/**
 * Zstandard frame header parser.
 * Parses magic, frame descriptor, window descriptor, content size.
 */
export declare const ZSTD_MAGIC = 4247762216;
export declare const ZSTD_FRAMEHEADER_SIZE_MIN = 2;
export declare const ZSTD_FRAMEHEADER_SIZE_MAX = 14;
export interface FrameHeader {
    /** Total header size in bytes */
    headerSize: number;
    /** Window size (minimum buffer for decompression) */
    windowSize: number;
    /** Decompressed content size, or null if unknown */
    contentSize: number | null;
    /** Whether content checksum is present at end of frame */
    hasContentChecksum: boolean;
    /** Dictionary ID if present, else null */
    dictionaryId: number | null;
    /** Single segment mode (no window descriptor) */
    singleSegment: boolean;
}
export declare function parseFrameHeader(data: Uint8Array, offset: number): FrameHeader;
export declare function parseZstdFrame(data: Uint8Array, offset: number): {
    magic: number;
    header: FrameHeader;
};