import type { WatchlistFile, WatchlistSnapshotRow, EntityType } from './types.js';
export interface WatchlistDiff {
    added: WatchlistSnapshotRow[];
    removed: WatchlistSnapshotRow[];
    current: WatchlistSnapshotRow[];
}
export declare class WatchlistManager {
    private readonly filePath;
    private watcher;
    private debounceTimer;
    private _onChange;
    constructor(filePath: string);
    /** Load the watchlist file. Creates empty template if missing. */
    load(): WatchlistFile;
    /** Save the watchlist to disk. */
    save(watchlist: WatchlistFile): void;
    /** Convert watchlist file to snapshot rows. */
    toSnapshotRows(watchlist: WatchlistFile): WatchlistSnapshotRow[];
    /** Diff new snapshot against stored snapshot. */
    diff(stored: WatchlistSnapshotRow[], current: WatchlistSnapshotRow[]): WatchlistDiff;
    /** Start watching the file for changes with 500ms debounce. */
    watch(storedSnapshot: WatchlistSnapshotRow[], onChange: (diff: WatchlistDiff) => void): void;
    /** Stop watching. */
    stopWatching(): void;
    /** Add entries to the watchlist file. Returns the new entries as snapshot rows. */
    addEntries(entries: Array<{
        type: EntityType;
        id: string;
        label: string;
        backfill?: boolean;
    }>): WatchlistSnapshotRow[];
    /** Remove entries from the watchlist file. Returns the removed entries. */
    removeEntries(entries: Array<{
        type: EntityType;
        id: string;
    }>): Array<{
        type: EntityType;
        id: string;
    }>;
}
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