export declare type EnvironmentName = "dev" | "preprod" | "prod";
/**
 *
 * This function will return the default postgres server hostname for a given app name and environnement
 *
 * ```typescript
 * import { getPgServerHostname } from "@socialgouv/kosko-charts/utils"
 *
 * const hostname = getPgServerHostname("app-admin", "prod");
 * ```
 * @category utils
 * @return {ManifestType}
 */
export declare const getPgServerHostname: (appName: string, env?: EnvironmentName) => string;