A C file, a shell HTML file and a build script that compiles a C function into a callable WebAssembly function from JavaScript.
Follow the emscripten installation instructions until you are able to use the emcc command (up to the source ./emsdk_env.sh part). Clone this project and use the following commands to compile and execute some WebAssembly:
# Compiles the C code to Webassembley and moves it into the dist folder.
./build.sh
# Serve the compiled output with serve (must have Node.js installed).
npx serve dist