/**
 * Integer division with remainder.
 *
 * @param v Value.
 * @param d Divisor.
 * @returns Integer divided and remainder.
 */
export declare function divmod(v: number, d: number): number[];
/**
 * Get environment variable value.
 *
 * @param name Variable name.
 * @returns String value or null.
 */
export declare function env(name: string): string | null;
/**
 * Get environment variable as a boolean value.
 *
 * @param name Variable name.
 * @returns Boolean value.
 */
export declare function envBool(name: string): boolean | null;
/**
 * Check if the environment variable value is true.
 *
 * @param name Variable name.
 * @returns Boolean value.
 */
export declare function envTrue(name: string): boolean;
/**
 * Check if the environment variable value is false.
 *
 * @param name Variable name.
 * @returns Boolean value.
 */
export declare function envFalse(name: string): boolean;
/**
 * Get environment variable as a number.
 *
 * @param name Variable name.
 * @returns Number value.
 */
export declare function envNumber(name: string): number | null;
/**
 * Get environment variable as a number.
 *
 * @param name Variable name.
 * @returns Number value.
 */
export declare function envInteger(name: string): number | null;