import { TracerConfig } from './types';
import { ParentBasedSampler } from '@opentelemetry/core';
/**
 * Function to merge Default configuration (as specified in './config') with
 * user provided configurations.
 */
export declare function mergeConfig(userConfig: TracerConfig): {
    sampler: import("@opentelemetry/core").AlwaysOnSampler;
    traceParams: {
        numberOfAttributesPerSpan: number;
        numberOfLinksPerSpan: number;
        numberOfEventsPerSpan: number;
    };
} & {
    sampler: ParentBasedSampler;
} & TracerConfig;