export interface PersistentQueueOptions {
    baseDir?: string;
}
export default class PersistentQueue {
    private baseDir;
    constructor(opts?: PersistentQueueOptions);
    private ensureDir;
    private filenameForDate;
    /** Append a single JSON record as a newline in today's file */
    push(record: any): Promise<void>;
    /** List fallback files (by path) sorted oldest -> newest */
    listFiles(): Promise<string[]>;
    /** Read file and parse lines into objects */
    readFileLines(filePath: string): Promise<any[]>;
    /** Remove a file (after successful replay) */
    removeFile(filePath: string): Promise<void>;
}