@react-hook/media-query/dist/esm/index.dev.mjs

React hooks that update when media queries change between matched and unmatched states.

import { useRef, useReducer, useEffect, useMemo } from 'react';

function queriesDidChange(prevQueries, nextQueries) {
  if (nextQueries === prevQueries) return false;
  var nextQueriesArr = Object.values(nextQueries);
  var prevQueriesArr = Object.values(prevQueries);
  if (nextQueriesArr.length !== prevQueriesArr.length) return true;
  if (nextQueriesArr.some((q, i) => q !== prevQueriesArr[i])) return true;
  var prevKeys = Object.keys(prevQueries);
  return Object.keys(nextQueries).some((n, i) => n !== prevKeys[i]);
}

function _ref(curr, key) {
  curr.matches[key] = false;
  curr.mediaQueries[key] = {};
  return curr;
}

function init(queries) {
  var queryKeys = Object.keys(queries);
  /* istanbul ignore next */

  if (typeof window === 'undefined') return queryKeys.reduce(_ref, {
    mediaQueries: {},
    matches: {}
  });
  return queryKeys.reduce((state, name) => {
    var mql = window.matchMedia(queries[name]);
    state.mediaQueries[name] = mql;
    state.matches[name] = mql.matches;
    return state;
  }, {
    mediaQueries: {},
    matches: {}
  });
}

function reducer(state, action) {
  function _ref2(prev, key) {
    prev[key] = state.mediaQueries[key].matches;
    return prev;
  }

  switch (action.type) {
    case 'updateMatches':
      return {
        matches: Object.keys(state.mediaQueries).reduce(_ref2, {}),
        mediaQueries: state.mediaQueries
      };

    case 'setQueries':
      return init(action.queries);
  }
}
/**
 * A hook that returns a [`MediaQueryMatches`](#mediaquerymatches) object which will
 * tell you if specific media queries matched, all media queries matched, or
 * any media queries matched. Matches in this hook will always return `false` when
 * rendering on the server.
 *
 * @param queryMap The media queries you want to match against e.g. `{screen: "screen", width: "(min-width: 12em)"}`
 */


function useMediaQueries(queryMap) {
  var prevQueries = useRef(queryMap);
  var [state, dispatch] = useReducer(reducer, queryMap, init);
  useEffect(() => {
    if (queriesDidChange(queryMap, prevQueries.current)) {
      dispatch({
        type: 'setQueries',
        queries: queryMap
      });
      prevQueries.current = queryMap;
    }
  }, [queryMap]);

  function _ref3() {
    return dispatch({
      type: 'updateMatches'
    });
  }

  function _ref4(mq) {
    var callback = _ref3;
    if (typeof mq.addListener !== 'undefined') mq.addListener(callback);else mq.addEventListener('change', callback);
    return callback;
  }

  useEffect(() => {
    var queries = Object.values(state.mediaQueries);
    var callbacks = queries.map(_ref4);

    function _ref5(mq, i) {
      if (typeof mq.addListener !== 'undefined') mq.removeListener(callbacks[i]);else mq.removeEventListener('change', callbacks[i]);
    }

    return () => {
      queries.forEach(_ref5);
    };
  }, [state.mediaQueries]);
  var {
    matches
  } = state;
  var matchValues = useMemo(() => Object.values(matches), [matches]);
  return {
    matches,
    matchesAny: matchValues.some(Boolean),
    matchesAll: matchValues.length > 0 && matchValues.every(Boolean)
  };
}
/**
 * A hook that returns `true` if the media query matched and `false` if not. This
 * hook will always return `false` when rendering on the server.
 *
 * @param query The media query you want to match against e.g. `"only screen and (min-width: 12em)"`
 */

function useMediaQuery(query) {
  return useMediaQueries(getObj(query)).matchesAll;
}
var cache = {};

function getObj(query) {
  if (cache[query] === void 0) cache[query] = {
    default: query
  };
  return cache[query];
}

export { useMediaQueries, useMediaQuery };
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