type EnvRecord = Record<string, string | undefined>;
/**
 * App environments that may boot without production secret checks.
 * Staging is not in this set: it is typically internet-exposed with
 * production-like data, so it must use real secrets.
 */
declare const NON_PRODUCTION_APP_ENVS: Set<string>;
/**
 * Production when APP_ENV or NODE_ENV says so, including `staging`.
 * Unrecognized APP_ENV values (for example "prod" or "Production" after
 * case-folding fails to match "production") default to production so secrets
 * checks cannot be skipped by capitalization or a typo.
 */
declare function isProductionEnv(env?: EnvRecord): boolean;
/** True only for the exact string "true". Unset, "false", "0", "FALSE", and "off" are off. */
declare function envFlagEnabled(value: string | undefined): boolean;
export type { EnvRecord };
export { envFlagEnabled, isProductionEnv, NON_PRODUCTION_APP_ENVS };