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human-signals

Human-friendly process signals

    6.0.0latest
    GitHub
    npm

Version published
Maintainers
1
Weekly downloads
58,041,131
increased by5.51%

Weekly downloads

Package description

What is human-signals?

The human-signals npm package is a library that provides human-readable descriptions and other information for system signals. It allows developers to understand and handle system signals in a more user-friendly way.

What are human-signals's main functionalities?

Getting human-readable information for signals

This feature allows you to retrieve information about a signal, such as its description, by using its name. The example code retrieves information about the SIGINT signal.

const { signalsByName } = require('human-signals');
const info = signalsByName['SIGINT'];
console.log(info);

Listing all signals with their information

This feature provides a list of all system signals along with their human-readable descriptions and other relevant information. The example code logs all available signals to the console.

const { signals } = require('human-signals');
console.log(signals);

Other packages similar to human-signals

Readme

Source

Node TypeScript Codecov Mastodon Medium

Human-friendly process signals.

This is a map of known process signals with some information about each signal.

Unlike os.constants.signals this includes:

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Example

import { signalsByName, signalsByNumber } from 'human-signals'

console.log(signalsByName.SIGINT)
// {
//   name: 'SIGINT',
//   number: 2,
//   description: 'User interruption with CTRL-C',
//   supported: true,
//   action: 'terminate',
//   forced: false,
//   standard: 'ansi'
// }

console.log(signalsByNumber[8])
// {
//   name: 'SIGFPE',
//   number: 8,
//   description: 'Floating point arithmetic error',
//   supported: true,
//   action: 'core',
//   forced: false,
//   standard: 'ansi'
// }

Install

npm install human-signals

This package works in Node.js >=18.18.0.

This is an ES module. It must be loaded using an import or import() statement, not require(). If TypeScript is used, it must be configured to output ES modules, not CommonJS.

Usage

signalsByName

Type: object

Object whose keys are signal names and values are signal objects.

signalsByNumber

Type: object

Object whose keys are signal numbers and values are signal objects.

signal

Type: object

Signal object with the following properties.

name

Type: string

Standard name of the signal, for example 'SIGINT'.

number

Type: number

Code number of the signal, for example 2. While most number are cross-platform, some are different between different OS.

description

Type: string

Human-friendly description for the signal, for example 'User interruption with CTRL-C'.

supported

Type: boolean

Whether the current OS can handle this signal in Node.js using process.on(name, handler).

The list of supported signals is OS-specific.

action

Type: string
Enum: 'terminate', 'core', 'ignore', 'pause', 'unpause'

What is the default action for this signal when it is not handled.

forced

Type: boolean

Whether the signal's default action cannot be prevented. This is true for SIGTERM, SIGKILL and SIGSTOP.

standard

Type: string
Enum: 'ansi', 'posix', 'bsd', 'systemv', 'other'

Which standard defined that signal.

Support

For any question, don't hesitate to submit an issue on GitHub.

Everyone is welcome regardless of personal background. We enforce a Code of conduct in order to promote a positive and inclusive environment.

Contributing

This project was made with ❤️. The simplest way to give back is by starring and sharing it online.

If the documentation is unclear or has a typo, please click on the page's Edit button (pencil icon) and suggest a correction.

If you would like to help us fix a bug or add a new feature, please check our guidelines. Pull requests are welcome!

Thanks go to our wonderful contributors:


ehmicky

💻 🎨 🤔 📖

electrovir

💻

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Last updated on 28 Oct 2023

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