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    Class Deferred<T>

    A Deferred object is a Promise with public methods to resolve and reject.

    Example:

     const deferred = new Deferred<number>()
     setTimeout(() => {
         deferred.resolve(42)
     }, 1000)

     deferred.then(value => console.log('Resolved to:', value))

    Type Parameters

    • T

    Implements

    • Promise<T>
    Index
    constructor
    reject resolve
    [toStringTag]
    catch finally then
    reject: (reason?: any) => void
    resolve: (value: T | PromiseLike<T>) => void

    • 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<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

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

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

      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

      • Optionalonfulfilled: ((value: T) => 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.

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