interface LocaleApiContent {
    /** IETF-formatted locale at time of page load */
    initialValue: string;
    /** Callback when user changes locale during runtime */
    setOnChange(onChange: (locale: string) => void): void;
}
/**
 * Access the merchant’s current locale (in [IETF format](https://en.wikipedia.org/wiki/IETF_language_tag)) to internationalize your extension content.
 */
export interface LocaleApi {
    locale: LocaleApiContent;
}
export declare function isLocaleApi(api: any): api is LocaleApi;
export {};
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