// Type definitions for ui/Placeholder

type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>;
type Merge<M, N> = Omit<M, Extract<keyof M, keyof N>> & N;

export interface PlaceholderDecoratorConfig extends Object {
  /**
   * Configures the style of the placeholder element
   */
  style?: object;
  /**
   * The component to use as a placeholder.
   */
  placeholderComponent?: string;
}
export interface PlaceholderDecoratorProps {}
export function PlaceholderDecorator<P>(
  config: PlaceholderDecoratorConfig,
  Component: React.ComponentType<P> | string,
): React.ComponentType<P & PlaceholderDecoratorProps>;

export function PlaceholderDecorator<P>(
  Component: React.ComponentType<P> | string,
): React.ComponentType<P & PlaceholderDecoratorProps>;

export interface PlaceholderControllerDecoratorConfig extends Object {
  /**
 * The bounds of the container represented by an object with  `height`  and  `width`  members.
 * 
 * If the container is a static size, this can be specified at design-time to avoid calculating
the bounds at run-time (the default behavior).
 */
  bounds?: object;
  /**
 * Event callback which indicates that the viewport has scrolled and placeholders should be
notified.
 */
  notify?: string;
  /**
 * Multiplier used with the wrapped component's height and width to determine the threshold for
replacing the placeholder component with the true component.
 */
  thresholdFactor?: number;
}
export interface PlaceholderControllerDecoratorProps {}
export function PlaceholderControllerDecorator<P>(
  config: PlaceholderControllerDecoratorConfig,
  Component: React.ComponentType<P> | string,
): React.ComponentType<P & PlaceholderControllerDecoratorProps>;

export function PlaceholderControllerDecorator<P>(
  Component: React.ComponentType<P> | string,
): React.ComponentType<P & PlaceholderControllerDecoratorProps>;