export declare class MarkovNode {
    children: Map<number, MarkovNode>;
    weight: number;
}
interface MarkovVocab {
    tokens: string[];
    indexes: Map<string, number>;
}
export declare class MarkovCoil {
    depth: number;
    vocab: MarkovVocab;
    root: MarkovNode;
    /**
     * Create new markov chain for token prediction.
     * @param {string[]} tokens Tokens to generate chain with.
     * @param {number} [depth=3] Depth of the chain. A depth of n will use n tokens in its search for a prediction (n-gram).
     */
    constructor(tokens: string[], depth?: number);
    private getIndex;
    private getToken;
    private addTokenToVocab;
    private addSequenceToChain;
    private createChain;
    /**
     * Predict next possible values for the given sequence of tokens.
     * @param {string[]} context An array of tokens.
     * @returns A mapping of possible tokens to their probability of occuring.
     */
    predictions(context: string[]): Record<string, number>;
    private weightedChoice;
    /**
     * Predict the next token given a starting sequence.
     * @param {string[]} sequence The starting sequence of tokens.
     * @param {boolean} [weighted=true] If true, will use weighted random choice from all possible predictions. If false, will use random choice.
     * @returns {string} The predicted token.
     */
    predict(sequence: string[], weighted?: boolean): string | null;
    /**
     * Predicts a sequence of tokens that could follow the starting sequence.
     * @param {token[]} sequence The starting sequence of tokens.
     * @param {number} length The length of the predicted sequence.
     * @param {boolean} [weighted=true] If true, will use weighted random choice from all possible predictions. If false, will use random choice.
     * @returns {string[]} A sequence of predicted tokens.
     */
    predictSequence(sequence: string[], length: number, weighted?: boolean): string[];
    /** Prints tabulated trie structure to console. Useful for debugging. */
    prettyPrint(useVocab?: boolean): void;
}
export {};