/** @format */
/**
 * Bit writer that packs bits LSB-first into bytes.
 *
 * This class allows writing individual bits or groups of bits into a byte array,
 * packing them in a least-significant-bit-first order. Useful for encoding
 * bitstreams in formats such as WebP.
 */
export declare class WebPBitWriter {
    private readonly _bytes;
    private _currentByte;
    private _usedBits;
    /**
     * Writes a value as a sequence of bits to the bitstream.
     * Bits are written LSB-first.
     * @param {number} value - The value to write.
     * @param {number} numBits - The number of bits to write from the value.
     */
    writeBits(value: number, numBits: number): void;
    /**
     * Flushes any remaining bits in the current byte to the byte array.
     * If the current byte is partially filled, it is padded with zeros.
     */
    flush(): void;
    /**
     * Returns the written bytes as a Uint8Array.
     * @returns {Uint8Array} The byte array containing the written bits.
     */
    getBytes(): Uint8Array;
}