Zozlib.js

Unofficial Implementation of Subset of Raylib API in JavaScript so you can use it from WebAssembly. Intended as a simpler Web version of Raylib that does not require Emscripten.

Warning

This is a Research Project and not guaranteed to be useful in present or/and future! If you quickly need to port your Raylib game to Web just follow these instructions: Working for Web (HTML5)

Main Idea

The main idea is to enable a very specific style of Programming in C for WebAssembly without Emscripten but for Raylib. The current limitation is that Zozlib.js is not fully implemented, but it does not mean it is useless! If you have a Game that uses only implemented function you can use Zozlib.js. And if only few needed functions are not implemented you can implement them and submit a PR thus improving the library for future uses.

We have no plans to replace the official Emscripten version of Raylib. This is a Reasearch Project intended to explore how far this approach can be pushed.

Start Demo Locally

The demo is deployed to GitHub pages: antonpieper.github.io/zozlib.js But you can run it locally.

$ python3 -m http.server 6969
<browser> http://localhost:6969/

The browser entrypoint now runs directly from src/main.js, and the project no longer requires a TypeScript compile step.

Type safety is enforced via JSDoc + static checking:

pnpm run typecheck

Build Demos

clang -o nob nob.c
./nob

./nob selects compilers this way:

• Native builds use ${CC} if set, otherwise clang.
• WASM builds use ${WASM_CC} if set; otherwise ${CC}

On systems where only a versioned clang supports WASM, run for example:

WASM_CC=clang-21 ./nob