import type { SpanProcessor, ReadableSpan } from '@opentelemetry/sdk-trace-base';
import type { Context } from '@opentelemetry/api';
export declare class LiveFileSpanProcessor implements SpanProcessor {
    private beatMs;
    private active;
    private timer;
    constructor(beatMs?: number);
    onStart(span: ReadableSpan, _ctx: Context): void;
    onEnd(span: ReadableSpan): void;
    forceFlush(): Promise<void>;
    shutdown(): Promise<void>;
}
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