init project

node_modules/@rolldown/binding-wasm32-wasi/wasi-worker.mjs

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+import fs from "node:fs";
+import { createRequire } from "node:module";
+import { parse } from "node:path";
+import { WASI } from "node:wasi";
+import { parentPort, Worker } from "node:worker_threads";
+
+const require = createRequire(import.meta.url);
+
+const {
+  instantiateNapiModuleSync,
+  MessageHandler,
+  getDefaultContext,
+  emnapiAsyncWorkPlugin,
+  emnapiTSFNPlugin,
+} = require("@napi-rs/wasm-runtime");
+
+if (parentPort) {
+  parentPort.on("message", (data) => {
+    globalThis.onmessage({ data });
+  });
+}
+
+Object.assign(globalThis, {
+  self: globalThis,
+  require,
+  Worker,
+  importScripts: function (f) {
+    ;(0, eval)(fs.readFileSync(f, "utf8") + "//# sourceURL=" + f);
+  },
+  postMessage: function (msg) {
+    if (parentPort) {
+      parentPort.postMessage(msg);
+    }
+  },
+});
+
+const emnapiContext = getDefaultContext();
+
+const __rootDir = parse(process.cwd()).root;
+
+const handler = new MessageHandler({
+  onLoad({ wasmModule, wasmMemory }) {
+    const wasi = new WASI({
+      version: 'preview1',
+      env: process.env,
+      preopens: {
+        [__rootDir]: __rootDir,
+      },
+    });
+
+    return instantiateNapiModuleSync(wasmModule, {
+      childThread: true,
+      wasi,
+      context: emnapiContext,
+      // The wasm links a "basic" emnapi archive (no C async-work /
+      // threadsafe-function implementations), so every thread that
+      // instantiates it must provide the JavaScript implementations
+      // through the emnapi plugins.
+      plugins: [emnapiAsyncWorkPlugin, emnapiTSFNPlugin],
+      overwriteImports(importObject) {
+        importObject.env = {
+          ...importObject.env,
+          ...importObject.napi,
+          ...importObject.emnapi,
+          memory: wasmMemory
+        };
+      },
+    });
+  },
+});
+
+globalThis.onmessage = function (e) {
+  handler.handle(e);
+};