import { PerformanceConfig } from './config-loader.js';
export interface EnvironmentVariableConfig {
    key: string;
    defaultValue: string | number | boolean;
    type: 'string' | 'number' | 'boolean';
    required: boolean;
    description: string;
    validation?: (value: unknown) => boolean;
    transform?: (value: string) => unknown;
}
export declare const ENVIRONMENT_VARIABLES: Record<string, EnvironmentVariableConfig>;
export declare const DEFAULT_PERFORMANCE_CONFIG: PerformanceConfig;
export declare function getEnvironmentValue<T = unknown>(envVarConfig: EnvironmentVariableConfig, context?: string): T;
export declare function validateAllEnvironmentVariables(): {
    valid: boolean;
    errors: string[];
    warnings: string[];
};
export declare function getEnvironmentVariableDocumentation(): Record<string, string>;
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