Error Response

Introduction

This module is used to format the error and send user defined error in response.

Installation

Requirements

• node.js v4.3
• npm

Install Process

• Clone project into your working directory.
• Open a terminal in your project root directory.
• Run npm install to install necessary dependencies.

Configuration

• In your project directory, under config/errors subdirectory, list errors in defined-erros.json in following structure

{
  "JOI": {
    "ERROR_NAME": {
     "code": "4000",
     "message": "Joi related error message"
    }
  },
  "ERROR_NAME": {
    "code": "6000",
    "message": "The error message to attach"
  }
}

All joi related errors will be listed under JOI object and other general errors will be listed as shown in the structure.

• In your project directory, go to config subdirectory and modify the following things in configuration file (i.e default.json).
  • Set url to attach additional url in Response
  • Set printError to true if you want to print error from module

For example, your configuration may look like as follows:

{
 "errorResponse": {
   "url": "https://www.smarterservices.com/errors/",
   "printError": false
 }
}

Running Application/Code

• require module from anywhere
• use formatError to format the error

const errorResponse = require('error-response');


const options = {
              values: {
                approvalSid: 'AP...',
                installSid: 'AI...'
              }
            };
const error = errorResponse.formatError('APPROVAL_NOT_FOUND_UNDER_INSTALL', options);

To generate the above error, the error object should be as follows

{
  "APPROVAL_NOT_FOUND_UNDER_INSTALL": {
    "code": "6001",
    "message": "approval '%approvalSid%' not found under '%installSid%'",
    "status": 404
  }
}

• Here approvalSid will be replaced by the given in options object.
• Default statusCode is 400, passing status in error object will override the default statusCode.
• It also expose errorResponse.failAction to wrap joi related error.

Running Locally

n/a

Running in Production

n/a

External Dependencies

n/a

Deployment

• n/a

Cronjobs

• n/a

Credits

• Muntasir Ahmed