axe-core/lib/core/utils/memoize.js

Accessibility engine for automated Web UI testing

import memoize from 'memoizee';

/**
 * Memoize a function.
 * @method memoize
 * @memberof axe.utils
 * @param {Function} fn Function to memoize
 * @return {Function}
 */
// TODO: es-modules._memoziedFns
axe._memoizedFns = [];
function memoizeImplementation(fn) {
  // keep track of each function that is memoized so it can be cleared at
  // the end of a run. each memoized function has its own cache, so there is
  // no method to clear all memoized caches. instead, we have to clear each
  // individual memoized function ourselves.
  const memoized = memoize(fn);
  axe._memoizedFns.push(memoized);
  return memoized;
}

export default memoizeImplementation;