the-platform/useMedia.js

React Hooks and Suspense-ready Components for Web API's and elements

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useMedia = useMedia;

var _react = require("react");

var _json2mq = _interopRequireDefault(require("json2mq"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function useMedia(query) {
  var defaultMatches = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;

  var _useState = (0, _react.useState)(defaultMatches),
      _useState2 = _slicedToArray(_useState, 2),
      matches = _useState2[0],
      setMatches = _useState2[1];

  (0, _react.useEffect)(function () {
    var mediaQueryList = window.matchMedia(typeof query === 'string' ? query : (0, _json2mq.default)(query));
    var active = true;

    var listener = function listener() {
      if (!active) {
        return;
      }

      if (mediaQueryList.matches) {
        setMatches(true);
      } else {
        setMatches(false);
      }
    };

    mediaQueryList.addListener(listener);
    setMatches(mediaQueryList.matches);
    return function () {
      active = false;
      mediaQueryList.removeListener(listener);
    };
  }, [query]);
  return matches;
}