const objecdiff = require('objecdiff');

// Alternatively:
import { diff } from 'objecdiff';

objecdiff.diff(objectA, objectB)

// Alternatively if using the `import` method shown above:
diff(objectA, objectB)

import { diff } from 'objecdiff';

let a = {
        firstName: 'Mike',
        lastName: 'R',
        city: 'Boston'
    },
    b = {
        firstName: 'Dan',
        name: 'Dan G',
        color: {
            favorite: 'blue'
        },
        city: 'Boston'
    };

console.log(diff(a, b));
// => [ { path: 'firstName', original: 'Mike', updated: 'Dan' },
// =>   { path: 'lastName', original: 'R', updated: undefined },
// =>   { path: 'name', original: undefined, updated: 'Dan G' },
// =>   { path: 'color.favorite', original: null, updated: 'blue' } ]