https://github.com/ehmicky/human-signals
Human-friendly process signals
https://github.com/ehmicky/human-signals
error-handling es6 exit exitcode handlers interrupts irq javascript linux macos nodejs operating-system process sigint signal signals sigterm status typescript windows
Last synced: 4 days ago
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Human-friendly process signals
- Host: GitHub
- URL: https://github.com/ehmicky/human-signals
- Owner: ehmicky
- License: apache-2.0
- Created: 2019-10-11T15:13:49.000Z (over 5 years ago)
- Default Branch: main
- Last Pushed: 2025-03-29T02:43:42.000Z (17 days ago)
- Last Synced: 2025-04-03T11:47:36.186Z (11 days ago)
- Topics: error-handling, es6, exit, exitcode, handlers, interrupts, irq, javascript, linux, macos, nodejs, operating-system, process, sigint, signal, signals, sigterm, status, typescript, windows
- Language: JavaScript
- Homepage:
- Size: 7.76 MB
- Stars: 280
- Watchers: 2
- Forks: 10
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project
- awesome-cross-platform-nodejs - human-signals - Human-friendly process signals. (Libraries / Signals)
- awesome-list - human-signals - friendly process signals | ehmicky | 229 | (JavaScript)
- stars - human-signals - friendly process signals | ehmicky | 280 | (JavaScript)
- stars - human-signals - friendly process signals | ehmicky | 281 | (JavaScript)
README
[](https://www.npmjs.com/package/human-signals)
[](/src/main.d.ts)
[](https://codecov.io/gh/ehmicky/human-signals)
[](https://fosstodon.org/@ehmicky)
[](https://medium.com/@ehmicky)
Human-friendly process signals.
This is a map of known process signals with some information about each signal.
Unlike
[`os.constants.signals`](https://nodejs.org/api/os.html#os_signal_constants)
this includes:
- human-friendly [descriptions](#description)
- [default actions](#action), including whether they [can be prevented](#forced)
- whether the signal is [supported](#supported) by the current OS
# Example
```js
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
```bash
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](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c),
not `require()`. If TypeScript is used, it must be configured to
[output ES modules](https://www.typescriptlang.org/docs/handbook/esm-node.html),
not CommonJS.
# Usage
## signalsByName
_Type_: `object`
Object whose keys are signal [names](#name) and values are
[signal objects](#signal).
## signalsByNumber
_Type_: `object`
Object whose keys are signal [numbers](#number) and values are
[signal objects](#signal).
## 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)`](https://nodejs.org/api/process.html#process_signal_events).
The list of supported signals
[is OS-specific](https://github.com/ehmicky/cross-platform-node-guide/blob/main/docs/6_networking_ipc/signals.md#cross-platform-signals).
### 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](../../issues).
Everyone is welcome regardless of personal background. We enforce a
[Code of conduct](CODE_OF_CONDUCT.md) 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](CONTRIBUTING.md). Pull requests are welcome!
Thanks go to our wonderful contributors:
