MacPro
26 lines
691 B
JavaScript
26 lines
691 B
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.once = once;
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/**
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* Wraps a function so it is only executed once. Subsequent calls return the cached result.
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*
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* @param fn - The function to execute at most once
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* @returns A wrapper that lazily evaluates `fn` on first call and caches the result
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*
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* @example
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* ```ts
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* const getConfig = once(() => loadExpensiveConfig())
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* getConfig() // loads config
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* getConfig() // returns cached result
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* ```
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*/
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function once(fn) {
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let result = [];
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return () => {
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if (!result.length) {
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result = [fn()];
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}
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return result[0];
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};
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}
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//# sourceMappingURL=once.js.map
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