12 lines
964 B
JavaScript
12 lines
964 B
JavaScript
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import * as React from 'react'; // React currently throws a warning when using useLayoutEffect on the server.
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// To get around it, we can conditionally useEffect on the server (no-op) and
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// useLayoutEffect in the browser. We need useLayoutEffect to ensure the store
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// subscription callback always has the selector from the latest render commit
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// available, otherwise a store update may happen between render and the effect,
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// which may cause missed updates; we also must ensure the store subscription
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// is created synchronously, otherwise a store update may occur before the
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// subscription is created and an inconsistent state may be observed
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// Matches logic in React's `shared/ExecutionEnvironment` file
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export const canUseDOM = !!(typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined');
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export const useIsomorphicLayoutEffect = canUseDOM ? React.useLayoutEffect : React.useEffect;
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