tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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memoizeLast.js (600B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
      4 
      5 export function memoizeLast(fn) {
      6  let lastArgs;
      7  let lastResult;
      8 
      9  const memoized = (...args) => {
     10    if (
     11      lastArgs &&
     12      args.length === lastArgs.length &&
     13      args.every((arg, i) => arg === lastArgs[i])
     14    ) {
     15      return lastResult;
     16    }
     17 
     18    lastArgs = args;
     19    lastResult = fn(...args);
     20 
     21    return lastResult;
     22  };
     23 
     24  return memoized;
     25 }
     26 
     27 export default memoizeLast;