JupyterLab localization example

This standalone application shows how to localize an interface built with JupyterLab packages. Localization is kept in its own example because applications using JupyterLab components are not required to provide translations.

The browser asks the example server for its available languages, loads the selected catalog with TranslationManager, and renders strings from the jupyterlab_localization_example domain. English uses the source strings in src/index.ts; the Spanish catalog is stored in locale/es/LC_MESSAGES/jupyterlab_localization_example.json.

From the repository root, build and run the example with:

bash

jlpm
jlpm workspace @jupyterlab/example-localization build
python examples/localization/main.py

The interface demonstrates a simple translation, interpolation, and plural forms. It does not reproduce JupyterLab's settings-backed language menu or require an installed language pack.

To add another language, add it to LANGUAGES and CATALOGS in main.py, provide a JSON catalog under locale/<locale>/LC_MESSAGES/, and extend the browser test to exercise it. Keep source keys and placeholders identical to those in src/index.ts.

For production extension packaging and translation extraction, see the internationalization documentation.