Error handler middleware

the error handler can be used to handle different http errors

to install:

npm i @salma-dev/error-handler

to integerate it with your express:

commonjs:

const { RestApiErrorHandler } = require('@salma-dev/error-handler')

const app = require('express')()
..
  //app config
..

app.use(RestApiErrorHandler)

the handler will catch any error that is thrown inside your app routes

you can import different errors to throw in your app:

| Error | Description | Status code | | :--- | :----: | ---: | | NotFoundError |used to handle not found resource | 404 | | BadRequest | used to handle invalid data | 400 | | NotAuthorizedError | to deny authorization on some resource | 401 | | ForbiddenError |when the user is authenticated but has no permission to use the resource | 403 | | ConflictError | sometimes used to prevent data duplication | 409 | | RequestValidationError | this is useful is if you use express-validator, it takes the errors array and returns another with status | 400 |

you can import any of these errors and throw in your route handler like this:

const {NotFoundError}  = require('@salma-dev/error-handler')

...

//some code 

..


app.get('/resource/:id', function(req, res){
   //some code

   throw new NotFoundError()
})

this will cause the handler to return response with body like this:

{
    "errors": [{"message": "Not Found"}]
}