Class AsyncItem<T>

constructor

• new AsyncItem<T>(executor): AsyncItem<T>

• Creates a new Promise.

  Type Parameters

  • T

  Parameters

  • executor: ((resolve, reject) => void)

    A callback used to initialize the promise. This callback is passed two arguments: a resolve callback used to resolve the promise with a value or the result of another promise, and a reject callback used to reject the promise with a provided reason or error.

    • • (resolve, reject): void

      • Parameters

        • resolve: ((value) => void)

          • • (value): void

            • Parameters

              • value: T | PromiseLike<T>

              Returns void

        • reject: ((reason?) => void)

          • • (reason?): void

            • Parameters

              • Optional reason: any

              Returns void

        Returns void

  Returns AsyncItem<T>

Readonly [toStringTag]

Static Readonly [species]

catch

• catch<TResult>(onrejected?): Promise<T | TResult>

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

  Type Parameters

  • TResult = never

  Parameters

  • Optional onrejected: null | ((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.

finally

• finally(onfinally?): Promise<T>

• 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: null | (() => void)

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

  Returns Promise<T>

  A Promise for the completion of the callback.

then

• then<TResult1, TResult2>(onfulfilled?, onrejected?): Promise<TResult1 | TResult2>

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

  Type Parameters

  • TResult1 = T

  • TResult2 = never

  Parameters

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

    The callback to execute when the Promise is resolved.

  • Optional onrejected: null | ((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.

Static all

• all<T>(values): Promise<Awaited<T>[]>

• Creates a Promise that is resolved with an array of results when all of the provided Promises resolve, or rejected when any Promise is rejected.

  Type Parameters

  • T

  Parameters

  • values: Iterable<T | PromiseLike<T>>

    An iterable of Promises.

  Returns Promise<Awaited<T>[]>

  A new Promise.
• all<T>(values): Promise<{
      -readonly [P in string | number | symbol]: Awaited<T[P]>
  }>

• Creates a Promise that is resolved with an array of results when all of the provided Promises resolve, or rejected when any Promise is rejected.

  Type Parameters

  • T extends [] | readonly unknown[]

  Parameters

  • values: T

    An array of Promises.

  Returns Promise<{
      -readonly [P in string | number | symbol]: Awaited<T[P]>
  }>

  A new Promise.

Static allSettled

• allSettled<T>(values): Promise<{
      -readonly [P in string | number | symbol]: PromiseSettledResult<Awaited<T[P]>>
  }>

• Creates a Promise that is resolved with an array of results when all of the provided Promises resolve or reject.

  Type Parameters

  • T extends [] | readonly unknown[]

  Parameters

  • values: T

    An array of Promises.

  Returns Promise<{
      -readonly [P in string | number | symbol]: PromiseSettledResult<Awaited<T[P]>>
  }>

  A new Promise.
• allSettled<T>(values): Promise<PromiseSettledResult<Awaited<T>>[]>

• Creates a Promise that is resolved with an array of results when all of the provided Promises resolve or reject.

  Type Parameters

  • T

  Parameters

  • values: Iterable<T | PromiseLike<T>>

    An array of Promises.

  Returns Promise<PromiseSettledResult<Awaited<T>>[]>

  A new Promise.

Static race

• race<T>(values): Promise<Awaited<T>>

• Creates a Promise that is resolved or rejected when any of the provided Promises are resolved or rejected.

  Type Parameters

  • T

  Parameters

  • values: Iterable<T | PromiseLike<T>>

    An iterable of Promises.

  Returns Promise<Awaited<T>>

  A new Promise.
• race<T>(values): Promise<Awaited<T[number]>>

• Creates a Promise that is resolved or rejected when any of the provided Promises are resolved or rejected.

  Type Parameters

  • T extends [] | readonly unknown[]

  Parameters

  • values: T

    An array of Promises.

  Returns Promise<Awaited<T[number]>>

  A new Promise.

Static reject

• reject<T>(reason?): Promise<T>

• Creates a new rejected promise for the provided reason.

  Type Parameters

  • T = never

  Parameters

  • Optional reason: any

    The reason the promise was rejected.

  Returns Promise<T>

  A new rejected Promise.

Static resolve

• resolve(): Promise<void>

• Creates a new resolved promise.

  Returns Promise<void>

  A resolved promise.
• resolve<T>(value): Promise<Awaited<T>>

• Creates a new resolved promise for the provided value.

  Type Parameters

  • T

  Parameters

  • value: T

    A promise.

  Returns Promise<Awaited<T>>

  A promise whose internal state matches the provided promise.
• resolve<T>(value): Promise<Awaited<T>>

• Creates a new resolved promise for the provided value.

  Type Parameters

  • T

  Parameters

  • value: T | PromiseLike<T>

    A promise.

  Returns Promise<Awaited<T>>

  A promise whose internal state matches the provided promise.