/**
 * @copyright Sister Software
 * @license AGPL-3.0
 * @author Teffen Ellis, et al.
 */
import type { TextNormalizer } from "../tokenization/normalizer.ts";
import type { Displayable } from "./debugging.ts";
/**
 * Options for the locale index.
 */
export interface LocaleIndexOptions {
    displayName: string;
    normalizer?: TextNormalizer;
}
/**
 * Index mapping a specific value to originating languages.
 *
 * If a value is present in this index, it means that the value is a valid value in at least one language.
 */
export declare class LocaleIndex<LanguageCodes extends string> extends Map<string, Set<LanguageCodes>> {
    /**
     * The normalizer to use for placenames.
     */
    readonly normalizer?: TextNormalizer;
    /**
     * The source of the index.
     */
    displayName: string;
    constructor(entries: Iterable<readonly [string, Iterable<LanguageCodes>]> | undefined, options: LocaleIndexOptions);
    /**
     * Add a placename to the index, associating it with the given language codes.
     *
     * @param placename The placename to add.
     * @param languageCodes The language codes to associate with the placename.
     */
    add(placename: string, ...languageCodes: LanguageCodes[]): void;
    /**
     * Remove a placename from the index.
     *
     * @param placename The placename to remove.
     */
    remove(placename: string): void;
    open(placename: string): Displayable<Set<LanguageCodes>>;
    /**
     * Get the language codes associated with a placename.
     */
    get: (placename: string) => Displayable<Set<LanguageCodes>> | undefined;
    /**
     * Serialize the index to JSON.
     */
    toJSON(): [string, LanguageCodes[]][];
}
//# sourceMappingURL=LocaleIndex.d.ts.map