import type { Word } from "../dic/word";
export declare class NgramSuggestionBuilder {
    /** The misspelling that suggestions are being built for. */
    private misspelling;
    /** A set of already known suggestions that should be skipped. */
    private known;
    /**
     * Sets the similarity factor.
     *
     * - `5`: The default value.
     * - `0`: Fewer ngram suggestions, but always at least one.
     * - `10`: Maximum value, yields `MAXNGRAMSUGS` number of suggestions.
     */
    private maxDiff;
    /**
     * If true, all bad ngram suggestions will be removed, rather than
     * keeping at least one.
     */
    private onlyMaxDiff;
    /**
     * Produces less suggestions if true, so that phonetic suggestion
     * system isn't skipped due to a large amount of ngram suggestions.
     */
    private hasPhonetic;
    /** The "root" scores for potential suggestions for a misspelling. */
    private roots;
    constructor(
    /** The misspelling that suggestions are being built for. */
    misspelling: string, 
    /** A set of already known suggestions that should be skipped. */
    known: Set<string>, 
    /**
     * Sets the similarity factor.
     *
     * - `5`: The default value.
     * - `0`: Fewer ngram suggestions, but always at least one.
     * - `10`: Maximum value, yields `MAXNGRAMSUGS` number of suggestions.
     */
    maxDiff: number, 
    /**
     * If true, all bad ngram suggestions will be removed, rather than
     * keeping at least one.
     */
    onlyMaxDiff?: boolean, 
    /**
     * Produces less suggestions if true, so that phonetic suggestion
     * system isn't skipped due to a large amount of ngram suggestions.
     */
    hasPhonetic?: boolean);
    /**
     * Steps the builder forward by providing another {@link Word} to process.
     *
     * @param word - The {@link Word} to process.
     */
    step(word: Word): void;
    /** Finishes the builder and yields the resulting suggestions (as strings). */
    finish(): Generator<string, void, unknown>;
    /**
     * Filters out terrible guesses based on their score or if they were already known.
     *
     * @param guesses - A list of tuples, containing a score and guess, in that order.
     */
    private filterGuesses;
}