/**
 * Constants for span extraction without UnifiedHttpContext
 * Internal constants for span extraction functionality
 */
/**
 * Sources of span extraction
 */
export declare const SPAN_EXTRACTION_SOURCES: {
    readonly ACTIVE: "active";
    readonly EXTRACTED: "extracted";
    readonly FALLBACK: "fallback";
};
/**
 * Default values for span extraction
 */
export declare const SPAN_EXTRACTION_DEFAULTS: {
    readonly OPERATION_NAME: "standalone_operation";
    readonly PARENT_OPERATION_NAME: "extracted_operation";
    readonly FALLBACK_OPERATION_TYPE: "business";
    readonly FALLBACK_LAYER: "service";
    readonly CREATE_NEW_IF_NOT_FOUND: true;
};
/**
 * Span attributes for extracted spans
 */
export declare const SPAN_EXTRACTION_ATTRIBUTES: {
    readonly SOURCE_KEY: "span.source";
    readonly EXTRACTED_SOURCE: "extracted_from_headers";
    readonly FALLBACK_SOURCE: "fallback_new_trace";
    readonly TRACE_ROOT: "trace.root";
    readonly TRACE_EXTRACTED: "trace.extracted";
};