import { DyNTS_SingletonService } from '../../_services/base/singleton.service';
/**
 * In-memory ring buffer a szerver console kimenethez.
 * Interceptalja a console.log/error/warn/info hivasokat es eltarolja az utolso N sort.
 *
 * Hasznalat:
 *   DyNTS_LogBuffer_Service.getInstance().install();  // app startup-nal
 *   DyNTS_LogBuffer_Service.getInstance().getLines(100);  // utolso 100 sor
 */
export declare class DyNTS_LogBuffer_Service extends DyNTS_SingletonService {
    static getInstance(): DyNTS_LogBuffer_Service;
    private readonly maxLines;
    private readonly buffer;
    private installed;
    /**
     * Interceptalja a console.log/error/warn/info kimeneteket es a bufferbe irja.
     * Egyszer kell hivni, a szerver indulasakor (lehetoleg a legelso muvelet).
     */
    install(): void;
    /**
     * A log buffer be van-e kapcsolva (install megtortent-e).
     */
    isInstalled(): boolean;
    /**
     * Az utolso N sor lekerdezese.
     */
    getLines(count?: number): string[];
    /**
     * Az osszes buffered sor szama.
     */
    getLineCount(): number;
    /**
     * Buffer uritese.
     */
    clear(): void;
    private addLine;
}
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