import { Context } from '../context/types';
import { Span } from './span';
import { SpanOptions } from './SpanOptions';
/**
 * Tracer provides an interface for creating {@link Span}s.
 */
export interface Tracer {
    /**
     * Starts a new {@link Span}. Start the span without setting it on context.
     *
     * This method do NOT modify the current Context.
     *
     * @param name The name of the span
     * @param [options] SpanOptions used for span creation
     * @param [context] Context to use to extract parent
     * @returns Span The newly created span
     * @example
     *     const span = tracer.startSpan('op');
     *     span.setAttribute('key', 'value');
     *     span.end();
     */
    startSpan(name: string, options?: SpanOptions, context?: Context): Span;
}