Unable to change BitDepth of a Document

[Karmalakas]

You need to use constants
Check this topic and the solution

How do I use Constants in uxp?

As stated in the title。 require('photoshop').app.activeDocument.layers.forEach((layer) => { console.log(layer) if (layer.kind === LayerKind.TEXT) { console.log('文本图层') } }) But an error is reported Uncaught ReferenceError: LayerKind is not defined What did I miss? Thank you~