js-inline-wat
v1.0.2
Published
A tool for bundling a WebAssembly .wat file into a .js library file.
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js-inline-wat
A tool for bundling a WebAssembly .wat file into a .js ES6 library file.
Installation
npm install -D js-inline-wat
Usage
$ inlinewat sample.wat [-o sample.wat.js] [-t decoded]
In package.json
scripts: {
"inlinewat": "inlinewat wat/sample.wat -o build/sample.js"
}
Options
--input file The .wat file to inline
-o, --output file The .js file to create
-t, --type typeName The type of JavaScript file to generate - "decoded" (default), "encoded", "fetch"
-h, --help Show this Help page
Types
Each type outputs a different variant of JavaScript file
-type fetch
Creates a JavaScript file with a default export function that can be used anywhere you could use fetch()
. e.g.
import fetchSample from 'sample'; // sample.js contains the bundled .wat
WebAssembly.instantiateStreaming(fetchSample)
.then(obj => obj.instance.exports.exported_func());
-type decoded
Creates a JavaScript file with a default export byte array containing the decoded .wat content
Note: You'll probably want to use WebAssembly.instantiateStreaming()
in most cases, as it is more efficient than instantiate()
.
import decodedSample from 'sample'; // sample.js contains the bundled .wat
WebAssembly.instantiate(decodedSample)
.then(obj => obj.instance.exports.exported_func());
-type encoded
Creates a JavaScript file with a default export string value containing the base64 encoded .wat file
import encodedSample from 'sample'; // sample.js contains the bundled .wat
// Decode the base64 string then compile...