/**
 * Right-to-left support. `isRTL` is resolved once in `Chat` (from `forceRTL`, falling back to
 * whether `locale` is a right-to-left language) and exposed via `useIsRTL()`. Components mirror
 * their own layout with it - there is no global `I18nManager.forceRTL` call here, since that is
 * an app-wide, native-reload-requiring switch that would be wrong to flip from a single `Chat`
 * instance.
 */
/** Whether a BCP-47 tag (e.g. "ar-EG", "he") names a right-to-left language. */
export declare function isRTLLocale(locale: string | undefined): boolean;
/**
 * Flip a semantic `'left' | 'right'` position to the side it should actually render on. Only
 * ever apply this to *physical* layout (alignment, margins, corner radii) - never to a
 * `LeftRightStyle` override keyed by message ownership (own vs. other message), which stays
 * keyed by the original, unmirrored position so a consumer's "my messages are blue" style
 * keeps meaning "my messages" regardless of which side they render on.
 */
export declare function mirrorPosition<T extends 'left' | 'right' | undefined>(position: T, isRTL: boolean): T;
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