/**
 * Available configuration sources
 */
export declare const ConfigSource: {
    readonly env: "env";
    readonly db: "db";
};
export type ConfigSource = (typeof ConfigSource)[keyof typeof ConfigSource];
/**
 * Metadata for a configuration value
 */
export interface ConfigDefinition<T> {
    defaultValue: T;
    envVarName?: string;
    isSecret?: boolean;
}
/**
 * Helper function for defining configurations with type safety
 */
export declare const defineConfig: <T>(config: ConfigDefinition<T>) => ConfigDefinition<T>;
/**
 * Interface for loading configuration values
 */
export interface IConfigLoader<K extends string, V extends Record<K, any>> {
    /**
     * Load configurations from environment variables
     */
    loadFromEnv(): Promise<RawConfigData<K, V>>;
    /**
     * Load configurations from database
     */
    loadFromDB(): Promise<RawConfigData<K, V>>;
}
export type RawConfigData<K extends string, V extends Record<K, any>> = Record<K, {
    value: V[K];
    definition?: ConfigDefinition<V[K]>;
}>;
export type UpdateConfigOptions = {
    skipPubsub?: boolean;
    removeIfUndefined?: boolean;
};
/**
 * Interface for managing configuration values
 */
export interface IConfigManager<K extends string, V extends Record<K, any>> {
    /**
     * Load configurations
     * @param options.source - Specify which source to load from
     */
    loadConfigs(options?: {
        source?: ConfigSource;
    }): Promise<void>;
    /**
     * Get a configuration value
     */
    getConfig<T extends K>(key: T, source?: ConfigSource): V[T];
    /**
     * Update a configuration value
     */
    updateConfig<T extends K>(key: T, value: V[T], options?: UpdateConfigOptions): Promise<void>;
    /**
     * Update multiple configuration values
     */
    updateConfigs(updates: Partial<{
        [T in K]: V[T];
    }>, options?: UpdateConfigOptions): Promise<void>;
    /**
     * Remove multiple configuration values
     */
    removeConfigs(keys: K[], options?: UpdateConfigOptions): Promise<void>;
    /**
     * Get environment variables managed with ConfigDefinitions
     */
    getManagedEnvVars(showSecretValues: boolean): Record<string, string>;
}