/**
 * Environment variable loading
 *
 * Variable naming conventions:
 * - CLOUDFLARE_* - Standard wrangler/Cloudflare CLI variables
 * - CF_* - Shorter aliases for runtime use in Workers
 * - INDEXER_* - Indexer-specific configuration
 * - GITHUB_TOKEN - GitHub personal access token for private repos
 *
 * The indexer CLI accepts both conventions for flexibility, but
 * CLOUDFLARE_ACCOUNT_ID is preferred as it matches wrangler's convention.
 */
export interface EnvConfig {
    /** Cloudflare account ID */
    accountId?: string;
    /** Cloudflare API token */
    apiToken?: string;
    /** GitHub personal access token */
    githubToken?: string;
    /** Enable LLM-based content processing for web sources */
    useLLM: boolean;
    /** Cloudflare Workers AI model for content extraction */
    llmModel: string;
    /** Request timeout for LLM processing (ms) */
    llmTimeout: number;
    /** Concurrency for LLM processing */
    llmConcurrency: number;
    /** Chat API URL for cache invalidation */
    chatApiUrl?: string;
    /** Token for cache invalidation endpoint */
    cacheInvalidateToken?: string;
}
/**
 * Create a safe version of EnvConfig for logging.
 * Redacts sensitive values to prevent credential exposure in logs/errors.
 *
 * @param config - The environment config to redact
 * @returns A copy with sensitive values replaced with [REDACTED]
 */
export declare function redactEnvConfig(config: EnvConfig): Record<string, unknown>;
/**
 * Load environment variables from .env file and process.env
 *
 * Searches for .env file in current directory and parent directories,
 * allowing the CLI to be run from any subdirectory in the monorepo.
 *
 * Supported variables:
 * - CLOUDFLARE_ACCOUNT_ID (preferred) or CF_ACCOUNT_ID - Cloudflare account ID
 * - CLOUDFLARE_API_TOKEN - API token with Vectorize and AI permissions
 * - GITHUB_TOKEN - GitHub personal access token for private repos
 * - INDEXER_USE_LLM - Enable LLM processing (default: true)
 * - INDEXER_LLM_MODEL - Workers AI model to use
 * - INDEXER_LLM_TIMEOUT - Request timeout in ms
 * - INDEXER_LLM_CONCURRENCY - Number of parallel LLM requests
 */
export declare function loadEnv(): EnvConfig;
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