Method clearState

src/utils/DOMReconciler.ts:312–318

* Clear saved state

(key?: string)

	 * Clear saved state
	 */
	clearState(key?: string): void {
		if (key) {
			this.stateMap.delete(key);
		} else {
			this.stateMap.clear();
		}
	}

	/**
	 * Clean up all resources