LukeChannings

// ensure the keys being passed is an array of key paths
// example: 'a.b' becomes ['a', 'b'] unless it was already ['a', 'b']
const keys = ks => Array.isArray(ks) ? ks : ks.split('.')

// traverse the set of keys left to right,
// returning the current value in each iteration.
// if at any point the value for the current key does not exist,
// return the default value
const deepGet = (o, kp, d) => keys(kp).reduce((o, k) => o && o[k] || d, o)