This is a very simple 3d rendering engine based on webgl2. It is able to draw simple 3d geometry in your web page with only a few lines of codes. It is very simple but it may be a good startup for you to learn webgl.
To install:
include <script src="../../dist/re3d.js"></script> in your html file.
To build:
run npm run build
The examples in the examples folder may help you to understand how it works.