import type { IKeyValue, ISpan, ISpanEvent, SpanInfo } from "./types.mjs";
/**
* A single OTLP span. Declared as a class (fixed shape, shared prototype) so
* every span is the same hidden class — cheaper to build and serialize than ad
* hoc literals. The Vercel runtime validates the payload strictly, so every
* OTLP field is present even when empty (omitting e.g. `events` or `attributes`
* makes the runtime drop the whole batch).
*/
export declare class Span implements ISpan {
	traceId: string;
	spanId: string;
	parentSpanId: string;
	name: string;
	kind: number;
	startTimeUnixNano: string;
	endTimeUnixNano: string;
	traceState: string;
	droppedAttributesCount: number;
	events: ISpanEvent[];
	droppedEventsCount: number;
	links: never[];
	droppedLinksCount: number;
	attributes: IKeyValue[];
	status: {
		code: number;
		message: string;
	};
	constructor(traceId: string, parentSpanId: string, info: SpanInfo, startTimeUnixNano: string, error: unknown);
	/** Wall-clock nanoseconds as a string, as required by OTLP `*UnixNano` fields. */
	static nowUnixNano(): string;
	/** 8 random bytes, hex-encoded — an OTLP span id (never the all-zero sentinel). */
	static randomSpanId(): string;
}