declare let visibilityChange: Function; export { visibilityChange }; /** * Provides a mechanism to group DOM reads to minimize layout thrashing. * * @param readTask The function to call as part of the reads batch. */ export declare function readDOM(readTask: () => void): void; /** * Provides a mechanism to group DOM mutations to minimize layout thrashing. * * @param mutationTask The function to call as part of the mutations batch. */ export declare function mutateDOM(mutationTask: () => void): void;