import { Context, Sampler, SamplingResult } from "@opentelemetry/api";
import { ParentBasedSampler } from "@opentelemetry/sdk-trace-base";
/**
 * Sampler that respects the ignore flag of the FW4 tag. If no FW4 tag exists the span
 * is sampled.
 */
export declare class DtFw4TagSampler implements Sampler {
    shouldSample(context: Context): SamplingResult;
    toString(): string;
}
export declare class DtSampler extends ParentBasedSampler {
    constructor();
    toString(): string;
}
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