@replit/ruspty - PTY for JavaScript through Rust FFI

A very thin wrapper around PTYs and processes.

const { Pty } = require('@replit/ruspty');

const pty = new Pty({
  command: '/bin/sh',
  args: [],
  envs: {},
  size: { rows: 24, cols: 80 },
  onExit: (...result) => {
    // TODO: Handle process exit.
  },
});

const read = pty.read;
const write = pty.write;

read.on('data', (chunk) => {
  // TODO: Handle data.
});
write.write('echo hello\n');

The biggest difference from existing PTY libraries is that this one works with Bun, and doesn't cross the FFI bridge for every input/output instead requiring the consumer to deal with the fd of the PTY.

Local Development

• npm install
• npm run build
• npm run test

Publishing

Following "Publish It" section from napi-rs docs:

1. git clean -f && npm install && npm run build
2. npm version [major|minor|patch]
3. Send that as a Pull Request to GitHub. Ensure that the commit message consisting only of x.y.z - this is how the CI decides to publish to npm!

NPM_TOKEN is part of the repo secrets, generated like this.