变量：ENV

const ENV: object;

readonly apiKey: "TYPESAFE_API_KEY" = "TYPESAFE_API_KEY";

readonly baseURL: "TYPESAFE_BASE_URL" = "TYPESAFE_BASE_URL";

readonly defaultModel: "TYPESAFE_DEFAULT_MODEL" = "TYPESAFE_DEFAULT_MODEL";

readonly logLevel: "TYPESAFE_LOG_LEVEL" = "TYPESAFE_LOG_LEVEL";