import Role from './Role';
declare class Frame {
    roles: Role[];
    constructor(roles: Role[]);
    static getPredicateIndex(frame: Frame): number;
    /**
     * get the token index span covered by this frame
     * @param frame {Frame}
     * @returns {[number, number]} [begin, end)
     */
    static getTokenSpan(frame: Frame): [number, number];
}
export default Frame;