Lodash get in pure Javascript

get.js

function get(obj, path) {
  const steps = path.split('.');
  
  return steps.reduce((result, step) => {
    
    const isArrayItem = /\[\d+\]/.test(step);
    
    if (isArrayItem) {
      const [_, prop, index] = step.match(/^(.+)\[(\d+)\]$/)
      return get(result, `${prop}.${index}`);
    }
    
    return result[step];
  }, obj);
}


/*
const obj = {
  uuid: 'askldjlkasjdlkas',
  user: {
    name: 'John Doe',
    loginHistory: [
      {at: '01.02.2020'},
      {at: '14.12.2019'}
    ]
  }
}

console.log(get(obj, 'uuid')) // 'askldjlkasjdlkas'
console.log(get(obj, 'user.name')) // 'John Doe'
console.log(get(obj, 'user.loginHistory[1]')) // {at: '14.12.2019'}

const object = { 'a': [{ 'b': { 'c': 3 } }] };

console.log(get(object, 'a[0].b.c')) // 3
*/