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TailEvent

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:2521

Extends the lifetime of the install and activate events dispatched on the global scope as part of the service worker lifecycle. This ensures that any functional events (like FetchEvent) are not dispatched until it upgrades database schemas and deletes the outdated cache entries.

Extends

ExtendableEvent

Constructors

Constructor

new TailEvent(type, init?): TailEvent

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:668

Parameters

type

string

init?

Returns

TailEvent

Inherited from

ExtendableEvent.constructor

Properties

bubbles

readonly bubbles: boolean

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:692

Returns true or false depending on how event was initialized. True if event goes through its target’s ancestors in reverse tree order, and false otherwise.

Inherited from

ExtendableEvent.bubbles

cancelable

readonly cancelable: boolean

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:698

Returns true or false depending on how event was initialized. Its return value does not always carry meaning, but true can indicate that part of the operation during which event was dispatched, can be canceled by invoking the preventDefault() method.

Inherited from

ExtendableEvent.cancelable

cancelBubble

cancelBubble: boolean

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:746

Inherited from

ExtendableEvent.cancelBubble

composed

readonly composed: boolean

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:686

Returns true or false depending on how event was initialized. True if event invokes listeners past a ShadowRoot node that is the root of its target, and false otherwise.

Inherited from

ExtendableEvent.composed

currentTarget?

readonly optional currentTarget: EventTarget<Record<string, Event>>

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:716

Returns the object whose event listener’s callback is currently being invoked.

Inherited from

ExtendableEvent.currentTarget

defaultPrevented

readonly defaultPrevented: boolean

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:704

Returns true if preventDefault() was invoked successfully to indicate cancelation, and false otherwise.

Inherited from

ExtendableEvent.defaultPrevented

eventPhase

readonly eventPhase: number

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:680

Returns the event’s phase, which is one of NONE, CAPTURING_PHASE, AT_TARGET, and BUBBLING_PHASE.

Inherited from

ExtendableEvent.eventPhase

events

readonly events: TraceItem[]

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:2522

isTrusted

readonly isTrusted: boolean

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:740

Returns true if event was dispatched by the user agent, and false otherwise.

Inherited from

ExtendableEvent.isTrusted

returnValue

readonly returnValue: boolean

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:710

Inherited from

ExtendableEvent.returnValue

srcElement

readonly srcElement: null | EventTarget<Record<string, Event>>

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:728

Inherited from

ExtendableEvent.srcElement

target?

readonly optional target: EventTarget<Record<string, Event>>

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:722

Returns the object to which event is dispatched (its target).

Inherited from

ExtendableEvent.target

timeStamp

readonly timeStamp: number

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:734

Returns the event’s timestamp as the number of milliseconds measured relative to the time origin.

Inherited from

ExtendableEvent.timeStamp

traces

readonly traces: TraceItem[]

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:2523

type

readonly type: string

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:674

Returns the type of event, e.g. “click”, “hashchange”, or “submit”.

Inherited from

ExtendableEvent.type

AT_TARGET

readonly static AT_TARGET: number

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:773

Inherited from

ExtendableEvent.AT_TARGET

BUBBLING_PHASE

readonly static BUBBLING_PHASE: number

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:774

Inherited from

ExtendableEvent.BUBBLING_PHASE

CAPTURING_PHASE

readonly static CAPTURING_PHASE: number

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:772

Inherited from

ExtendableEvent.CAPTURING_PHASE

NONE

readonly static NONE: number

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:771

Inherited from

ExtendableEvent.NONE

Methods

composedPath()

composedPath(): EventTarget<Record<string, Event>>[]

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:770

Returns the invocation target objects of event’s path (objects on which listeners will be invoked), except for any nodes in shadow trees of which the shadow root’s mode is “closed” that are not reachable from event’s currentTarget.

Returns

EventTarget<Record<string, Event>>[]

Inherited from

ExtendableEvent.composedPath

preventDefault()

preventDefault(): void

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:758

If invoked when the cancelable attribute value is true, and while executing a listener for the event with passive set to false, signals to the operation that caused event to be dispatched that it needs to be canceled.

Returns

void

Inherited from

ExtendableEvent.preventDefault

stopImmediatePropagation()

stopImmediatePropagation(): void

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:752

Invoking this method prevents event from reaching any registered event listeners after the current one finishes running and, when dispatched in a tree, also prevents event from reaching any other objects.

Returns

void

Inherited from

ExtendableEvent.stopImmediatePropagation

stopPropagation()

stopPropagation(): void

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:764

When dispatched in a tree, invoking this method prevents event from reaching any objects other than the current object.

Returns

void

Inherited from

ExtendableEvent.stopPropagation

waitUntil()

waitUntil(promise): void

Defined in: node_modules/.pnpm/@cloudflare+workers-types@4.20250823.0/node_modules/@cloudflare/workers-types/index.ts:910

Parameters

promise

Promise<any>

Returns

void

Inherited from

ExtendableEvent.waitUntil