add adoptefStyleSheets to the options

Author: rhildred

src/index.js

@@ -47,6 +47,9 @@ export default function register(Component, tagName, propNames, options) {
 			options && options.shadow
 				? inst.attachShadow({ mode: options.mode || 'open' })
 				: inst;
+		if(options && options.adoptedStyleSheets && inst._root.adoptedStyleSheets){
+			inst._root.adoptedStyleSheets = options.adoptedStyleSheets;
+		}
 		return inst;
 	}
 	PreactElement.prototype = Object.create(HTMLElement.prototype);