Function memoizeCompare

src/utils/function.js:64–89

(fn, isEqual)

 * @returns {function}
 */
export function memoizeCompare (fn, isEqual) {
  const memoize = function memoize () {
    const args = []
    for (let i = 0; i < arguments.length; i++) {
      args[i] = arguments[i]
    }

    for (let c = 0; c < memoize.cache.length; c++) {
      const cached = memoize.cache[c]

      if (isEqual(args, cached.args)) {
        // TODO: move this cache entry to the top so recently used entries move up?
        return cached.res
      }
    }

    const res = fn.apply(fn, args)
    memoize.cache.unshift({ args, res })

    return res
  }

  memoize.cache = []

  return memoize
}