/**
 * Gets the current high-resolution time based on the environment.
 * @returns The current high-resolution time in milliseconds or bigint.
 */
export declare function getHighResolutionTime(): number | bigint;
/**
 * Converts high-resolution time to milliseconds.
 * @param start The start time.
 * @param end The end time.
 * @returns The time difference in milliseconds.
 */
export declare function calculateTimeInMilliseconds(start: number | bigint, end: number | bigint): number;