-side HMR are detected and invalidated when module re-evaluation creates new component instances while IDs remain stable (SWC plugin assigns IDs by file location).
createGlobalStyleadditionally clears stale sheet entries when the instance changes between renders.The plugin is fully tree-shakeable — zero bytes in bundles that don't import it.
Patch Changes
b0f3d29: ExposeasandforwardedAsprops inReact.ComponentPropsextraction for styled components553cbb4: Fix memory leak in long-running apps using components with free-form string interpolations (e.g.color: ${p => p.$dynamicValue}where the value comes from unbounded user input).b0f3d29: React Native improvements: replaced postcss with a lightweight CSS declaration parser, fixingnanoidcrashes in Expo/Metro (#5705) and improving parse speed 4-6x. Parent re-renders with unchanged children are 2.6-3.2x faster via cache-first render. Updated native component alias list (removed 5 dead components, added 4 missing). Addedreact-nativeas an optional peer dependency.74e8b76: Smaller install footprint via unused dependency cleanup.Configuration
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