react-query/lib/devtools/useMediaQuery.js

Hooks for managing, caching and syncing asynchronous and remote data in React

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;

exports.__esModule = true;
exports.default = useMediaQuery;

var _react = _interopRequireDefault(require("react"));

function useMediaQuery(query) {
  // Keep track of the preference in state, start with the current match
  const [isMatch, setIsMatch] = _react.default.useState(() => {
    if (typeof window !== 'undefined') {
      return window.matchMedia(query).matches;
    }
  }); // Watch for changes


  _react.default.useEffect(() => {
    if (typeof window !== 'undefined') {
      // Create a matcher
      const matcher = window.matchMedia(query); // Create our handler

      const onChange = ({
        matches
      }) => setIsMatch(matches); // Listen for changes


      matcher.addListener(onChange);
      return () => {
        // Stop listening for changes
        matcher.removeListener(onChange);
      };
    }
  }, [isMatch, query, setIsMatch]);

  return isMatch;
}