Check whether the touch identifier on the event matches the current saved identifier. If there is no identifier, that means it's a mouse event and we'll use the identifier "mouse". This means we won't deal well with multiple mice being used at the same time. That seems okay. If the current identifier was unset, save the identifier from the event. This starts a drag/gesture, during which touch events with other identifiers will be silently ignored.
export declare function checkTouchIdentifier(e: Event | PseudoEvent): boolean;
|e||Event | PseudoEvent||Mouse event or touch event.|
Whether the identifier on the event matches the current saved identifier.