Runner for wasm articles

index.js

const fs = require("node:fs");
const filename = process.argv[2];

const wasmBuffer = fs.readFileSync(filename);
WebAssembly.instantiate(wasmBuffer).then((wasmModule) => {
  const { main } = wasmModule.instance.exports;
  const output = main();
  console.log(output);
});

Makefile

# wasm-tools comes from https://github.com/bytecodealliance/wasm-tools
# wat2wasm from https://github.com/WebAssembly/wabt would also work
%.wasm: %.wat
	wasm-tools parse $^ -o $@

%: %.wasm
	node index.js $^