import { NodePrivacyLevel } from '@openobserve/browser-rum-core'; import type { RumConfiguration } from '@openobserve/browser-rum-core'; export declare const MAX_ATTRIBUTE_VALUE_CHAR_LENGTH = 1000000; export declare function serializeAttribute(element: Element, nodePrivacyLevel: NodePrivacyLevel, attributeName: string, configuration: RumConfiguration): string | number | boolean | null;