import { CapType } from "../constants.js";
/**
 * A class containing casing-related algorithms for a language. This is a
 * class so that it may be extended by subclasses, e.g. German which has
 * special handling of the "sharp S" character.
 */
export declare class Casing {
    /**
     * Guess a word's capitalization.
     *
     * @param word - The word to check.
     */
    guess(word: string): CapType;
    /**
     * Lowercases a word. This returns an array of potential variations of
     * lowercasing. This is done because certain languages (really, just
     * German) have multiple ways of representing the same word in lowercase.
     *
     * @param word - The word to lowercase.
     */
    lower(word: string): string[];
    /**
     * Uppercases a word.
     *
     * @param word - The word to uppercase.
     */
    upper(word: string): string;
    /**
     * Titlecases a word.
     *
     * @param word - The word to titlecase.
     */
    capitalize(word: string): string[];
    /**
     * Lowercases just the first letter of a word. Returns an array for the
     * same reasons as {@link Casing.lower}.
     *
     * @param word - The word to lowercase the first letter of.
     */
    lowerfirst(word: string): string[];
    /**
     * Returns a list of potential ways a word may have been cased in the
     * dictionary, if we consider it to be spelled correctly but potentially
     * *cased* incorrectly. The first item in the returned list will be the
     * {@link CapType} of the given word.
     *
     * @param word - The word to return the variations of.
     */
    variants(word: string): [CapType, ...string[]];
    /**
     * Returns a list of potential ways a word might have been cased if it
     * seems to be a misspelling. The first item in the list will be the
     * {@link CapType} of the given word.
     *
     * @param word - The word to return the corrections of.
     */
    corrections(word: string): [CapType, ...string[]];
    /**
     * Used by the suggestion algorithm. If a misspelled word has been found
     * in the dictionary, but is inconsistent with the casing of the word
     * found in the dictionary, this method will be used to attempt to
     * "coerce" the dictionary word to be cased like how the original misspelling was.
     *
     * @param word - The word to coerce.
     * @param cap - The {@link CapType} to coerce the word to.
     */
    coerce(word: string, cap: CapType): string;
}
/**
 * A special subclass of {@link Casing} for Turkic languages, which have
 * unique rules for lowercasing and uppercasing the characters `İ,I`, `i,ı`.
 */
export declare class TurkicCasing extends Casing {
    private replaceMapping;
    lower(word: string): string[];
    upper(word: string): string;
}
/**
 * A special subclass of {@link Casing} for German, which has a unique rule
 * where `"SS"` can be lowercased as both `"ss"` *and* `“ß”`.
 */
export declare class GermanCasing extends Casing {
    private sharpVariants;
    lower(word: string): string[];
    guess(word: string): CapType;
}