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- (function (global, factory) {
- if (typeof define === "function" && define.amd) {
- define('Reselect', ['exports'], factory);
- } else if (typeof exports !== "undefined") {
- factory(exports);
- } else {
- var mod = {
- exports: {}
- };
- factory(mod.exports);
- global.Reselect = mod.exports;
- }
- })(this, function (exports) {
- 'use strict';
-
- exports.__esModule = true;
- exports.defaultMemoize = defaultMemoize;
- exports.createSelectorCreator = createSelectorCreator;
- exports.createStructuredSelector = createStructuredSelector;
-
- function _toConsumableArray(arr) {
- if (Array.isArray(arr)) {
- for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) {
- arr2[i] = arr[i];
- }
-
- return arr2;
- } else {
- return Array.from(arr);
- }
- }
-
- function defaultEqualityCheck(a, b) {
- return a === b;
- }
-
- function defaultMemoize(func) {
- var equalityCheck = arguments.length <= 1 || arguments[1] === undefined ? defaultEqualityCheck : arguments[1];
-
- var lastArgs = null;
- var lastResult = null;
- return function () {
- for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
- args[_key] = arguments[_key];
- }
-
- if (lastArgs === null || lastArgs.length !== args.length || !args.every(function (value, index) {
- return equalityCheck(value, lastArgs[index]);
- })) {
- lastResult = func.apply(undefined, args);
- }
- lastArgs = args;
- return lastResult;
- };
- }
-
- function getDependencies(funcs) {
- var dependencies = Array.isArray(funcs[0]) ? funcs[0] : funcs;
-
- if (!dependencies.every(function (dep) {
- return typeof dep === 'function';
- })) {
- var dependencyTypes = dependencies.map(function (dep) {
- return typeof dep;
- }).join(', ');
- throw new Error('Selector creators expect all input-selectors to be functions, ' + ('instead received the following types: [' + dependencyTypes + ']'));
- }
-
- return dependencies;
- }
-
- function createSelectorCreator(memoize) {
- for (var _len2 = arguments.length, memoizeOptions = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
- memoizeOptions[_key2 - 1] = arguments[_key2];
- }
-
- return function () {
- for (var _len3 = arguments.length, funcs = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
- funcs[_key3] = arguments[_key3];
- }
-
- var recomputations = 0;
- var resultFunc = funcs.pop();
- var dependencies = getDependencies(funcs);
-
- var memoizedResultFunc = memoize.apply(undefined, [function () {
- recomputations++;
- return resultFunc.apply(undefined, arguments);
- }].concat(memoizeOptions));
-
- var selector = function selector(state, props) {
- for (var _len4 = arguments.length, args = Array(_len4 > 2 ? _len4 - 2 : 0), _key4 = 2; _key4 < _len4; _key4++) {
- args[_key4 - 2] = arguments[_key4];
- }
-
- var params = dependencies.map(function (dependency) {
- return dependency.apply(undefined, [state, props].concat(args));
- });
- return memoizedResultFunc.apply(undefined, _toConsumableArray(params));
- };
-
- selector.resultFunc = resultFunc;
- selector.recomputations = function () {
- return recomputations;
- };
- selector.resetRecomputations = function () {
- return recomputations = 0;
- };
- return selector;
- };
- }
-
- var createSelector = exports.createSelector = createSelectorCreator(defaultMemoize);
-
- function createStructuredSelector(selectors) {
- var selectorCreator = arguments.length <= 1 || arguments[1] === undefined ? createSelector : arguments[1];
-
- if (typeof selectors !== 'object') {
- throw new Error('createStructuredSelector expects first argument to be an object ' + ('where each property is a selector, instead received a ' + typeof selectors));
- }
- var objectKeys = Object.keys(selectors);
- return selectorCreator(objectKeys.map(function (key) {
- return selectors[key];
- }), function () {
- for (var _len5 = arguments.length, values = Array(_len5), _key5 = 0; _key5 < _len5; _key5++) {
- values[_key5] = arguments[_key5];
- }
-
- return values.reduce(function (composition, value, index) {
- composition[objectKeys[index]] = value;
- return composition;
- }, {});
- });
- }
- });
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