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create-boom-error

v3.0.2

Published

Simply create sub-classed Boom errors for Hapi applications.

Downloads

3,602

Readme

create-boom-error npm version Build Status

A simple Node.js library for easily creating classed Boom errors in Hapi applications.

Installation

npm install create-boom-error

Usage

createBoomError(name, statusCode, [message], [code])

Creates a Boom error.

  • name - The name of the error.
  • statusCode - the integer status code of the Boom error
  • message - an optional string or function which returns a string
  • code - an optional machine-keyable error status string

Create a simple error

const { createBoomError } = require('create-boom-error');

const MyError = createBoomError('MyError', 404, 'simple message', 'not_found');

const err = new MyError();

// err is an instance of MyError making it easy to check in tests
err instanceof MyError // => true

// err.code will match the code argument passed in
err.code // => 'not_found'

Note that if the optional code argument is NOT passed in then the .code field attached to the error will default to a decamelized, snake case version of the name. For example:

const MyError = createBoomError('MyError', 404, 'simple message');

const err = new MyError();

// err is an instance of MyError making it easy to check in tests
err instanceof MyError // => true

// err.code will return the name argument decamelized and in snake case
err.code // => 'my_error'

Create an error with a dynamic message

const MyError = createBoomError('MyError', 404, (num) => `You must have more than ${num} coins.`);

const err = new MyError(4);

// err now has the dynamic message
err.message // => 'You must have more than 4 coins.'

Development

Run tests

npm run test