Just in time compiler compiles each file separately and it’s mostly compiled in the browser. You don’t have to build your project again after changing your code.
Most compiling is done on the browser side, so it will take less compiling time.
If you have a big project or a situation where some of your components don’t come in use most of the time then you should use the Just in time compiler.
Just in Time compiler is best when your application is in local development.
