Class Deferred<T>

constructor

• new Deferred<T>(): Deferred<T>

  Type Parameters

  • T

  Returns Deferred<T>

Readonly[toStringTag]

Readonlypromise

fulfilled

• get fulfilled(): boolean

  Returns boolean

  true iff resolve has been invoked

pending

• get pending(): boolean

  Returns boolean

  true iff neither resolve nor rejected have been invoked

rejected

• get rejected(): boolean

  Returns boolean

  true iff rejected has been invoked

settled

• get settled(): boolean

  Returns boolean

  true iff resolve or rejected have been invoked

catch

• catch<TResult = never>(
      onrejected?:
          | null
          | ((reason: unknown) => TResult | PromiseLike<TResult>),
  ): Promise<T | TResult>

  Type Parameters

  • TResult = never

  Parameters

  • Optionalonrejected: null | ((reason: unknown) => TResult | PromiseLike<TResult>)

  Returns Promise<T | TResult>

observe

• observe(p: Promise<T>): this

  Parameters

  • p: Promise<T>

  Returns this

observeQuietly

• observeQuietly(p: Promise<T>): Deferred<undefined | T>

  Parameters

  • p: Promise<T>

  Returns Deferred<undefined | T>

reject

• reject(reason?: string | Error): boolean

  Parameters

  • Optionalreason: string | Error

  Returns boolean

resolve

• resolve(value: T): boolean

  Parameters

  • value: T

  Returns boolean

then

• then<TResult1 = T, TResult2 = never>(
      onfulfilled?: null | ((value: T) => TResult1 | PromiseLike<TResult1>),
      onrejected?: null | ((reason: unknown) => TResult2 | PromiseLike<TResult2>),
  ): Promise<TResult1 | TResult2>

  Attaches callbacks for the resolution and/or rejection of the Promise.

  Type Parameters

  • TResult1 = T
  • TResult2 = never

  Parameters

  • Optionalonfulfilled: null | ((value: T) => TResult1 | PromiseLike<TResult1>)

    The callback to execute when the Promise is resolved.
  • Optionalonrejected: null | ((reason: unknown) => TResult2 | PromiseLike<TResult2>)

    The callback to execute when the Promise is rejected.

  Returns Promise<TResult1 | TResult2>

  A Promise for the completion of which ever callback is executed.