/**
 * Browser Resilient Exporter
 *
 * Simplified resilient exporter for browser environments.
 * Ensures export failures don't affect the main thread.
 */
import type { SpanExporter, ReadableSpan } from "@opentelemetry/sdk-trace-base";
import { ExportResult } from "@opentelemetry/core";
/**
 * Configuration for the browser resilient exporter.
 */
export interface BrowserResilientExporterConfig {
    /** Underlying exporter to wrap */
    delegate: SpanExporter;
    /** Max items to buffer before dropping (default: 512, lower than Node for memory) */
    maxQueueSize?: number;
    /** Export timeout in ms (default: 10000, shorter for browser) */
    exportTimeoutMs?: number;
    /** Callback when items are dropped */
    onDrop?: (count: number, reason: "queue_full" | "export_failed" | "timeout") => void;
}
/**
 * Browser-compatible resilient exporter.
 *
 * CRITICAL: Export failures must never block or affect the main thread.
 * This wrapper catches all errors and timeouts.
 */
export declare class BrowserResilientExporter implements SpanExporter {
    private readonly delegate;
    private readonly maxQueueSize;
    private readonly exportTimeoutMs;
    private readonly onDrop;
    private queuedCount;
    private shuttingDown;
    constructor(config: BrowserResilientExporterConfig);
    /**
     * Export spans with resilient error handling.
     */
    export(spans: ReadableSpan[], resultCallback: (result: ExportResult) => void): void;
    shutdown(): Promise<void>;
    forceFlush(): Promise<void>;
}
//# sourceMappingURL=resilient-exporter.d.ts.map