/**
 * Enums for data types that can be nested in Arrays, Sets, and Maps during type conversion from environment variables.
 * - string, number, boolean, and object are the string literal values when `typeof` is ran against variables of those types.
 * - Date and RegExp are classes that instances can be instantiated of.
 */
export declare enum NestableDataTypes {
    String = "string",
    Number = "number",
    Boolean = "boolean",
    Date = "Date",
    RegExp = "RegExp",
    Object = "object"
}
/**
 * Enums for data types that cannot be nested in Arrays, Sets, and Maps during type conversion form environment variables.
 * - Array, Set, and Map are classes that instances can be instantiated of.
 */
export declare enum NonNestableDataTypes {
    Array = "Array",
    Set = "Set",
    Map = "Map"
}
/**
 * Supported file extensions for config files
 */
export declare enum FileTypes {
    Json = ".json"
}
/**
 * The default environments
 */
export declare enum Environments {
    Development = "development",
    Testing = "testing",
    Staging = "staging",
    Production = "production"
}
/**
 * Command line arguments that can be specified when starting your application
 */
export declare enum CommandLineArgs {
    Env = "--env=",
    EnvPath = "--env-path=",
    EnvDir = "--env-dir=",
    EnvNames = "--env-names=",
    ConfigPath = "--config-path=",
    ConfigDir = "--config-dir="
}
/**
 * Environment variables that can be set to change configurations
 */
export declare enum EnvArgs {
    Env = "NODE_ENV",
    EnvPath = "ENV_PATH",
    EnvDir = "ENV_DIR",
    EnvNames = "ENV_NAMES",
    ConfigPath = "CONFIG_PATH",
    ConfigDir = "CONFIG_DIR"
}