tError

Extended from common error, class TError allows create and cofigurate custom errors. Error's configuration allow using logging, user alert, debugging simple and fast.

Why?

Because i want unify work with errors. Make it simple and clean.

Installing

In terminal:

$ npm install @rnskv/terror

In code:

import { TErrorGroup } from '@rnskv/terror';

Setup

For working with errors you must did next steps:

• Create errors white list;
• Create Errors Groups, using list from 1 step;
• Generate new errors in your code :).

First

For example, create list with 404 and 500 errors codes. It's object where key is error's name, value - object with next fields: message, status, code.

const errorsList = {
  PAGE_NOT_FOUND: {
    message: 'Page not found :(', //Message for user
    name: 'REQUEST_ERROR', //Name for logging
    code: 404 //HTTP code
  },
  INTERNAL_SERVER_ERROR: {
    message: 'Internal Server Error', //Message for user
    name: 'RESPONSE_ERROR', //Name for logging
    code: 500 //HTTP code
  }
};

Second

Next create new Errors Group. You must specify type!

const params = {
  type: 'SERVER_ERROR'
};

const ServerErrors = new TErrorGroup(params, errorsList)

Great! Now you have new Errors Group and you can generate new errors.

Third

It's simple :)

  try {
    throw ServerErrors.create('PAGE_NOT_FOUND');
    // Or
    throw ServerErrors.create('INTERNAL_SERVER_ERROR');
  } catch(error) {
    console.log('Catch error:', error)
  }

Logging

You can connect your logger function to Errors Group. For example, use console.error. Connect it to ServerErrors.

ServerErrors.setLogger(console.error);

Now every errors throw in this group will call console.error.