/**
 * Lightweight locale registry for modern-app chrome strings.
 *
 * Scope: library-internal chrome strings only (empty-state copy, back label).
 * NOT a general i18n framework — the app's own content is the app's business.
 *
 * ★**English is the built-in default.** This package sits in the *generic* layer
 * (see the three-layer split: `components` = neutral primitives, `modern-app` =
 * what a modern app usually provides, `enterprise` = iyulab house style).
 * A generic layer that ships Korean defaults excludes every non-Korean consumer —
 * the same objection this repo raised against baking a house aesthetic into
 * `components`. Language excludes harder than aesthetics: an odd-looking default
 * is awkward, an unreadable one is unusable.
 *
 * Mirrors the registry already established in `u-widgets` — one pattern, not two.
 *
 *   registerLocale('ko', { back: '뒤로', noDataTitle: '아직 등록된 항목이 없습니다' });
 *   setDefaultLocale('ko');
 */
export interface ModernAppLocaleStrings {
    /** Back button label in the page header. */
    back: string;
    /** Empty state — nothing exists yet. */
    noDataTitle: string;
    noDataDescription: string;
    /** Empty state — records exist but the current query matched none. */
    noResultsTitle: string;
    noResultsDescription: string;
    /** Master-detail layout — accessible label for the overlay-mode close button. */
    detailClose: string;
    /** Sidebar layout — accessible label for the mobile-header menu toggle button. */
    toggleMobileMenu: string;
    /** Sidebar layout — accessible label for the sidebar-header collapse/expand toggle button. */
    toggleSidebar: string;
    /** Wizard — default Back/Next action labels ("Submit" wording is the consumer's call). */
    wizardBack: string;
    wizardNext: string;
    /** Wizard — live-region announcement read out on every step change. */
    wizardStepAnnouncement: (index: number, total: number, label: string) => string;
}
/**
 * Register a locale. Partial overrides are merged with the English defaults,
 * so a consumer can translate one string without restating the rest.
 */
export declare function registerLocale(lang: string, strings: Partial<ModernAppLocaleStrings>): void;
/** Set the locale used when a component does not specify one. */
export declare function setDefaultLocale(lang: string | undefined): void;
/**
 * Resolve strings for a language tag.
 *
 * Order: exact match (`ko-KR`) → base language (`ko`) → English.
 * ⚠The base-language step matters: consumers register `ko` but browsers report
 * `ko-KR`, and without it every registration would silently miss.
 */
export declare function getLocaleStrings(lang?: string): ModernAppLocaleStrings;
/** The English defaults — for tests and reference. */
export declare function getDefaultLocale(): ModernAppLocaleStrings;