Interface Promise<T>

Type Parameters

  • T

Hierarchy

  • Promise

Properties

Methods

Properties

[toStringTag]: string

Methods

  • Attaches a callback for only the rejection of the Promise.

    Type Parameters

    • TResult = never

    Parameters

    • Optional onrejected: ((reason) => TResult | PromiseLike<TResult>)

      The callback to execute when the Promise is rejected.

    Returns Promise<T | TResult>

    A Promise for the completion of the callback.

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

    Parameters

    • Optional onfinally: (() => void)

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

        • (): void
        • Returns void

    Returns Promise<T>

    A Promise for the completion of the callback.

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

    Type Parameters

    • TResult1 = T

    • TResult2 = never

    Parameters

    • Optional onfulfilled: ((value) => TResult1 | PromiseLike<TResult1>)

      The callback to execute when the Promise is resolved.

    • Optional onrejected: ((reason) => 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.