Function off

src/index.ts:82–91

* Remove an event handler for the given type. * If `handler` is omitted, all handlers of the given type are removed. * @param {string|symbol} type Type of event to unregister `handler` from (`'*'` to remove a wildcard handler) * @param {Function} [handler] Handler function to remove * @m

(type: Key, handler?: GenericEventHandler)

		 * @memberOf mitt
		 */
		off<Key extends keyof Events>(type: Key, handler?: GenericEventHandler) {
			const handlers: Array<GenericEventHandler> | undefined = all!.get(type);
			if (handlers) {
				if (handler) {
					handlers.splice(handlers.indexOf(handler) >>> 0, 1);
				} else {
					all!.set(type, []);
				}
			}
		},

		/**
		 * Invoke all handlers for the given type.