A memoization algorithm that only caches the result of the latest set of arguments, where argument equality is determined via a provided equality function. The default areEqual function is a strict equality check on the first four arguments provided.

Quick Start

import memoOne from '@essentials/memoize-one'

const toUpper = memoOne(
  (value) => value.toUpperCase(),
  // are equal?
  (args, prevArgs) => args[0] === prevArgs[0]
)

toUpper('foo')
// FOO (uncached)
toUpper('foo')
// FOO (cached)
toUpper('foobar')
// FOOBAR (uncached)
toUpper('foo')
// FOO (uncached)

API

memoOne(fn: Function, areEqual?: Function): any

| Argument | Description | | -------- | ------------------------------------------------------------------------------- | | fn | The function you're memoizing the arguments and result of | | areEqual | An equality function. Return true if the arguments are equal, false if not. |

LICENSE

MIT