finally
Interfaces
Promise
Represents the completion of an asynchronous operation
Type Parameters
| Type Parameter |
|---|
T |
Properties
[toStringTag]
readonly [toStringTag]: string;
Methods
catch()
catch<TResult>(onrejected?): Promise<T | TResult>;
Attaches a callback for only the rejection of the Promise.
Type Parameters
| Type Parameter | Default type |
|---|---|
TResult | never |
Parameters
| Parameter | Type | Description |
|---|---|---|
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.
finally()
Call Signature
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
| Parameter | Type | Description |
|---|---|---|
onfinally? | () => void | The callback to execute when the Promise is settled (fulfilled or rejected). |
Returns
Promise<T>
A Promise for the completion of the callback.
Call Signature
finally(always): any;
Parameters
| Parameter | Type |
|---|---|
always | (value?) => any |
Returns
any
then()
then<TResult1, TResult2>(onfulfilled?, onrejected?): Promise<TResult1 | TResult2>;
Attaches callbacks for the resolution and/or rejection of the Promise.
Type Parameters
| Type Parameter | Default type |
|---|---|
TResult1 | T |
TResult2 | never |
Parameters
| Parameter | Type | Description |
|---|---|---|
onfulfilled? | (value) => TResult1 | PromiseLike<TResult1> | The callback to execute when the Promise is resolved. |
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.
Variables
Promise
Promise: PromiseConstructor;