Pen(ペン)

Pen.stamp ( スタンプします )

import { Typescratcher as Ts } from "@tscratch3/typescratcher";
import type { Sprite } from "@tscratch3/typescratcher";

const cat = new Ts.Sprite( 'cat' );

const thread = function( this : Sprite ) {
    this.Pen.stamp();
}