/**
 * Unwraps a value that may be undefined or null, throwing an error if the value is absent
 * @template T The type of the value to unwrap
 * @param value The value to unwrap (may be undefined or null)
 * @param message The error message to throw if the value is absent
 * @returns The unwrapped value of type T
 * @throws {Error} If the value is undefined or null
 */
export declare const unwrap: <T>(value: T | undefined | null, message: string) => T;