@findify/react-components/lib/helpers/useColumns.js

Findify react UI components

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

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; 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; }

import { isImmutable } from 'immutable';
import { useEffect, useMemo, useState } from 'react';
var cache = {};
export default (function (_media) {
  var defaultValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 12;

  var _useMemo = useMemo(function () {
    var media = isImmutable(_media) ? _media.toJS() : _media;
    var keys = media.sort(function (a, b) {
      return Number(b.width) - Number(a.width);
    }).map(function (_ref) {
      var width = _ref.width;
      return width;
    });
    return [keys, media];
  }, [_media]),
      _useMemo2 = _slicedToArray(_useMemo, 2),
      keys = _useMemo2[0],
      media = _useMemo2[1];

  var mediaQueryLists = keys.map(function (k) {
    return cache[k] || (cache[k] = window.matchMedia("(min-width: ".concat(k, "px)")));
  });

  var getValue = function getValue() {
    // Get index of first media query that matches
    var index = mediaQueryLists.findIndex(function (mql) {
      return mql.matches;
    });
    if (typeof keys[index] === 'undefined') return String(defaultValue);
    var match = media.find(function (_ref2) {
      var width = _ref2.width;
      return width === keys[index];
    });
    return String(match ? match.value : defaultValue);
  }; // State and setter for matched value


  var _useState = useState(getValue),
      _useState2 = _slicedToArray(_useState, 2),
      value = _useState2[0],
      setValue = _useState2[1];

  useEffect(function () {
    // Event listener callback
    // Note: By defining getValue outside of useEffect we ensure that it has ...
    // ... current values of hook args (as this hook callback is created once on mount).
    var handler = function handler() {
      return setValue(getValue);
    }; // Set a listener for each media query with above handler as callback.


    mediaQueryLists.forEach(function (mql) {
      return mql.addListener(handler);
    }); // Remove listeners on cleanup

    return function () {
      return mediaQueryLists.forEach(function (mql) {
        return mql.removeListener(handler);
      });
    };
  }, []);
  return value;
});