title: ModuleType
tags: docs concepts

The `module-type` field of a [[JavaScript module|Modules]] is a string that identifies the type of the module. TiddlyWiki5 uses the following types:

* `command` - individual commands for the `$tw.Commander` class 
* `config` - values to be merged over the `$tw.config` global
* `editor` - interactive editors for different types of content
* `global` - members of the `$tw` global
* `library` - external global JavaScript library, such as Esprima or jQuery
* `macro` - macro definitions
* `module` - generic type for modules `require`d by other modules
* `parser` - parsers for different types of content
* `saver` - functions for saving TiddlyWiki content on different platforms
* `startup` - functions to be called by the kernel after booting
* `storyview` - visualisations for the `story` macro
* `tiddlerdeserializer` - methods to extract tiddlers from text representations or the DOM
* `tiddlerfield` - defines the characteristics of tiddler fields of a particular name
* `tiddlermethod` - additional methods for the `$tw.Tiddler` class
* `tiddlerserializer` - methods to serialise tiddlers to text representations
* `treenode` - classes of parser tree nodes
* `treeutils` - static utility methods for parser tree nodes 
* `utils` - general purpose utility functions residing in `$tw.utils`
* `wikimethod` - additional methods for the `$tw.Wiki` class
* `wikitextrule` - individual rules for the wikitext parser