import type { AttributeValue, Span } from '@opentelemetry/api';
import { Size } from '@rsdk/common';
import { type Observable } from 'rxjs';
/**
 * Maximum span attribute size
 */
export declare const MAX_ATTRIBUTE_SIZE: Size;
/**
 * Makes correct opentelemetry span attribute from any value
 * @param data unknown value of any type
 * @returns AttributeValue
 */
export declare const toAttribute: (data: unknown) => AttributeValue;
/**
 * Adds data to span with key "result" and ends it.
 * @param span Span
 * @param data Any piece of data
 */
export declare const endWithResult: (span: Span, data: unknown) => void;
/**
 * Adds error object to span and ends it
 * @param span Span
 * @param error Error
 */
export declare const endWithError: (span: Span, error: Error) => void;
export declare const processSyncResult: <T = unknown>(result: T, span: Span) => T;
export declare const processObservableResult: <T = unknown>(result: Observable<T>, span: Span) => Observable<T>;
export declare const processPromiseResult: <T = unknown>(result: Promise<T>, span: Span) => Promise<T>;