Interface Promise<T>
interface Promise<T> {
"[toStringTag]": string;
catch<TResult = never>(
onrejected?: (reason: any) => TResult | PromiseLike<TResult>,
): Promise<T | TResult>;
finally(onfinally?: () => void): Promise<T>;
then<TResult1 = T, TResult2 = never>(
onfulfilled?: (value: T) => TResult1 | PromiseLike<TResult1>,
onrejected?: (reason: any) => TResult2 | PromiseLike<TResult2>,
): Promise<TResult1 | TResult2>;
}
"[toStringTag]": string;
catch<TResult = never>(
onrejected?: (reason: any) => TResult | PromiseLike<TResult>,
): Promise<T | TResult>;
finally(onfinally?: () => void): Promise<T>;
then<TResult1 = T, TResult2 = never>(
onfulfilled?: (value: T) => TResult1 | PromiseLike<TResult1>,
onrejected?: (reason: any) => TResult2 | PromiseLike<TResult2>,
): Promise<TResult1 | TResult2>;
}
Type Parameters
Index
Properties
Methods
Methods
catch
- catch<TResult = never>(
onrejected?: (reason: any) => TResult | PromiseLike<TResult>,
): Promise<T | TResult> Type Parameters
Parameters
Optionalonrejected: (reason: any) => 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?: () => void): 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
Optionalonfinally: () => voidThe 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 = T, TResult2 = never>(
onfulfilled?: (value: T) => TResult1 | PromiseLike<TResult1>,
onrejected?: (reason: any) => TResult2 | PromiseLike<TResult2>,
): Promise<TResult1 | TResult2> Attaches callbacks for the resolution and/or rejection of the Promise.
Type Parameters
- TResult1 = T
- TResult2 = never
Parameters
Optionalonfulfilled: (value: T) => TResult1 | PromiseLike<TResult1>The callback to execute when the Promise is resolved.
Optionalonrejected: (reason: any) => 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.
Attaches a callback for only the rejection of the Promise.