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shirakaba
2022-12-21 11:11:25 +09:00
parent 1f3a62c3fb
commit b4f69987ae
1 changed files with 4 additions and 0 deletions
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packages/core/data/dom-events/dom-event.ts
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@@ -393,6 +393,10 @@ export class DOMEvent implements Event {
// nanoseconds per dispatchTo() call. // nanoseconds per dispatchTo() call.
private handleEvent(data: EventData, isGlobal: boolean, phase: 0 | 1 | 2 | 3, removeEventListener: (eventName: string, callback?: any, thisArg?: any, capture?: boolean) => void, removeEventListenerContext: unknown) { private handleEvent(data: EventData, isGlobal: boolean, phase: 0 | 1 | 2 | 3, removeEventListener: (eventName: string, callback?: any, thisArg?: any, capture?: boolean) => void, removeEventListenerContext: unknown) {
// Set a listener to clone the array just before any mutations. // Set a listener to clone the array just before any mutations.
//
// Lazy-binding this (binding it just before being called, rather than
// up-front) unexpectedly seems to slow things down - v8 may be
// optimising it for us or something.
this.listenersLive.onMutation = this.onCurrentListenersMutation.bind(this); this.listenersLive.onMutation = this.onCurrentListenersMutation.bind(this);
for (let i = this.listenersLazyCopy.length - 1; i >= 0; i--) { for (let i = this.listenersLazyCopy.length - 1; i >= 0; i--) {