/**
 * Converts a hex string to a decimal number.
 *
 * @param hexString - The hex string to convert.
 * @public
 */
export declare function fromHex(hexString: string): number;
/**
 * Converts a number to a hex string.
 *
 * @param num - The number to convert to hex.
 * @public
 */
export declare function toHex(num: number): string;
/**
 * Checks if a value is a hex string.
 *
 * @param possibleHexString - The value to check.
 * @public
 */
export declare function isHex(possibleHexString: string): boolean;