Merge pull request #1 from ithaka/conditionally-register-element

Register the focus-trap element only if it isn't already

Author: daneah

src/lib/focus-trap.ts

@@ -204,4 +204,4 @@ export class FocusTrap extends HTMLElement implements IFocusTrap {
 	}
 }
 
-window.customElements.define("focus-trap", FocusTrap);
+if (!window.customElements.get('focus-trap')) customElements.define('focus-trap', FocusTrap);