https://github.com/fernandomoraes/common-exceptions

common exceptions for nodejs
https://github.com/fernandomoraes/common-exceptions

Last synced: 13 days ago
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common exceptions for nodejs

• Host: GitHub
• URL: https://github.com/fernandomoraes/common-exceptions
• Owner: fernandomoraes
• Created: 2016-12-17T19:55:45.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2016-12-17T21:06:27.000Z (almost 8 years ago)
• Last Synced: 2024-10-15T09:28:21.896Z (22 days ago)
• Language: JavaScript
• Homepage:
• Size: 3.91 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
common-exceptions

=========

Common exceptions to help handle easily exceptions in nodejs application

## Installation

`npm install --save common-exceptions`

## Usage

```javascript

var exceptions = require('common-exceptions');

var EntityNotFoundException = exceptions.EntityNotFoundException;

try {

  foo();

} catch (err) {

  console.log(err instanceof EntityNotFoundException); //logs true

}

function foo() {

  throw new EntityNotFoundException('Not found entity with id 2');

}

```

## Exceptions

Currently there are the following exceptions for use:

* EntityNotFoundException

* ValidationException

* IllegalArgumentException

## Examples

### Global express exception handler

```javascript

var app = require('express').app();

var ValidationException = require('common-exceptions').ValidationException;

app.post('/users', (req, res) => {

    let user = req.body;

    if (user.age <= 18) {

      throw new ValidationException('users must be over 18 years old!');

    }

});

app.use((err, req, res, next) => {

  if (err instanceof ValidationException) {

    res.status(422).send({ message: err.message });

  }

});

```

## TODO

* Add tests

* Allow to register new exceptions in runtime