@lydell/node-pty

Smaller distribution of microsoft/node-pty.

• microsoft/node-pty ships with prebuilt binaries for multiple platforms. @lydell/node-pty only installs the prebuilt binaries needed for the current platform (depends on your package manager).
• microsoft/node-pty supports compiling using node-gyp on unsupported platforms, which requires more source files (about two and a half megabytes). @lydell/node-pty only works on platforms with prebuilt binaries and never calls node-gyp.
• microsoft/node-pty ships with Windows-specific and Unix-like-specific JavaScript code on all platforms. @lydell/node-pty only ships Windows-specific JavaScript files for Windows, and Unix-like-specific JavaScript files for non-Windows. This only saves a few tens of kilobytes, though.
• microsoft/node-pty is tens of megabytes. @lydell/node-pty is way less than one megabyte on macOS and Linux, and around half of microsoft/node-pty on Windows. The thing that takes the most space is microsoft/node-pty are the two Windows binaries it ships.

All in all, once microsoft/node-pty only ships the needed prebuilt binaries for the current platform, there probably isn’t much of a point to @lydell/node-pty anymore. It would only save a couple of megabytes (at the expense of not being able to compile on unsupported platforms).

@lydell/node-pty is built like this:

1. Download the original node-pty npm package.
2. Make one copy of it per supported platform.
3. For each copy, only include relevant files.
4. Make the @lydell/node-pty wrapper package, which depends on all the platform-specific packages using "optionalDependencies" in package.json, allowing package managers to only install the platform-specific package matching the current platform. The wrapper package only re-exports everything from the correct platform-specific package.

pty.js

microsoft/node-pty is forked from chjj/pty.js with the primary goals being to provide better support for later Node.js versions and Windows.

License

Copyright (c) 2012-2015, Christopher Jeffrey (MIT License).
Copyright (c) 2016, Daniel Imms (MIT License).
Copyright (c) 2018, Microsoft Corporation (MIT License).