export declare const SUPPORTED_LOCALES: readonly ["en-US", "es-ES", "fr-FR", "de-DE", "pt-BR", "zh-CN", "zh-TW", "ja-JP", "ko-KR", "hi-IN", "ar-SA"];
export type BuiltinLocaleCode = (typeof SUPPORTED_LOCALES)[number];
export type LocaleCode = string & {};
export type LocalePreference = "system" | LocaleCode;
export interface LocaleMetadata {
    code: LocaleCode;
    englishName: string;
    nativeName: string;
    dir: "ltr" | "rtl";
}
export type LocaleMetadataMap = Readonly<Record<string, LocaleMetadata>>;
export interface LocalizationPreference {
    locale: LocalePreference;
    timezone?: TimezonePreference;
}
export type ResolvedLocalizationPreference = Required<LocalizationPreference>;
export type TimezonePreference = "system" | (string & {});
export declare const DEFAULT_LOCALE: BuiltinLocaleCode;
export declare const LOCALIZATION_SETTING_KEY = "localization";
export declare const LOCALE_STORAGE_KEY = "agent-native:locale-preference";
export declare const LOCALE_HYDRATION_GLOBAL = "__AGENT_NATIVE_LOCALE__";
export declare const LOCALE_METADATA: Record<BuiltinLocaleCode, LocaleMetadata>;
export declare function localeMetadataFor(locale: LocaleCode, metadata?: LocaleMetadataMap): LocaleMetadata;
export declare function localeDisplayName(locale: LocaleCode, metadata?: LocaleMetadataMap): string;
export declare function isLocaleCode(value: unknown): value is BuiltinLocaleCode;
export declare function isValidLocaleCode(value: unknown): value is LocaleCode;
export declare function normalizeLocaleCode(value: unknown, supportedLocales?: readonly LocaleCode[]): LocaleCode | null;
export declare function normalizeLocalePreference(value: unknown, supportedLocales?: readonly LocaleCode[]): LocalePreference | null;
export declare function normalizeTimezonePreference(value: unknown): TimezonePreference;
export declare function normalizeLocalizationPreference(value: unknown, supportedLocales?: readonly LocaleCode[]): ResolvedLocalizationPreference;
export declare function localeDirection(locale: LocaleCode, metadata?: LocaleMetadataMap): "ltr" | "rtl";
export declare function resolveLocaleFromCandidates(candidates: Iterable<unknown>, supportedLocales?: readonly LocaleCode[]): LocaleCode;
export declare function resolveLocaleFromPreference(preference: unknown, systemCandidates?: Iterable<unknown>, supportedLocales?: readonly LocaleCode[]): LocaleCode;