Class: Transformer

Monster .Data. Transformer

The transformer class is a swiss army knife for manipulating values. especially in combination with the pipe, processing chains can be built up.

A simple example is the conversion of all characters to lowercase. for this purpose the command tolower must be used.

let t = new Transformer('tolower').run('ABC'); // ↦ abc

Constructor

new Transformer(definition)

Parameters:

Name	Type	Description
`definition`	string

Since: 1.5.0
Copyright: schukai GmbH
License: AGPLv3
See: Monster Docs

Example

import {Transformer} from '@schukai/monster/source/data/transformer.mjs';

const transformer = new Transformer("tolower")

console.log(transformer.run("HELLO"))
// ↦ hello

console.log(transformer.run("WORLD"))
// ↦ world

Methods

run(value) → {*}

Parameters:

Name	Type	Description
`value`	*

Throws:

unknown command
Type
Error
unsupported type
Type
TypeError
type not supported
Type
Error

Returns:

Type:: *

setCallback(name, callback, context) → {Transformer}

Parameters:

Name	Type	Description
`name`	string
`callback`	function
`context`	object

Throws:

value is not a string
Type
TypeError
value is not a function
Type
TypeError

Returns:

Type:: Transformer