/**
 * Configuration for makeJWT.
 *
 * @property env - Environment variables object (default: process.env)
 */
export type MakeJWTConfig = {
    env?: NodeJS.ProcessEnv;
};
/**
 * Create a signed JWT token for AMO API authentication using the
 * `AMO_JWT_ISS_KEY` and `AMO_JWT_SECRET` environment variables.
 *
 * @returns A signed HS256 JWT string
 * @throws Error if the required environment variables are not set
 */
export declare const makeJWT: ({ env }?: MakeJWTConfig) => string;