Lodash vs Ramda vs ES6

assign.js

'use strict';

var _ = require('lodash'); 
var R = require('ramda');

var obj1 = {
    a:1,
    b:1,
}

var obj2 = {
    a:undefined,
    b:20,
    c:30
}

var obj3 = {
    a: 100 
}

let objES6 = Object.assign({}, obj1, obj2, obj3);
let objLodash = _.merge({}, obj1, obj2, obj3); // Lodash
let objRamda = R.mergeAll([{}, obj1, obj2, obj3]) // Ramda

console.log('ES6    ',objES6);
console.log('Lodash ',objLodash);
console.log('Ramda  ',objRamda);