import type { Span } from './tracer';
/**
 * Get the active span from the current async context
 */
export declare function getActiveSpan(): Span | undefined;
/**
 * Set the active span in the current async context
 * Uses enterWith to set the span in the current execution context
 */
export declare function setActiveSpan(span: Span | undefined): void;
/**
 * Run a function with a span as the active span
 * This is the recommended way to set active spans for async operations
 */
export declare function runWithSpan<T>(span: Span, fn: () => T): T;
/**
 * Run an async function with a span as the active span
 * This is the recommended way to set active spans for async operations
 */
export declare function runWithSpanAsync<T>(span: Span, fn: () => Promise<T>): Promise<T>;
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