/**
 * Little-endian bit reader with bounds-safe cursor.
 * Reads bits LSB-first within bytes, bytes in forward order.
 */
export declare class BitReader {
    private data;
    private byteOffset;
    private bitOffset;
    constructor(data: Uint8Array, byteOffset?: number);
    /** Current byte position (after last fully consumed byte) */
    get position(): number;
    /** Total bits consumed */
    get bitsConsumed(): number;
    /** True if no more bits available */
    get atEnd(): boolean;
    /** Ensure at least n bits are available. Throws if not. */
    ensure(n: number): void;
    /** Read n bits (1-32), LSB first */
    readBits(n: number): number;
    /** Align to next byte boundary (skip remaining bits in current byte) */
    align(): void;
    /** Read a full byte (convenience, must be aligned or will read across boundary) */
    readByte(): number;
    /** Slice remaining bytes from current position (after aligning) */
    readRemainingBytes(): Uint8Array;
}