import { TraceContext, TraceSource } from "./trace-context-service";
import { SpanContext } from "./tracer-wrapper";
/**
 * SpanContextWrapper is a proxy class for DatadogSpanContext
 * defined in `dd-trace-js`.
 */
export declare class SpanContextWrapper implements SpanContext {
    spanContext: any;
    source: TraceSource;
    constructor(spanContext: any, source: TraceSource);
    toSpanId(): string;
    toTraceId(): string;
    sampleMode(): number;
    toString: () => string;
    static fromTraceContext(traceContext: TraceContext): SpanContextWrapper | null;
}
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