diff --git a/src/runtime/internal/dom.ts b/src/runtime/internal/dom.ts
index 9745e4a508..9ab9a4395f 100644
--- a/src/runtime/internal/dom.ts
+++ b/src/runtime/internal/dom.ts
@@ -273,9 +273,6 @@ export function toggle_class(element, name, toggle) {
 }
 
 export function custom_event<T=any>(type: string, detail?: T) {
-        // is compile target customElement?
-        // is event not a Svelte event?
-        // use new CustomEvent with bubbles/composed = true for non, svelte event
 	const e: CustomEvent<T> = document.createEvent('CustomEvent');
 	e.initCustomEvent(type, false, false, detail);
 	return e;
@@ -319,4 +316,4 @@ export class HtmlTag {
 	d() {
 		this.n.forEach(detach);
 	}
-}
+}
\ No newline at end of file
diff --git a/src/runtime/internal/lifecycle.ts b/src/runtime/internal/lifecycle.ts
index 809a39d717..a8e37e9632 100644
--- a/src/runtime/internal/lifecycle.ts
+++ b/src/runtime/internal/lifecycle.ts
@@ -28,8 +28,6 @@ export function onDestroy(fn) {
 }
 
 export function createEventDispatcher() {
-        // is compile target customElement?
-        // always dispatch!
 	const component = get_current_component();
 
 	return (type: string, detail?: any) => {
@@ -63,4 +61,4 @@ export function bubble(component, event) {
 	if (callbacks) {
 		callbacks.slice().forEach(fn => fn(event));
 	}
-}
+}
\ No newline at end of file