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@material-ui/core

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React components that implement Google's Material Design.

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import _extends from "@babel/runtime/helpers/esm/extends"; import React from 'react'; import warning from 'warning'; import { getThemeProps, useTheme } from '@material-ui/styles'; // This variable will be true once the server-side hydration is completed. let hydrationCompleted = false; function useMediaQuery(queryInput, options = {}) { const theme = useTheme(); const props = getThemeProps({ theme, name: 'MuiUseMediaQuery', props: {} }); process.env.NODE_ENV !== "production" ? warning(typeof queryInput !== 'function' || theme !== null, ['Material-UI: the `query` argument provided is invalid.', 'You are providing a function without a theme in the context.', 'One of the parent elements needs to use a ThemeProvider.'].join('\n')) : void 0; let query = typeof queryInput === 'function' ? queryInput(theme) : queryInput; query = query.replace(/^@media( ?)/m, ''); // Wait for jsdom to support the match media feature. // All the browsers Material-UI support have this built-in. // This defensive check is here for simplicity. // Most of the time, the match media logic isn't central to people tests. const supportMatchMedia = typeof window !== 'undefined' && typeof window.matchMedia !== 'undefined'; const { defaultMatches = false, noSsr = false, ssrMatchMedia = null } = _extends({}, props, {}, options); const [match, setMatch] = React.useState(() => { if ((hydrationCompleted || noSsr) && supportMatchMedia) { return window.matchMedia(query).matches; } if (ssrMatchMedia) { return ssrMatchMedia(query).matches; } // Once the component is mounted, we rely on the // event listeners to return the correct matches value. return defaultMatches; }); React.useEffect(() => { hydrationCompleted = true; if (!supportMatchMedia) { return undefined; } const queryList = window.matchMedia(query); setMatch(queryList.matches); function handleMatchesChange() { setMatch(queryList.matches); } queryList.addListener(handleMatchesChange); return () => { queryList.removeListener(handleMatchesChange); }; }, [query, supportMatchMedia]); return match; } export function testReset() { hydrationCompleted = false; } export default useMediaQuery;