import type { ObjectOrArray } from "@twin.org/core";
import type { IJsonLdNodeObject } from "@twin.org/data-json-ld";
import type { ActivityStreamsObjectTypes } from "./activityStreamsObjectTypes.js";
import type { IActivityStreamsObject } from "./IActivityStreamsObject.js";
/**
 * A W3C Activity Streams Relationship.
 *
 * A `Relationship` can be used to describe a relationship between two entities.
 * It is commonly used as a reified statement, using `subject` (subject), `relationship`
 * (predicate), and `object` (object).
 * @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-relationship
 */
export interface IActivityStreamsRelationship extends IActivityStreamsObject {
    /**
     * Relationship type.
     */
    type: ObjectOrArray<typeof ActivityStreamsObjectTypes.Relationship | string>;
    /**
     * Subject of the relationship.
     * @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-subject
     */
    subject?: string | IJsonLdNodeObject;
    /**
     * Object of the relationship.
     * @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-object-term
     */
    object?: IJsonLdNodeObject;
    /**
     * The relationship predicate.
     *
     * For example, a URI identifying the relationship type.
     * @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-relationship
     */
    relationship?: string | IJsonLdNodeObject;
}