Elixir to Mix

Elixir is no longer working for me so I'm planning on moving over to Mix. I want to make sure I understand and am doing this correctly before moving all my stuff over.

Is it as simple as changing this...

elixir(function(mix) {
    mix.scripts([
        'jquery.core.js',
        'jquery.app.js',
    ], 'public/js/app.js');
});

to this?

mix.scripts([
    'jquery.core.js',
    'jquery.app.js',
], 'public/js/app.js');

Basically just removing the elixir(function(mix) {?