import { A as AutotelConfig } from './init-CMuTaFAV.cjs';
import { SamplingPreset } from './sampling.cjs';
import '@opentelemetry/sdk-trace-base';
import '@opentelemetry/sdk-node';
import '@opentelemetry/resources';
import './event-subscriber.cjs';
import './logger.cjs';
import 'pino';
import '@opentelemetry/api';
import '@opentelemetry/sdk-metrics';
import '@opentelemetry/sdk-logs';
import './filtering-span-processor.cjs';
import './span-name-normalizer.cjs';
import './attribute-redacting-processor.cjs';
import './processors.cjs';

/**
 * YAML configuration loader for autotel
 *
 * Supports:
 * - Auto-discovery of autotel.yaml in cwd
 * - AUTOTEL_CONFIG_FILE env var override
 * - Environment variable substitution: ${env:VAR} and ${env:VAR:-default}
 *
 * @example Auto-discovery
 * ```yaml
 * # autotel.yaml in project root
 * service:
 *   name: my-service
 * exporter:
 *   endpoint: ${env:OTEL_EXPORTER_OTLP_ENDPOINT:-http://localhost:4318}
 * ```
 *
 * @example Explicit path
 * ```bash
 * AUTOTEL_CONFIG_FILE=./config/otel.yaml tsx --import autotel/auto src/index.ts
 * ```
 */

/**
 * YAML config structure
 * Maps to AutotelConfig with user-friendly naming
 */
interface YamlConfig {
    service?: {
        name?: string;
        version?: string;
        environment?: string;
    };
    exporter?: {
        endpoint?: string;
        protocol?: 'http' | 'grpc';
        headers?: Record<string, string>;
    };
    resource?: Record<string, string | number | boolean>;
    sampling?: {
        preset?: SamplingPreset;
        type?: 'adaptive' | 'always_on' | 'always_off' | 'ratio';
        ratio?: number;
        baseline_rate?: number;
        always_sample_errors?: boolean;
        always_sample_slow?: boolean;
        slow_threshold_ms?: number;
    };
    autoInstrumentations?: string[] | Record<string, {
        enabled?: boolean;
    }>;
    debug?: boolean;
}
/**
 * Load and parse YAML config file (auto-discovery)
 *
 * Automatically finds and loads autotel.yaml or uses AUTOTEL_CONFIG_FILE.
 * Returns null if no config file found (not an error - YAML config is optional).
 *
 * @returns Partial AutotelConfig or null if no config file found
 *
 * @example
 * const yamlConfig = loadYamlConfig();
 * if (yamlConfig) {
 *   init({ ...yamlConfig, debug: true });
 * }
 */
declare function loadYamlConfig(): Partial<AutotelConfig> | null;
/**
 * Load YAML config from a specific file path
 *
 * Unlike loadYamlConfig(), this throws if the file cannot be read.
 *
 * @param filePath - Path to YAML config file
 * @returns Partial AutotelConfig
 * @throws Error if file cannot be read or parsed
 *
 * @example
 * import { loadYamlConfigFromFile } from 'autotel/yaml';
 * import { init } from 'autotel';
 *
 * const config = loadYamlConfigFromFile('./config/otel.yaml');
 * init({ ...config, debug: true });
 */
declare function loadYamlConfigFromFile(filePath: string): Partial<AutotelConfig>;
/**
 * Check if a YAML config file exists (without loading it)
 *
 * @returns true if a config file would be found by loadYamlConfig()
 */
declare function hasYamlConfig(): boolean;

export { type YamlConfig, hasYamlConfig, loadYamlConfig, loadYamlConfigFromFile };