[jsfl] how to get shape data

Hi. I make JS library for export all elements from fla file library (FlashLib), and than build elements using PIXI.js.
But i have pdoblem with understanding how to get data for shape objects.
I have arrays on vertexes, edjes and conturs. But can't understand how to get data what i can expord as JSON.
I can export simple shapes (like rectandles). But i dont understand mechanics how to get data for another shapes. Like drawed by brush or shapes with holes or another shapes.
Maybe somewere exist documentation about this.
And what is HalfEdge obgect? 🙂