Create custom error response

 

Step by step

Check this post to try it step by step

How to run it

• Clone this repo.
• npm install.
• npm run dev.
• Visit on your browser http://localhost:7000/graphql.
• Make this query:

  {
    test {
      test
    }
  } 
  

Main idea

The main idea is to return a custom error with the statusCode on the response, also you can send any extra field, to do it you need to change just 2 files:

Constants.js

exports.errorType = {
  UNAUTHORIZED: {
    message: 'Authentication is needed to get requested response.',
    statusCode: 401
    // add here any extra field
  }
}

App.js

formatError: (err) => {
  const error = getErrorCode(err.message)
  return ({ 
    message: error.message, 
    statusCode: error.statusCode 
    // add here err.<YOUR_EXTRA_FIELD_CREATED_ON_CONSTANTS>
  })
}

In this case we just want to return a message and a statusCode

License

The MIT License

Copyright (c) 2018 Alejandro Estrada

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.