Interface Promise<T>

Represents the completion of an asynchronous operation

Type Parameters

T

Hierarchy

Promise

Index

Properties

[toStringTag]

Methods

Properties

Readonly [toStringTag]

[toStringTag]: string

Methods

catch

catch<TResult>(onrejected?: null | ((reason: any) => TResult | PromiseLike<TResult>)): internal.Promise<T | TResult>

- Defined in node_modules/typescript/lib/lib.es5.d.ts:1540
Attaches a callback for only the rejection of the Promise.

Type Parameters
- TResult = never
Parameters
- Optional onrejected: null | ((reason: any) => TResult | PromiseLike<TResult>)
  
  The callback to execute when the Promise is rejected.
Returns internal.Promise<T | TResult>
A Promise for the completion of the callback.

finally

finally(onfinally?: null | (() => void)): internal.Promise<T>

- Defined in node_modules/typescript/lib/lib.es2018.promise.d.ts:31
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 internal.Promise<T>
A Promise for the completion of the callback.

then

then<TResult1, TResult2>(onfulfilled?: null | ((value: T) => TResult1 | PromiseLike<TResult1>), onrejected?: null | ((reason: any) => TResult2 | PromiseLike<TResult2>)): internal.Promise<TResult1 | TResult2>

- Defined in node_modules/typescript/lib/lib.es5.d.ts:1533
Attaches callbacks for the resolution and/or rejection of the Promise.

Type Parameters
- TResult1 = T
- TResult2 = never
Parameters
- Optional onfulfilled: null | ((value: T) => TResult1 | PromiseLike<TResult1>)
  
  The callback to execute when the Promise is resolved.
- Optional onrejected: null | ((reason: any) => TResult2 | PromiseLike<TResult2>)
  
  The callback to execute when the Promise is rejected.
Returns internal.Promise<TResult1 | TResult2>
A Promise for the completion of which ever callback is executed.

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