import { Config } from '@contrast/config';
import { AxiosRequestConfig, AxiosResponse } from 'axios';
/**
 * Logs the config object in the format used by the agent (the report format is used in
 * diagnostics capabilities). Leverages the .getReport() redaction functionality to make
 * a copy of the config with sensitive values masked.
 */
export declare function config(config: Config): any;
/**
 * Serializes errors using pino's `errWithCause` so that an error's `.cause` is
 * preserved as a nested, structured property (recursing through chained causes)
 * rather than being flattened into the message/stack. Also hides the verbose
 * `stdout`/`stderr` fields from child_process errors.
 */
export declare function err(error: Error): any;
/** Excludes irrelevant information from the metrics object.  */
export declare function metrics({ start, timeout, ...metrics }: any): any;
/**
 * Serializes requests for the contrast-ui http logger.
 */
export declare function req(config: AxiosRequestConfig): {
    id: any;
    method: string | undefined;
    url: string | undefined;
    data: any;
    contentLength: any;
};
/**
 * Serializes response for the contrast-ui http logger.
 */
export declare function res(response: AxiosResponse): {
    status: number;
    data: any;
};
//# sourceMappingURL=serializers.d.ts.map