npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

child_pty-fixedv12

v3.0.11

Published

provides a child_process.spawn()-like interface with pty support.

Downloads

1,558

Readme

Build Status

child_pty

child_pty is a module for creating and interacting with pseudo terminals. It tries to be as minimal as possible and borrows most of its functionality from child_process.

API

See child_process with the following changes:

  • Only child_pty.spawn() is supported

child_pty.spawn()

  • options fields:
    • new field: options.columns: columns of the instanciated PTY.
    • new field: options.rows: rows of the instanciated PTY.
    • options.detached is ignored.
    • options.stdio allows 'pty' as array element. The value 'pty' indicates, that this fd is bound to the pty.
    • options.stdio will default to [ 'pty', 'pty', 'pty' ]

ChildProcess

ChildProcess of child_pty uses the same prototype as child_process. Its instances differentiate in the following:

  • new field: #pty points to a PtyRwStream that's associated with the child processes pty.
  • All file descriptors are bound to the pty in the #stdio array point to the the same object as #pty. This is also true for #stdin and #stdout.
  • If stderr is bound to the pty the field #stderr will be a dummy Event Emitter that will never emit any events.

PtyRwStream

PtyRwStream is a net.Socket with the following changes

  • #resize(size): resizes the underlying pty. The size attribute should have the following fields:
    • #size.columns: columns of the instanciated PTY.
    • #size.rows: rows of the instanciated PTY.
  • #ttyname: property with the name of the tty (eg: /dev/ttys016)
  • setattr(attr): sets terminal attributes. attr may be an object containing one or more of the following fields:
    • iflag: input modes
    • oflag: output modes
    • cflag: control modes
    • lflag: local modes for further explainations on the allowed values consider the termios(3) manpage.
  • getattr(attr): sets terminal attributes. attr may be an object containing one or more of the following fields:
    • iflag: input modes
    • oflag: output modes
    • cflag: control modes
    • lflag: local modes for further explainations on the allowed values consider the termios(3) manpage.
  • due to the nature of PTYs it's neither possible to get 'end' events from the underlying process when it closes its pty file descriptors nor will call #end() close the child processes file descriptor. To end the underlying process call ChildProcess#kill('SIGHUP') instead.
  • PtyRwStream will emit the 'end' Event when the child process exits. It will not emit the 'end' event if the child process closes its slave file descriptor. See above.

Examples

This example opens a PTY with /bin/sh, resizes the terminal, executes ls -l, and exits the shell.

var child_pty = require('child_pty');
var child = child_pty.spawn('/bin/sh', []);
child.stdout.on('resize', function() {
	console.log('New columns: ' + this.columns);
	console.log('New rows:    ' + this.rows);
}).pipe(process.stdout);
child.stdout.resize({ columns: 80, rows: 48 });
child.stdin.write('ls -l\n');
child.stdin.write('exit\n');

Changelog

  • v0.1 - initial release
  • v0.2 - fix job control for shells
  • v0.3 - API changes to fit child_process
  • v0.4 - remove deprecated APIs
  • v0.5 - MacOS support
  • v1.0 - Exposes TTY name to the API
  • v1.1 - Exposes tcgetattr/tcsetattr functions; node-4.0 support
  • v2.0 - child_pty now emits the error event when a child can't be spawned instead of printing an error to stdout.
  • v3.0 - child_pty IO handling has been rewritten. the end event is emitted on the pty when the child program exits. all fds opened on the pty point to the same Stream instance.