Text Formatter
The built-in text formatter can adjust whitespace between code elements to make code more readable.
The Text Formatting topic talks about text formatters in general and how to register them as a "feature" language service.
The JavaScriptTextFormatter class is the default implementation of an ITextFormatter service for this language.
Registering with a Syntax Language
Any object that implements ITextFormatter can be associated with a syntax language by registering it as an ITextFormatter service on the language.
The JavaScriptSyntaxLanguage class automatically registers a JavaScriptTextFormatter with itself when it is created, so normally text formatters never need to be set on a JavaScript language unless a custom one is made.
This code creates a custom text formatter (defined in a make-believe CustomJavaScriptTextFormatter class) and registers it with the syntax language that is already declared in the language variable:
language.RegisterTextFormatter(new CustomJavaScriptTextFormatter());
Note
The SyntaxLanguageExtensions.RegisterTextFormatter method in the code snippet above is a helper extension method that gets added to ISyntaxLanguage objects when the ActiproSoftware.Text namespace is imported. See the Service Locator Architecture topic for details on registering and retrieving various service object instances, both via extension methods and generically, as there are some additional requirements for using the extension methods.
Disabling the Functionality
Since this feature is installed as a "feature" service on the language and is installed on JavaScriptSyntaxLanguage by default, it can be disabled by uninstalling the service from the language.
Opening Curly Braces on New Line
The JavaScriptTextFormatter.IsOpeningBraceOnNewLine property can be used to determine whether opening curly braces appear on a new line.
It defaults to false but can be changed to true to cause opening curly braces to move to the next line.