Calls func(...args), but annotating any failure error with label.
If label is omitted or undefined, then this is equivalent to
`func(...args).
Otherwise, if it successfully returns a non-promise, that non-promise is
returned.
If it throws, rethrow a similar error whose message is
`${label}: ${originalMessage}`
That way, in an error happens deep within a stack of calls to
applyLabelingError, the resulting error will show the stack of labels.
If it returns a promise, then applyLabelingError cannot tell until that
promise settles whether it represents a success or failure. So it immediately
returns a new promise. If the original promise fulfills, then the
fulfillment is propagated to the returned promise.
If the promise rejects with an error, then the returned promise is
rejected with a similar promise, prefixed with the label in that same way.
Calls
func(...args), but annotating any failure error withlabel.If
labelis omitted orundefined, then this is equivalent to `func(...args).Otherwise, if it successfully returns a non-promise, that non-promise is returned.
If it throws, rethrow a similar error whose message is
That way, in an error happens deep within a stack of calls to
applyLabelingError, the resulting error will show the stack of labels.If it returns a promise, then
applyLabelingErrorcannot tell until that promise settles whether it represents a success or failure. So it immediately returns a new promise. If the original promise fulfills, then the fulfillment is propagated to the returned promise.If the promise rejects with an error, then the returned promise is rejected with a similar promise, prefixed with the label in that same way.