Advanced Error

Node Js Error Extended class with advanced features

Install

    $ npm i --save @da-fat-company/advanced-error

AdvancedError

Throw using object

'use strict';

const HTTPStatus = require('http-status');
const AdvancedError = require('@da-fat-company/advanced-error');

throw new AdvancedError({
  title: 'Error title',
  message: 'Error description',
  status: HTTPStatus.BAD_REQUEST,
  privacy: AdvancedError.IS_PUBLIC,
  metadata: {
    foo: 'bar'
  }
});

Throw from standard Error

'use strict';

const HTTPStatus = require('http-status');
const AdvancedError = require('@da-fat-company/advanced-error');

const error = new Error('Uncaught exception');

throw AdvancedError.createFromError(error);

Throw from standard Error adding custom attributes as object

'use strict';

const HTTPStatus = require('http-status');
const AdvancedError = require('@da-fat-company/advanced-error');

const error = new Error('Uncaught exception');
const attributes = {
  title: 'Error title',
  status: HTTPStatus.BAD_REQUEST,
  privacy: AdvancedError.IS_PRIVATE,
  metadata: {
    foo: 'bar'
  }
}
throw AdvancedError.createFromError(error, attributes);

Throw from standard Error adding custom attributes as arguments (legacy style)

'use strict';

const HTTPStatus = require('http-status');
const AdvancedError = require('@da-fat-company/advanced-error');

const error = new Error('Uncaught exception');
const attributes = {
  title: 'Error title',
  status: HTTPStatus.BAD_REQUEST,
  privacy: AdvancedError.IS_PUBLIC,
  metadata: {
    foo: 'bar'
  }
}
throw AdvancedError.createFromError(
  error,
  'Error title',
  HTTPStatus.BAD_REQUEST, // Status code
  AdvancedError.IS_PUBLIC, // Privacy
  {foo: 'bar'} // Some metadata
);

Add Middlewares

Middlewares are functions called at the end of AdvancedError constructor. When you add a middleware it is available globaly for all your AdvancedError usage (only if you add middleware first).

'use strict';

const HTTPStatus = require('http-status');
const AdvancedError = require('@da-fat-company/advanced-error');

AdvancedError.use(() => {
  console.log('This log will be shown for each thrown AdvancedError');
});

AdvancedError.use((error) => {
  console.log('The current AdvancedError object is passed as first argument', error);
});

AdvancedError.use((error) => {
  if (error.privacy === AdvancedError.IS_PUBLIC) {
    console.log('Do something is the error is public');
  } else {
    console.log('Do something is the error is private');
  }
});

throw new AdvancedError({
  title: 'Error title',
  message: 'Error description',
  status: HTTPStatus.BAD_REQUEST,
  privacy: AdvancedError.IS_PUBLIC,
  metadata: {
    foo: 'bar'
  }
});

Remove Middlewares

'use strict';

const HTTPStatus = require('http-status');
const AdvancedError = require('@da-fat-company/advanced-error');

AdvancedError.resetMiddlewares(); // This will remove all existing middleware

throw new AdvancedError({
  title: 'Error title',
  message: 'Error description',
  status: HTTPStatus.BAD_REQUEST,
  privacy: AdvancedError.IS_PUBLIC,
  metadata: {
    foo: 'bar'
  }
});