feat: add a histrical wit-bindgen

__wasm/wit-bindgen-sample/wit-bindgen/crates/gen-js/tests/helpers.js

@@ -0,0 +1,26 @@
+import { readFileSync } from 'fs';
+import { WASI } from 'wasi';
+
+export function getWasm() {
+  return readFileSync(process.argv[2]);
+}
+
+class MyWasi {
+  constructor(wasi) {
+    this.wasi = wasi;
+  }
+
+  start(instance) {
+    if ('_start' in instance.exports) {
+      this.wasi.start(instance);
+    } else {
+      this.wasi.initialize(instance);
+    }
+  }
+}
+
+export function addWasiToImports(importObj) {
+  const wasi = new WASI();
+  importObj.wasi_snapshot_preview1 = wasi.wasiImport;
+  return new MyWasi(wasi);
+}