grovel

Disclaimer: this library is tailor-made for another project. No attempt will be made to spin it into its own project / PRs with new features will be ignored.

A collection of utilities to handle almost-immutable data.

The idea is to be able to do oldState === newState or oldState.a.b.c === newState.a.b.c rather than _.isEqual. Hence, assocIn generates a lot of shallow copies. Oh well.

Usage

The recommended way to use grovel is to use babel with function binding, which allows you to write code like this:

import {assocIn, getIn} from 'grovel'

function doSomething () {
  const a = {}::assocIn(['earth', 'france', 'cheese'], 'camembert')
  const france = a::getIn(['earth', 'france'])
  assert.same(france, {cheese: 'camembert'})

  const b = a::assocIn(['earth', 'england', 'cheese'], 'cheddar')
  assert.same(england, {cheese: 'cheddar'})

  const france2 = b::getIn(['earth', 'france'])
  assert(france2 === france)
}

However, grovel/core exports regular old functions, if that's more your style.