import type { ClientState } from './project-server-types.js';
export declare const DEFAULT_EXTERNAL_DEBOUNCE_MS = 400;
export declare const DEFAULT_EXTERNAL_COALESCE_WINDOW_MS = 50;
export declare function isIgnoredRelativePath(relativePath: string): boolean;
/**
 * Whether a non-indexable `rename` path may be a directory whose files the
 * index holds: an existing directory, or a vanished path without an
 * extension (a deleted `.png` must not trigger an index write run).
 */
export declare function isDirectoryWatchCandidate(absolute: string): Promise<boolean>;
export interface ProjectServerWatcherOptions {
    projectRoot: string;
    onFilesChanged: (files: string[]) => void;
}
export declare class ProjectServerWatcherManager {
    private readonly options;
    private externalWatcher;
    private externalDebounceMs;
    private externalCoalesceWindowMs;
    private readonly externalDebounceTimers;
    private readonly externalReadyFiles;
    private externalReadyFlush;
    constructor(options: ProjectServerWatcherOptions);
    get isWatching(): boolean;
    get pendingFileCount(): number;
    private enqueueExternalFile;
    private ensureExternalWatcher;
    stop(): void;
    reconcile(clients: Iterable<ClientState>): void;
}
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