import { type Locale } from './locale.ts';
/**
 * Whitespace surrounding a sentence. `undefined` means there is no sentence
 * boundary on that side (the document or content run starts/ends there); an
 * empty string marks a boundary whose separator has zero width (e.g. between
 * two Japanese sentences).
 */
export type Affixes = {
    prefix?: string;
    suffix?: string;
};
/**
 * Adjusts the affixes surrounding a sentence.
 *
 * Rules:
 * - The target does not use whitespace between sentences:
 *    spacing separators and the literal   are removed. A separator that
 *    becomes empty is kept as `''` — the zero-width boundary marker.
 * - The source does not use whitespace between sentences but the target
 *   does: ideographic spaces (U+3000) become regular spaces, one for one,
 *   and a `''` boundary marker materializes as a regular space.
 *
 * @param sourceLocale - Locale the sentence was translated from.
 * @param targetLocale - Locale the sentence was translated into.
 * @param affixes - The affixes captured around the source sentence.
 * @returns The affixes adapted to the target language.
 * @throws Error when either locale is not supported.
 */
export declare const adjustSentenceAffixes: (sourceLocale: Locale, targetLocale: Locale, affixes: Affixes) => Affixes;