I have handed the wast-loader package over to @xtuc
Find the latest source here https://github.com/xtuc/webassemblyjs/tree/master/packages/wast-loader
Webpack loader for loading WebAssembly s-expressions from .wat or .wast files
The loader returns the compiled .wasm as a Buffer that can passed to WebAssembly.compile() or WebAssembly.instantiate()
Install
npm install --save-dev wast-loader
Usage
In webpack.config.js
module: {
rules: [
{ test: /\.was?t$/, loader: "wast-loader", exclude: /node_modules/ }
]
}Now you can write a .wat file such as
;; exports function square() that multiplies the input number with itself
(module
(func (export "square") (param $i i32) (result i32)
get_local $i
get_local $i
i32.mul
)
)And use it with
import square from "./square.wat";
WebAssembly.instantiate(square)
.then(result => {
let squared = result.instance.exports.square(2);
console.log("2 squared is", squared);
});