Error

Error is a library of extendable custom errors for node.js.

Installation

npm node-error --save

Usage

Errors in the library can be instantiated directly

var
    LoggableError = require('node-error').LoggableError;
 
throw new LoggableError('message');

or extended using .extend(name, [attributes]):

var
    LoggableError = require('node-error').LoggableError;
 
var
    attributes = function () {
        return {
            memoryUsage: process.memoryUsage()
        };
    },
    CustomError = LoggableError.extend('CustomError', attributes);

The attributes argument to the extend method is optional. It can be of type object or function. The function executes upon error instantiation and it should return an object.

var
    error = new CustomError('message');
 
console.log(error.attributes);

Errors

ExtendableError

ExtendableError is the base error to extend using .extend method.

LoggableError

LoggableError is an error having the stack property enumerable.

ProxiedError

var
    ProxiedError = require('node-error').ProxiedError;
 
var
    error = new ProxiedError(new Error());