size lodash code example

Example 1: lodash deep clone object

const clone = require('lodash/clone'); 
const cloneDeep = require('lodash/clonedeep');

const shallowCopy = clone(originalObject);
const deepCopy = clonedeep(originalObject);

Example 2: lodash map

const _quote_filter = _.map(quote_state, (val, key) => {   if (val) {      return key   }})console.log(_quote_filter) //=> [ 'btc', undefined, undefined ]