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requirise-wasm

v0.0.2

Published

A tool to turn WASM into a requirable file that exports a valid WASM buffer

Downloads

1

Readme

Requirise-wasm

A utility module to convert wasm to a requirable buffer object that you can pass to WebAssembly.instantiate or WebAssembly.Module.

Installation

npm i requirise-wasm

Usage

This module is best used in a command line context, but it has an exported API you can make use of

Command line usage

requirise-wasm -i ./module.wasm -o ./module.wasm.js

Using requirise-wasm -h will print the following:

Usage: requireise-wasm [opts]

Available options:

  -i/--input PATH
        The path to the input WASM. Not needed if piping into this tool.
  -o/--output PATH
        The path to the output requirable file. Not needed if piping out from this tool.
  -v/--version
        Print the version.
  -h/--help
        Print this menu.

Programmatic usage

This module exports a function that can take a buffer and return a string that you can write to a file.

const requirise = require('requirise-wasm')
const fs = require('fs')

const someWASM = fs.readFileSync('/path/to/some.wasm')
const requirableString = requirise(someWasm)
fs.writeFileSync('/path/to/some.wasm.js')

Using the WASM you just wrote to a file

To use the WASM you just wrote to a file, simply require it and pass it to WebAssembly.Module or WebAssembly.instantiate

const wasmBuffer = require('/path/to/some.wasm.js')

// export a WASM module that is initialised synchronously
module.exports = new WebAssembly.Instance(WebAssembly.Module(wasmBuffer))

License

MIT