import type { ReadableSpan, SpanProcessor } from '@opentelemetry/sdk-trace-base';
export interface UsageEventsSpanProcessorOptions {
    runId: string;
    sessionId: string;
    phaseUsageLogPath: string;
}
export declare class UsageEventsSpanProcessor implements SpanProcessor {
    private readonly registrations;
    private readonly reportedWriteFailureRunIds;
    constructor(options?: UsageEventsSpanProcessorOptions);
    register(options: UsageEventsSpanProcessorOptions): () => void;
    onStart(): void;
    onEnd(span: ReadableSpan): void;
    private optionsForSpan;
    private safeAppend;
    forceFlush(): Promise<void>;
    shutdown(): Promise<void>;
}
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