Question 1

How to use Polyglot.js with React?

Accepted Answer

Polyglot.js can be integrated into React by instantiating it in a component or context provider and managing state updates manually. Since it's framework-agnostic, you'll need to handle re-renders and locale changes, unlike libraries like react-i18next that offer hooks and context out of the box.

Question 2

Polyglot.js vs i18next: which is better for my project?

Accepted Answer

Polyglot.js is lighter and simpler, ideal for basic interpolation and pluralization in smaller apps or custom setups. i18next has more features like plugins, middleware, and framework integrations, but is heavier. Choose based on whether you need minimalism or a full-featured solution.

Question 3

How to handle nested translation keys in Polyglot.js?

Accepted Answer

Use dot notation for nested keys, as shown in the README with examples like 'nav.sidebar.welcome'. This allows organized phrase structures for large projects, making key management more scalable and readable.

Question 4

Does Polyglot.js support dynamic loading of translation files?

Accepted Answer

No, Polyglot.js doesn't handle file loading; you need to fetch phrases externally (e.g., via API calls) and then use extend() or replace() methods to update the instance dynamically. This requires additional code for asynchronous updates.

Question 5

How to set up custom pluralization rules for a new language?

Accepted Answer

Define custom rules using the pluralRules option during instantiation, specifying pluralTypes functions and pluralTypeToLanguages mappings, as detailed in the README. This is necessary for locales not supported by default, adding setup complexity.

Question 6

Can Polyglot.js be used with server-side rendering in Next.js?

Accepted Answer

Yes, since it works in Node.js, you can instantiate Polyglot on the server and pass phrases to the client via props or global state. However, managing locale detection, hydration, and phrase synchronization requires manual implementation without built-in helpers.

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