Lodash like _.get() function

get.js

const obj = {
    a: {
        b: {
            c: 1
        }
    },
    user: {
        id: {
            bbb: 123
        },
        files: [
            {name: 'Bashir'},
            {name: 'Umar'},
            {name: 'Ilez'},
        ]
    }
};

function getValue(obj, path) {
    var keys = path.split('.');
    var value = obj;
    var arrKey, key, i = 0;
    while (value && Object.keys(value).indexOf(keys[i] && keys[i].replace(/\[(.*)\]/, '')) >= 0) {
        key = keys[i].replace(/\[(.*)\]/, '');
        value = value[key];
        arrKey = keys[i++].match(/\[(.*)\]/);
        if (Array.isArray(value) && arrKey) {
            key = parseInt(arrKey[1]);
            value = value[key];
        }
    }
    return value;
}

console.log(getValue(obj, 'a.b.c')); // 1
console.log(getValue(obj, 'user.id.bbb')); // 123
console.log(getValue(obj, 'user.files[2].name')); // Ilez