export declare class ByteStringReader {
    currentIdx: number;
    byteString: string;
    constructor(byteString: string);
    /**
     * Sets the current index of the reader
     * @param idx Index value to set `currentIdx` to
     */
    setIndex(idx: number): void;
    /**
      * Gets the number of bytes remaining in the hexString
      */
    getNumBytesRemaining(): number;
    /**
     * Reads `numBytes` from the byteString as an integer
     * @param numBytes Number of bytes to read
     * @returns An integer
     */
    readInt(numBytes: number | string): number;
    /**
     * Reads numBytes bytes from the byteString and returns them as a hex string
     * @param numBytes Number of bytes to read
     * @returns Hex string of the bytes read
     */
    readBytes(numBytes: number | string): string;
    /**
     * Moves `currentIdx` forward by `numBytes` bytes
     * @param numBytes Number of bytes to skip
     */
    skipBytes(numBytes: number): void;
    /**
     * Reads a variable length amount of bytes, with the first `numLenBytes` bytes representing the
     * length, and the remaining `len` bytes representing the value.
     * @param numLenBytes Number of bytes to read for the length
     * @returns The value from the bytes read
     */
    readVarLenBytes(numLenBytes: number): string;
    /**
     * Reads a `len` number of bytes32 values from the byteString
     * @param len Number of bytes32 values to read
     * @returns An array of bytes32 values
     */
    readFixedLenBytes32(len: number): string[];
    /**
     * Checks that all bytes in the byteString have been read
     * @returns true if all bytes in the byteString have been read, false otherwise
     */
    validateAllBytesRead(): boolean;
    /**
     * Gets a slice of the current byteString in number of bytes (number of string chars * 2)
     * @param index Index to start slice
     * @param numBytes Number of bytes to include in slice
     * @returns Hexstring of the byte slice
     */
    getByteSlice(index: number, numBytes: number): string;
}