1 files changed, 49 insertions, 0 deletions
diff --git a/misc/wasm/wasm_exec_node.js b/misc/wasm/wasm_exec_node.js
new file mode 100644
index 0000000..f9200ca
--- /dev/null
+++ b/misc/wasm/wasm_exec_node.js
@@ -0,0 +1,49 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+"use strict";
+
+if (process.argv.length < 3) {
+	console.error("usage: go_js_wasm_exec [wasm binary] [arguments]");
+	process.exit(1);
+}
+
+globalThis.require = require;
+globalThis.fs = require("fs");
+globalThis.TextEncoder = require("util").TextEncoder;
+globalThis.TextDecoder = require("util").TextDecoder;
+
+globalThis.performance = {
+	now() {
+		const [sec, nsec] = process.hrtime();
+		return sec * 1000 + nsec / 1000000;
+	},
+};
+
+const crypto = require("crypto");
+globalThis.crypto = {
+	getRandomValues(b) {
+		crypto.randomFillSync(b);
+	},
+};
+
+require("./wasm_exec");
+
+const go = new Go();
+go.argv = process.argv.slice(2);
+go.env = Object.assign({ TMPDIR: require("os").tmpdir() }, process.env);
+go.exit = process.exit;
+WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject).then((result) => {
+	process.on("exit", (code) => { // Node.js exits if no event handler is pending
+		if (code === 0 && !go.exited) {
+			// deadlock, make Go print error and stack traces
+			go._pendingEvent = { id: 0 };
+			go._resume();
+		}
+	});
+	return go.run(result.instance);
+}).catch((err) => {
+	console.error(err);
+	process.exit(1);
+});