SmartError

Subclass of Node.js Error for unification of errors.

The instance has message and code attributes for recognizing the error type and base info about the Error. The constructor accepts the payload field which is parsed as instance's attributes.

Installation

$ npm install smart-error

Usage

// This will override default Node.js Error
import Error from 'smart-error';

// It throws the catchable error
throw new Error('User already exists in database', 'existing_user', { email: 'test@test.com' });
// The fields are 
//  message -> User already exists in database
//  code -> ERR_EXISTING_USER
//  email -> test@test.com

Classes

SmartError

Functions

register(SmartError, code, message, payload, description)

Registers the error to the SmartError object. The code is accesible as the object's function with message and payload fields.

unregister(SmartError, code)

Removes the error from the SmartError object.

codes() ⇒ Array.<string>

Gets all registered codes as an array.

docs() ⇒ DocsObject

Gets the documentation of the registered error.

_call(code, SmartError)

Calls the registered function.

Typedefs

ErrorObject

DocsObject

SmartError

Kind: global class

• SmartError
  • new SmartError(message, code, payload)
  • instance
    • .clone() ⇒ SmartError
    • .toJSON(stack) ⇒ Object
    • ._getCode(code)
    • ._setPayload(payload)
    • ._parsePayload(err) ⇒ Object
  • static
    • .register(code, message, payload, description)
    • .unregister(code)

new SmartError(message, code, payload)

Creates new instance of SmartError.

Param	Type
message	string | SmartError | Error | ErrorObject
code	string
payload	Object

smartError.clone() ⇒ SmartError

Clones current instance and creates new one.

Kind: instance method of SmartError

smartError.toJSON(stack) ⇒ Object

Converts the instance to JSON object.

Kind: instance method of SmartError

Param	Type	Default	Description
stack	boolean	false	If true the stack is added in the JSON object.

smartError._getCode(code)

Gets the upper cased error with ERR_ prefix from the code. If the code already has the prefix, the code is not altered.

Kind: instance method of SmartError

Param	Type
code	string

smartError._setPayload(payload)

Sets the payload fields as instance fields. Message, code and stack are ignored.

Kind: instance method of SmartError

Param	Type
payload	Object

smartError._parsePayload(err) ⇒ Object

Parses the payload from the SmartError instance.

Kind: instance method of SmartError

Param	Type
err	SmartError

SmartError.register(code, message, payload, description)

Registers the error to the object. The code is accesible as the object's function with message and payload fields.

Kind: static method of SmartError

Param	Type
code	string
message	string
payload	object
description	string

SmartError.unregister(code)

Removes the error from th object.

Kind: static method of SmartError

Param	Type
code	string

register(SmartError, code, message, payload, description)

Registers the error to the SmartError object. The code is accesible as the object's function with message and payload fields.

Kind: global function

Param	Type	Default
SmartError	SmartError
code	string
message	string
payload	Object
description	string	null

unregister(SmartError, code)

Removes the error from the SmartError object.

Kind: global function

Param	Type
SmartError	SmartError
code	string

codes() ⇒ Array.<string>

Gets all registered codes as an array.

Kind: global function

docs() ⇒ DocsObject

Gets the documentation of the registered error.

Kind: global function

_call(code, SmartError)

Calls the registered function.

Kind: global function

Param	Type
code	string
SmartError	SmartError

ErrorObject

Kind: global typedef Properties

Name	Type
message	string
code	string
payload	Object

DocsObject

Kind: global typedef

Param	Type
code.description	string

Properties

Name	Type
code	object