tiny version of lodash.get https://lodash.com/docs#get

get.js

const get = (obj = {}, path = '', defaultValue) =>
  path
    .replace(/\[(.+?)\]/g, '.$1')
    .split('.')
    .reduce((o, key) => o[key], obj) || defaultValue;


// PERFORMANCE
// It's slower than lodash (surprise surprise), but it's about 97% smaller:
// https://jsperf.com/get-object-props/4

// EXAMPLE
// const obj = {
//     a: { b: 'b' }
// };
// get(obj, 'a') => { b: 'b' }
// get(obj, 'a.b') => 'b'
// get(obj, 'a[b]') => 'b'
// get(obj, 'asdf') => undefined
// get(obj, 'asdf', {}) => {}