Dude, VITE is the best builder. Simple variant for pet projects.

Vite

Next Generation Frontend Tooling

vitejs.dev


Honestly, if you want, you can use and webpack:

webpack

Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.. Latest version: 5.101.3, last published: 18 days ago...

www.npmjs.com