/**
 * Represents the source of a {@link Result}.
 *
 * @public
 */
export declare enum Source {
    /** The result is from an Answers Knowledge Graph. */
    KnowledgeManager = "KNOWLEDGE_MANAGER",
    /** The result is from Google Custom Search Engine. */
    Google = "GOOGLE_CSE",
    /** The result is from Bing Search Engine. */
    Bing = "BING_CSE",
    /** The result is from Zendesk. */
    Zendesk = "ZENDESK",
    /** The result is from Algolia. */
    Algolia = "ALGOLIA",
    /** The result was from a custom source. */
    Custom = "CUSTOM_SEARCHER"
}