JavaScript processing

- [Instructor] Mix supports not just CSS processing, … but also JavaScript processing. … Open up our webpack.mix.js file in the root … of our project again. … The line, 14, in this file, mix.js, … does four different and unique things. … It enables you to use ES 2015 syntax … in your JavaScript files, supports using JavaScript modules, … compiles view files, and minifies your JavaScript … when it needs to for a production environment. … Well what else can this do? … A really common operation, for instance, … is we might want to add source maps in development. … So if you add, after line 14, on line 15, … .sourceMaps, this will add source maps … into our application. … If we save this, go to our terminal, … and run the command npm run prod, … you'll see that in addition to our CSS JavaScript, … we also generated a JavaScript map file. … These source maps make it easier to determine … from the compressed and compiled JavaScript … where exactly the exact line of code is coming from. … Go back to our mix file and we can add, …