next-intl/dist/types/plugin/types.d.ts

Internationalization (i18n) for Next.js

export type PluginConfig = {
    requestConfig?: string;
    experimental?: {
        /** A path to the messages file that you'd like to create a declaration for. In case you want to consider multiple files, you can pass an array of paths. */
        createMessagesDeclaration?: string | Array<string>;
    };
};