import { type Context, type SpanContext } from "@opentelemetry/api";
import { type ReadableSpan } from "@opentelemetry/sdk-trace-base";
export declare const TRACESTATE_SW_KEY = "sw";
export declare const TRACESTATE_TRACE_OPTIONS_RESPONSE_KEY = "xtrace_options_response";
export declare const EQUALS_W3C = "####";
export declare const COMMA_W3C = "....";
export interface TraceOptions {
    header: string;
    signature?: string;
    triggerTrace?: boolean;
    timestamp?: number;
    swKeys?: string;
    custom: Record<string, string>;
    ignored: [string, string | undefined][];
}
export declare function getTraceOptions(context: Context): TraceOptions | undefined;
export declare function setTraceOptions(context: Context, traceOptions: TraceOptions): Context;
export declare function swValue(spanContext: SpanContext): string;
export declare function traceParent(spanContext: SpanContext): string;
export declare function parentSpanContext(span: ReadableSpan): SpanContext | undefined;
export declare function isEntrySpan(span: ReadableSpan): boolean;
export declare function setTransactionName(context: Context, name: string): boolean;
export declare function waitUntilReady(timeout: number): number;
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