@spms-apps/ts-error NPM

Spms Apps Typescript Custom Error

A typescript error module, based on the Node.js Error object, which extends more properties and prints the error in Json object string.

Instalation

This is a Node.js module available through the npm registry.

Before installing, download and install Node.js.

Installation is done using the npm install command:

npm install @spms-apps/ts-error

Description

There are two types of error:

ApplicationError - Bugs in the application.
OperationalError - Run-time problems experienced by correctly-written programs;

All errors have a common set of properties:

Property	Type	Description
uid	string	The unique error identification
timestamp	Date	Timestamp value
name	string	The name of the generator error
message	string	Error message
stack	string	Description at which the Error was instantiated
stackMsg	string[]	Reduced stack informnation.

The error type Application adds one more property to the common set:

Property	Type	Description
code	number	The identification of the error nature

The error type Operational adds two more property to the common set:

Property	Type	Description
code	number	The identification of the error nature
statusCode	number	The identification of the error nature

Usage

To use this package you just need to import it and call the error class that produces the error that you want to throw:

import ApplicationError, OperationalError from '@spms-apps/ts-error';

throw new ApplicationError('The message..');
// Output in catch:
{ <ApplicationError Object>
          at method a
          (path a)
          at method b
          (path b)
          at method c
          (path c)
            ...
        name: 'ApplicationError',
        uid: '0A',
        timestamp: 2019-01-31T16:05:23.700Z,
        stackMsg:
         [ at method a
          (path pa),
          at method b
          (path pb), 
          at method c
          (path pc)],
        code: 600 }

throw new OperationalError('Http Bad request error message..', 400);
// Output in catch:
{ <OperationalError Object>
          at method a
          (path a)
          at method b
          (path b)
          at method c
          (path c)
            ...
        name: 'OperationalError',
        uid: '0B',
        timestamp: 2019-01-31T16:05:23.700Z,
        stackMsg:
         [ 'OperationalError: Http Bad request error message..',
           at method a
          (path a)
          at method b
          (path b) ],
        statusCode: 400, 
        code: 700 }