panicit

panicit is a small library that could let you exit or throw error with helpful messages. It works in both browser and Node.js.

Getting start

npm i panicit

Usage

import {panic} from 'panicit'

panic('some error')

It will print

some reason
Uncaught Error: some reason
    at n (<anonymous>:2:57)
    at <anonymous>:1:1

with cause

You can provide the cause as well.

import {panic} from 'panicit'

panic('some error', {cause: 'some cause'})

It will print

some reason
[Cause] some cause
Error: some reason
    at n (<anonymous>:2:57)
    at <anonymous>:1:1

If you are using Node.js, you can also provide exit code.

import {panic} from 'panicit'

panic('some error', {cause: 'some cause', exitCode: 2})

Result

➜ node
> panic('some reason', {cause: 'some cause', exitCode: 2})
some reason
[Cause] some cause

➜ echo $?
2

Prevent exit

By default, panic will exit the program in Node.js, but you can set exit option to false to disable this behavior.

panic('some error', {exit: false})

Note that exit program can only be used in Node environment.

Default exit behavior

You can define whether should the program exit by default or not by using definePanicitConfig.

import {definePanicitConfig} from 'panicit'

definePanicitConfig({exit: false})

// this won't exit the program
panic('some error')

// you can still exit the program by set `exit` to `true` explicitly
panic('some error', {exit: true})

Options

Inline panic option, used as the second parameter of panic function.

type PanicOption = {
  /** Note the cause of why the error is triggered. */
  cause?: any
  /** Should log panic message. */
  silent?: boolean
  /** Only works in Node.js env. */
  exit?: boolean
  /** Only works in Node.js env. */
  exitCode?: number
}

Global panic config.

type PanicConfig = {
  /** Should log panic message. */
  silent?: boolean
  /** Only works in Node.js env. */
  exit?: boolean
  /** Only works in Node.js env. */
  exitCode?: number
}