import { Context } from "@opentelemetry/api";
import { ReadableSpan, Span, SpanProcessor } from "@opentelemetry/sdk-trace-base";
import { PerformanceCounterMetrics } from "../metrics/performanceCounters";
/**
 * Azure Monitor Span Processor.
 * @internal
 */
export declare class AzureMonitorSpanProcessor implements SpanProcessor {
    private readonly _metricHandler;
    constructor(metricHandler: PerformanceCounterMetrics);
    forceFlush(): Promise<void>;
    onStart(span: Span, _context: Context): void;
    onEnd(span: ReadableSpan): void;
    shutdown(): Promise<void>;
}