import { ReactNode } from 'react';
interface RefShim<T> {
  current: T | null;
}
interface AlertFlashContentContext {
  instanceId: string;
  type: string;
  headerRef: RefShim<HTMLElement>;
  contentRef: RefShim<HTMLElement>;
}
interface AlertFlashContentInitialContext {
  instanceId: string;
  type: string;
  header?: ReactNode;
  content?: ReactNode;
}
export type ReplacementType = 'original' | 'remove' | 'replaced';
interface ReplacementApi {
  hideHeader(): void;
  restoreHeader(): void;
  replaceHeader(replacer: (container: HTMLElement) => void): void;
  hideContent(): void;
  restoreContent(): void;
  replaceContent(replacer: (container: HTMLElement) => void): void;
}
export interface AlertFlashContentResult {
  update: () => void;
  unmount: (containers: {
    replacementHeaderContainer: HTMLElement;
    replacementContentContainer: HTMLElement;
  }) => void;
}
export interface AlertFlashContentConfig {
  id: string;
  runReplacer: (context: AlertFlashContentContext, replacementApi: ReplacementApi) => AlertFlashContentResult;
  initialCheck?: (context: AlertFlashContentInitialContext) => boolean;
}
type AlertFlashContentRegistrationListener = (provider: AlertFlashContentConfig) => () => void;
export interface AlertFlashContentApiPublic {
  registerContentReplacer(config: AlertFlashContentConfig): void;
  clearRegisteredReplacerForTesting(): void;
}
export interface AlertFlashContentApiInternal {
  onContentRegistered(listener: AlertFlashContentRegistrationListener): () => void;
  initialCheck(context: AlertFlashContentInitialContext): boolean;
}
export declare class AlertFlashContentController {
  #private;
  registerContentReplacer: (content: AlertFlashContentConfig) => void;
  clearRegisteredReplacerForTesting: () => void;
  initialCheck: (context: AlertFlashContentInitialContext) => boolean;
  onContentRegistered: (listener: AlertFlashContentRegistrationListener) => () => void;
  installPublic(api?: Partial<AlertFlashContentApiPublic>): AlertFlashContentApiPublic;
  installInternal(internalApi?: Partial<AlertFlashContentApiInternal>): AlertFlashContentApiInternal;
}
export {};