solutions/tinygo/index.html

<!doctype html>
<!--
Copyright 2018 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.
-->
<html>

<head>
	<meta charset="utf-8">
	<title>TinyGo WASM</title>
</head>

<body>
	<!--
	Add the following polyfill for Microsoft Edge 17/18 support:
	<script src="https://cdn.jsdelivr.net/npm/text-encoding@0.7.0/lib/encoding.min.js"></script>
	(see https://caniuse.com/#feat=textencoder)
	-->
	<!-- cp $(tinygo env TINYGOROOT)/targets/wasm_exec.js ./tinygo_wasm_exec.js -->
	<script src="tinygo_wasm_exec.js"></script>

	<script>
	if (!WebAssembly.instantiateStreaming) { // polyfill
		WebAssembly.instantiateStreaming = async (resp, importObject) => {
			const source = await (await resp).arrayBuffer();
			return await WebAssembly.instantiate(source, importObject);
		};
	}

	;(async () => {
			const go = new Go()
			const moduleBytes = fetch("./tinygo.wasm");
			const module = await WebAssembly.instantiateStreaming(moduleBytes, go.importObject);

			go.run(module.instance)

			console.log( 'add res: ', module.instance.exports.add(1, 2) )
			console.log( 'Keccak256 res:', window['Keccak256']('hello world') )
	})()
	</script>

</body>
</html>