export interface HandlerOptions {
    matchBareFromJid?: boolean;
    ignoreNamespaceFragment?: boolean;
}
/**
 * _Private_ helper class for managing stanza handlers.
 *
 * A Handler encapsulates a user provided callback function to be
 * executed when matching stanzas are received by the connection.
 * Handlers can be either one-off or persistant depending on their
 * return value. Returning true will cause a Handler to remain active, and
 * returning false will remove the Handler.
 *
 * Users will not use Handler objects directly, but instead they
 * will use {@link Connection.addHandler} and
 * {@link Connection.deleteHandler}.
 */
declare class Handler {
    handler: (stanza: Element) => boolean;
    ns: string;
    name: string;
    type: string | string[];
    id: string;
    from: string | null;
    options: HandlerOptions;
    user: boolean;
    /**
     * Create and initialize a new Handler.
     *
     * @param handler - A function to be executed when the handler is run.
     * @param ns - The namespace to match.
     * @param name - The element name to match.
     * @param type - The stanza type (or types if an array) to match.
     * @param id - The element id attribute to match.
     * @param from - The element from attribute to match.
     * @param options - Handler options
     */
    constructor(handler: ((stanza: Element) => boolean) | null, ns?: string | null, name?: string | null, type?: string | string[] | null, id?: string | null, from?: string | null, options?: HandlerOptions);
    /**
     * Returns the XML namespace of an element.
     * Resolved via {@link Strophe.getNamespace}, which reads the `xmlns`
     * attribute and falls back to `namespaceURI` so matching works regardless
     * of how the stanza's DOM was built (locally, via DOMParser, or via the
     * component transport's `createElementNS`).
     * If `ignoreNamespaceFragment` was passed in for this handler, then the
     * URL fragment will be stripped.
     * @param elem - The XML element with the namespace.
     * @returns The namespace, with optionally the fragment stripped.
     */
    getNamespace(elem: Element): string | null;
    /**
     * Tests if a stanza element (or any of its children) matches the
     * namespace set for this Handler.
     * @param elem - The XML element to test.
     * @returns true if the stanza matches and false otherwise.
     */
    namespaceMatch(elem: Element): boolean;
    /**
     * Tests if a stanza matches the Handler.
     * @param elem - The XML element to test.
     * @returns true if the stanza matches and false otherwise.
     */
    isMatch(elem: Element): boolean;
    /**
     * Run the callback on a matching stanza.
     * @param elem - The DOM element that triggered the Handler.
     * @returns A boolean indicating if the handler should remain active.
     */
    run(elem: Element): boolean | null;
    /**
     * Get a String representation of the Handler object.
     */
    toString(): string;
}
export default Handler;
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