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45 lines
1.3 KiB
JavaScript
Vendored
45 lines
1.3 KiB
JavaScript
Vendored
(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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typeof define === 'function' && define.amd ? define(factory) :
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(global = global || self, global.memoizeOne = factory());
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}(this, function () { 'use strict';
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function areInputsEqual(newInputs, lastInputs) {
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if (newInputs.length !== lastInputs.length) {
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return false;
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}
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for (var i = 0; i < newInputs.length; i++) {
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if (newInputs[i] !== lastInputs[i]) {
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return false;
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}
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}
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return true;
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}
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function memoizeOne(resultFn, isEqual) {
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if (isEqual === void 0) { isEqual = areInputsEqual; }
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var lastThis;
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var lastArgs = [];
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var lastResult;
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var calledOnce = false;
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function memoized() {
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var newArgs = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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newArgs[_i] = arguments[_i];
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}
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if (calledOnce && lastThis === this && isEqual(newArgs, lastArgs)) {
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return lastResult;
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}
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lastResult = resultFn.apply(this, newArgs);
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calledOnce = true;
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lastThis = this;
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lastArgs = newArgs;
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return lastResult;
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}
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return memoized;
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}
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return memoizeOne;
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}));
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