33 lines
1.0 KiB
JavaScript
33 lines
1.0 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var is_function_1 = require("./is-function");
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/**
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* _.memoize(calColor);
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* _.memoize(calColor, (...args) => args[0]);
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* @param f
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* @param resolver
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*/
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exports.default = (function (f, resolver) {
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if (!is_function_1.default(f)) {
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throw new TypeError('Expected a function');
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}
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var memoized = function () {
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var args = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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args[_i] = arguments[_i];
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}
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// 使用方法构造 key，如果不存在 resolver，则直接取第一个参数作为 key
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var key = resolver ? resolver.apply(this, args) : args[0];
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var cache = memoized.cache;
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if (cache.has(key)) {
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return cache.get(key);
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}
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var result = f.apply(this, args);
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// 缓存起来
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cache.set(key, result);
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return result;
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};
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memoized.cache = new Map();
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return memoized;
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});
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//# sourceMappingURL=memoize.js.map
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