import { IContextFreeGrammar } from './types';
interface CykTableCellCombination<Type extends Set<string> | Array<string>> {
    parts: [Type?, Type?];
    merged: Type;
}
declare type CykTableDetailed<Type extends Set<string> | Array<string>> = Array<Array<{
    combinations: CykTableCellCombination<Type>[];
    value: Type;
}>>;
/**
 * Parses a sentence given a cfg
 * @param cfg Input cfg production rules and start variable
 * @param sentenceTokens An array of sentence tokens
 * @returns Boolean value on whether the sentence is part of the grammar and steps that the CYK algo took to resolve it
 */
export declare function cykParse(cfg: Pick<IContextFreeGrammar, 'productionRules' | 'startVariable'>, sentenceTokens: string[]): {
    verdict: boolean;
    cykTableDetailed: CykTableDetailed<string[]>;
    cykTable: string[][];
    nodeVariablesRecord: Record<string, string[]>;
    sentenceTokens: string[];
};
export {};