Interface StatefulPromise<Return>

Readonly[toStringTag]

catch

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

  Attaches a callback for only the rejection of the Promise.

  Type Parameters

  • TResult = never

  Parameters

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

    The callback to execute when the Promise is rejected.

  Returns Promise<Return | TResult>

  A Promise for the completion of the callback.

finally

• finally(onfinally?: (() => void) | null): Promise<Return>

  Attaches a callback that is invoked when the Promise is settled (fulfilled or rejected). The resolved value cannot be modified from the callback.

  Parameters

  • Optionalonfinally: (() => void) | null

    The callback to execute when the Promise is settled (fulfilled or rejected).

  Returns Promise<Return>

  A Promise for the completion of the callback.

then

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

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

  Type Parameters

  • TResult1 = Return
  • TResult2 = never

  Parameters

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

    The callback to execute when the Promise is resolved.

  • Optionalonrejected: ((reason: any) => TResult2 | PromiseLike<TResult2>) | null

    The callback to execute when the Promise is rejected.

  Returns Promise<TResult1 | TResult2>

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