export type WidgetLocale = 'en' | 'ko' | 'ru' | 'fr' | 'ar' | 'pt' | 'es';
/** Right-to-left locales (Arabic) — the widget root sets dir accordingly. */
export declare function isRTL(locale: WidgetLocale): boolean;
/** The auto-localized string set (everything except the two special keys above). */
export interface WidgetStrings {
    placeholder: string;
    offline: string;
    online: string;
    away: string;
    aiAssistant: string;
    resolved: string;
    reopen: string;
    sources: string;
    helpful: string;
    notHelpful: string;
    translate: string;
    original: string;
    showOriginal: string;
    translateUnavailable: string;
    title: string;
    newChat: string;
    startChat: string;
    all: string;
    empty: string;
    error: string;
    retry: string;
    search: string;
    unread: string;
    close: string;
    back: string;
    sendMessage: string;
    dismiss: string;
    openChat: string;
    closeChat: string;
    conversation: string;
    typing: string;
}
/** Host overrides: any built-in string, plus the two special override-only keys. */
export type WidgetI18nOverrides = Partial<WidgetStrings> & {
    poweredBy?: string;
    send?: string;
};
/** Resolve a supported locale from an explicit option or the browser. Supports
 *  en/ko/ru/fr/ar/pt/es; anything else resolves to English. Accepts full BCP-47
 *  tags ('ko-KR'), bare codes ('ko'), or language names ('korean'/'français'). */
export declare function resolveLocale(explicit?: string): WidgetLocale;
/** The full string set for the resolved locale, with host per-key overrides
 *  applied on top (overrides win; blank/undefined override values are ignored so
 *  a partial override object never blanks a built-in string). The result may
 *  also carry `poweredBy`/`send` when the host provided them. */
export declare function resolveStrings(locale?: string, overrides?: WidgetI18nOverrides): WidgetStrings & {
    poweredBy?: string;
    send?: string;
};