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Marc-André BombeckandClaude Opus 4.7
3048dd6637
Pre-existing format drift accumulated across v1.4.x; running prettier brings the whole tree back to baseline so future diffs read clean. No behaviour change. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
29 lines
954 B
TypeScript
29 lines
954 B
TypeScript
/**
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* Tiny helper for chart wrappers that need to respect
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* `prefers-reduced-motion` (v1.4.16 B1a).
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*
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* SSR-safe: returns `false` (i.e. animations *enabled*) whenever
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* `window.matchMedia` is unavailable. The chart wrappers consume this
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* during render and pass the negation to Recharts' `isAnimationActive`
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* prop so first-render line-draw animations are suppressed for users
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* who've requested reduced motion at the OS level.
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*
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* Pure / no-side-effects so the unit test runs under the default
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* vitest "node" environment.
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*/
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export function prefersReducedMotion(): boolean {
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if (
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typeof window === "undefined" ||
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typeof window.matchMedia !== "function"
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) {
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return false;
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}
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try {
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return window.matchMedia("(prefers-reduced-motion: reduce)").matches;
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} catch {
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// matchMedia can throw on legacy mobile browsers when the query
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// string is unrecognised — fall back to "no, animate".
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return false;
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}
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}
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