export interface LocalePickResult {
    /**
     * The actual locale (e.g. en-US) for number and date formatting etc.
     */
    locale: string;
    /**
     * The locale identifier to load messages for. E.g. "en".
     */
    messageLocale: string;
}
/**
 * Picks a locale for the app.
 */
export declare class I18nConfig {
    private appLocales;
    /**
     * @param appLocales Locales the app has i18n messages for (e.g. "en", "de")
     */
    constructor(appLocales: string[]);
    /**
     * @param forcedLocale Optional forced locale (must be satisfied)
     * @param userLocales Locales requested by the user's browser
     */
    pickSupportedLocale(forcedLocale: string | undefined, userLocales: string[]): LocalePickResult;
    supportsLocale(locale: string): boolean;
    private pickImpl;
}
/**
 * Returns locales supported by the browser, in order of preference (preferred first).
 *
 * See also https://developer.mozilla.org/en-US/docs/Web/API/Navigator/languages
 */
export declare function getBrowserLocales(): string[];