import type { OptionalLinkProperties } from "../types/value/link";
/**
 * Returns optional properties only available to link fields. Link fields can
 * have the same shape as content relationship and link to media fields,
 * requiring special treatment to extract link-specific properties.
 *
 * @param input - The content relationship or link to media field from which the
 *   link properties will be extracted.
 *
 * @returns Optional link properties that `input` might have.
 */
export declare const getOptionalLinkProperties: (input: OptionalLinkProperties) => OptionalLinkProperties;