import { type TOptions } from 'i18next';
export type SupportedLanguage = 'en' | 'fr';
export declare function normalizeLanguage(value: string | null | undefined): SupportedLanguage;
export declare function setLanguage(language: SupportedLanguage): Promise<void>;
export declare function currentLanguage(): SupportedLanguage;
export declare function translate(key: string, options?: TOptions): string;
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