import type { TracingOptions } from './tracing.module';
import type { TracingHeaderMappings } from './types';
/**
 * Header mappings injection token
 */
export declare const HEADER_MAPPINGS: unique symbol;
/**
 * Default mappings for tracing headers
 */
export declare const DEFAULT_TRACING_HEADERS: TracingHeaderMappings[];
/**
 * Default tracing options
 */
export declare const DEFAULT_TRACING_OPTIONS: TracingOptions;