import * as Tp from 'thingpedia';
import { Ast, SchemaRetriever } from 'thingtalk';
import { SimulationDatabase } from '../../dialogue-agent/simulator/types';
/**
 * Convert a ThingTalk dialogue state to a set of MultiWOZ-style slots.
 */
export default class SlotExtractor {
    private _tpClient;
    private _schemas;
    private _database;
    private _tokenizer;
    private _omittedSlots;
    private _cachedEntityMatches;
    constructor(locale: string, tpClient: Tp.BaseClient | null, schemaRetriever: SchemaRetriever, database: SimulationDatabase | undefined, omittedSlots?: string[]);
    private _isWellKnownEntity;
    private _tokenizeSlot;
    private _resolveEntity;
    private _safeLookupEntity;
    private _valueToSlot;
    extractSlots(state: Ast.Node): Promise<Record<string, string>>;
}