Marc Mintel
5397309103
Some checks failed
Build & Deploy / 🔍 Prepare (push) Successful in 20s
Build & Deploy / 🧪 QA (push) Failing after 34s
Build & Deploy / 🏗️ Build (push) Has started running
Build & Deploy / 🚀 Deploy (push) Has been cancelled
Build & Deploy / 🧪 Smoke Test (push) Has been cancelled
Build & Deploy / ⚡ Lighthouse (push) Has been cancelled
Build & Deploy / 🔔 Notify (push) Has been cancelled
38 lines
711 B
Plaintext
38 lines
711 B
Plaintext
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
/**
|
|
* @template T
|
|
* @typedef {() => T} FunctionReturning
|
|
*/
|
|
|
|
/**
|
|
* @template T
|
|
* @param {FunctionReturning<T>} fn memorized function
|
|
* @returns {FunctionReturning<T>} new function
|
|
*/
|
|
const memoize = (fn) => {
|
|
let cache = false;
|
|
/** @type {T | undefined} */
|
|
let result;
|
|
return () => {
|
|
if (cache) {
|
|
return /** @type {T} */ (result);
|
|
}
|
|
|
|
result = fn();
|
|
cache = true;
|
|
// Allow to clean up memory for fn
|
|
// and all dependent resources
|
|
/** @type {FunctionReturning<T> | undefined} */
|
|
(fn) = undefined;
|
|
return /** @type {T} */ (result);
|
|
};
|
|
};
|
|
|
|
module.exports = memoize;
|