import type { AttributeValue } from "@opentelemetry/api";
import type { MaskingRuleArgs } from "./types";
/**
 * A function that masks (redacts or removes) sensitive information from span attributes based on the trace config.
 * @param params - The masking parameters
 * @param params.config - The TraceConfig to use to determine if the value should be masked
 * @param params.key - The key of the attribute to mask
 * @param params.value - The value of the attribute to mask
 * @returns The redacted value or undefined if the value should be masked, otherwise the original value
 */
export declare function mask({ config, key, value }: MaskingRuleArgs): AttributeValue | undefined;
//# sourceMappingURL=maskingRules.d.ts.map