/**
 * Smart defaults and environment validation for configuration management
 * @module @bloomneo/appkit/config
 * @file src/config/defaults.ts
 *
 * @llm-rule WHEN: App startup - need to parse UPPER_SNAKE_CASE environment variables
 * @llm-rule AVOID: Calling multiple times - expensive parsing, use lazy loading in get()
 * @llm-rule NOTE: Called once at startup, cached globally for performance
 */
export interface ConfigValue {
    [key: string]: string | number | boolean | ConfigValue;
}
export interface AppConfig extends ConfigValue {
    app: {
        name: string;
        environment: string;
        port?: number;
        host?: string;
    };
    [key: string]: any;
}
/**
 * Check if environment variable is a framework variable that should be ignored
 * @llm-rule WHEN: Filtering out framework variables from app config parsing
 * @llm-rule AVOID: Parsing framework variables as app config - they serve different purposes
 * @llm-rule NOTE: Bloomneo AppKit uses BLOOM_* and FLUX_* for internal configuration
 */
export declare function isFrameworkVariable(envKey: string): boolean;
/**
 * Check if environment variable is a system variable that should be ignored
 * @llm-rule WHEN: Filtering out system variables from app config validation
 * @llm-rule AVOID: Validating system variables - they don't follow our conventions
 */
export declare function isSystemVariable(envKey: string): boolean;
/**
 * Builds the entire configuration object from process.env
 * @llm-rule WHEN: App startup to get production-ready configuration from environment
 * @llm-rule AVOID: Calling repeatedly - validates environment each time, expensive operation
 * @llm-rule NOTE: Called once at startup, cached globally for performance
 * @llm-rule CONVENTION: Only processes non-framework variables for user config
 * @llm-rule CONVENTION: Variables with BLOOM_* and FLUX_* are AppKit internal
 */
export declare function buildConfigFromEnv(): AppConfig;
/**
 * Validates critical configuration at startup
 * @llm-rule WHEN: App startup to ensure required config is present
 * @llm-rule AVOID: Skipping validation - missing config causes runtime errors
 * @llm-rule NOTE: Add your app-specific required config here
 */
export declare function validateConfig(config: AppConfig): void;
/**
 * Gets smart defaults with validation
 * @llm-rule WHEN: App startup to get production-ready configuration
 * @llm-rule AVOID: Calling repeatedly - expensive validation, cache the result
 */
export declare function getSmartDefaults(): AppConfig;
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