/**
 * Public constants for unified telemetry middleware
 * These constants are exported for consumer projects
 */
/**
 * HTTP header names for trace propagation
 */
export declare const TELEMETRY_HEADERS: {
    readonly W3C_TRACEPARENT: "traceparent";
    readonly W3C_TRACESTATE: "tracestate";
    readonly B3_TRACE_ID: "x-b3-traceid";
    readonly B3_SPAN_ID: "x-b3-spanid";
    readonly B3_SAMPLED: "x-b3-sampled";
    readonly B3_FLAGS: "x-b3-flags";
    readonly B3_PARENT_SPAN_ID: "x-b3-parentspanid";
    readonly REQUEST_ID: "x-request-id";
    readonly CORRELATION_ID: "x-correlation-id";
};
/**
 * Telemetry layer identifiers
 */
export declare const TELEMETRY_LAYERS: {
    readonly HTTP: "http";
    readonly API: "api";
    readonly SERVICE: "service";
    readonly DATA: "data";
    readonly CORE: "core";
    readonly INTEGRATION: "integration";
    readonly CUSTOM: "custom";
};
/**
 * Telemetry operation types
 */
export declare const TELEMETRY_OPERATION_TYPES: {
    readonly ENDPOINT: "endpoint";
    readonly MIDDLEWARE: "middleware";
    readonly PRODUCE: "produce";
    readonly CONSUME: "consume";
    readonly DATABASE: "database";
    readonly COMMAND: "command";
    readonly QUERY: "query";
    readonly LOGIC: "logic";
    readonly INTEGRATION: "integration";
    readonly AUTH: "auth";
    readonly CUSTOM: "custom";
};
/**
 * Span kinds for telemetry operations
 */
export declare const TELEMETRY_SPAN_KINDS: {
    readonly INTERNAL: "internal";
    readonly SERVER: "server";
    readonly CLIENT: "client";
    readonly PRODUCER: "producer";
    readonly CONSUMER: "consumer";
};