(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 = typeof globalThis !== 'undefined' ? globalThis : global || self, global.memoizeOne = factory());
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})(this, (function () { 'use strict';
|
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var safeIsNaN = Number.isNaN ||
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function ponyfill(value) {
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return typeof value === 'number' && value !== value;
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};
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function isEqual(first, second) {
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if (first === second) {
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return true;
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}
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if (safeIsNaN(first) && safeIsNaN(second)) {
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return true;
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}
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return false;
|
}
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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 (!isEqual(newInputs[i], lastInputs[i])) {
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return false;
|
}
|
}
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return true;
|
}
|
|
function memoizeOne(resultFn, isEqual) {
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if (isEqual === void 0) { isEqual = areInputsEqual; }
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var cache = null;
|
function memoized() {
|
var newArgs = [];
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for (var _i = 0; _i < arguments.length; _i++) {
|
newArgs[_i] = arguments[_i];
|
}
|
if (cache && cache.lastThis === this && isEqual(newArgs, cache.lastArgs)) {
|
return cache.lastResult;
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}
|
var lastResult = resultFn.apply(this, newArgs);
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cache = {
|
lastResult: lastResult,
|
lastArgs: newArgs,
|
lastThis: this,
|
};
|
return lastResult;
|
}
|
memoized.clear = function clear() {
|
cache = null;
|
};
|
return memoized;
|
}
|
|
return memoizeOne;
|
|
}));
|
