Laravel Elixir provides a clean, fluent API for defining basic Gulp tasks for your Laravel application. Created by jeffrey way ! Elixir supports several common CSS and JavaScript pre-processors, and even testing tools. Using method chaining, Elixir allows you to fluently define your asset pipeline.

For example:

 elixir(function(mix) {

If you’ve ever been confused about how to get started with Gulp and asset compilation, you will love Laravel Elixir. However, you are not required to use it while developing your application. You are free to use any asset pipeline tool you wish, or even none at all.

please  refer laravel elixir documentation for more

lets talk about laravel elixir and what is the use of it ….