Deep diving in object to get a value (based on _.get from lodash)

deep-object-get.js

const stringToPath = (path) => {
  const pattern = /\[([0-9]+)\]/g;
  if (pattern.test(path)) return path.replace(pattern, '.$1').split('.');
  return path.split('.');
};

// First Approach:
const deepGet = (source, path, defaultValue) => {
  const props = stringToPath(path);

  if (source === undefined || source === null) return defaultValue;

  if (props.length === 0) return obj;

  const result = source[props[0]];
  const remainingPath = props.slice(1);

  if(!remainingPath.length) return result;

  return deepGet(result, remainingPath.join('.'), defaultValue);
}

// Second Approach:
const _deepGet = (source, path, defaultArgument) => {
  return stringToPath(path).reduce((nestedObject, key) => {
    return nestedObject && key in nestedObject ? nestedObject[key] : void 0;
  }, source) || defaultArgument;
};

const data = {
    User: {
        Profile: {
            Address: [
              [{ Home: "Hello" }]
            ]
        }
    }
};

console.log('First Approach:', deepGet(data, "User.Profile.Address[0][0].Home", "Default Value"));
console.log('Second Approach:', _deepGet(data, "User.Profile.Address[0][0].Home", "Default Value"))