Code Lens are a bit of a hidden feature right now, as they are disabled by default. To enable them, add the following to your settings:

"haxe.enableCodeLens": true

Alternatively, you can use the Haxe: Toggle Code Lens command for this.

Once enabled, Code Lens tells you how often a particular field or type is referenced, similar to Find All References.

Code Lens are not just a fancier "Find All References" however. They also include the following information:

• subclasses of classes

  

• overrides of methods

  

• implementers of interfaces

  

• subinterfaces of interfaces