import * as opentelemetry from "@opentelemetry/api";
export type TCarrier = {
    traceparent?: string;
    tracestate?: string;
};
export type SpanCtx = {
    name: string;
    spanKind?: opentelemetry.SpanKind;
    rootSpan?: boolean;
    traceScope?: string;
    traceContext?: TCarrier;
};
type AsyncCallbackFn<T> = (span: opentelemetry.Span) => Promise<T>;
export declare function instrumentAsync<T>(ctx: SpanCtx, callback: AsyncCallbackFn<T>): Promise<T>;
type SyncCallbackFn<T> = (span: opentelemetry.Span) => T;
export declare function instrumentSync<T>(ctx: SpanCtx, callback: SyncCallbackFn<T>): T;
export declare const getCurrentSpan: () => opentelemetry.Span | undefined;
export declare const traceException: (ex: unknown, span?: opentelemetry.Span, code?: string) => void;
export declare const addUserToSpan: (attributes: {
    userId?: string;
    projectId?: string;
    email?: string;
    orgId?: string;
    plan?: string;
}, span?: opentelemetry.Span) => opentelemetry.Context | undefined;
export declare const getTracer: (name: string) => opentelemetry.Tracer;
export declare const recordGauge: (stat: string, value?: number | undefined, tags?: {
    [tag: string]: string | number;
} | undefined) => void;
export declare const recordIncrement: (stat: string, value?: number | undefined, tags?: {
    [tag: string]: string | number;
} | undefined) => void;
export declare const recordHistogram: (stat: string, value?: number | undefined, tags?: {
    [tag: string]: string | number;
} | undefined) => void;
export declare const recordDistribution: (stat: string, value?: number | undefined, tags?: {
    [tag: string]: string | number;
} | undefined) => void;
/**
 * Converts a queue name to the matching datadog metric name.
 * Consumer only needs to append the relevant suffix.
 *
 * Example: `legacy-ingestion-queue` -> `langfuse.queue.legacy_ingestion`
 */
export declare const convertQueueNameToMetricName: (queueName: string) => string;
export {};
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