@wasmer/io-devices NPM

`@wasmer/io-devices`

Isomorphic library to implement the experimental Wasmer I/O devices for the Wasmer-JS stack 🖼️🎮

Documentation for Wasmer-JS Stack can be found on the Wasmer Docs.

Features

This package provides the following features:

Scaffolds files used by the Wasmer Runtime I/O Devices, to allow WASI moduels that depend on these interfaces to run in the browser and Node! 📁
Allows reading the current RGBA FrameBuffer. 🖼️
Can send input events to the I/O Devices interface. ⌨️

Installation

For installing @wasmer/io-devices, just run this command in your shell:

npm install --save @wasmer/io-devices

Quick Start

import { WasmFs } from "@wasmer/wasmfs";
import { IoDevices } from "@wasmer/io-devices";

const wasmFs = new WasmFs();
const ioDevices = new IoDevices(wasmFs);

// Let's say we want to read the frame buffer,
// every time the buffer index display file is written to:
let callbackCalled = false;
const callback = () => {
  // Read the framebuffer
  console.log(ioDevices.getFrameBuffer); // Outputs a Uint8Array of the frame buffer

  callbackCalled = true;
};

// Set the callback, and write to the file to call it
ioDevices.setBufferIndexDisplayCallback(callback);
wasmFs.fs.writeFileSync("/_wasmer/dev/fb0/draw", "0");

callbackCalled === true; // This should be true, our callback is called!

@wasmer/io-devices is isomorphic, meaning this quick start should also work in Node with the appropriate Node syntax!