Function once

Returns an event promise that resolves when the specified event is emitted

Returns an event promise that resolves when the specified event is emitted. This overload is untyped and can be used to listen for any event that is emitted.

Executes a callback once when the specified event is emitted

Executes a callback once when the specified event is emitted. This overload is untyped and can be used to listen for any event that is emitted.

Returns an event promise that resolves when any events matching the regex are emitted

Executes a callback once when any events matching the regex are emitted