i18n-node is a translation module for Node.js and Express.js applications that manages localized strings using JSON storage.
The tool solves the problem of adding multi-language support to Node.js applications without complex parsing or setup overhead. It uses the familiar __('...') syntax for translation calls throughout application code and templates. New translation strings are automatically detected and added to JSON language files the first time they are used, eliminating the need to manually maintain translation catalogs. Language files follow a format compatible with webtranslateit, and the module automatically detects the user's preferred language from the Accept-Language header, falling back to a configured default locale.
The project suits developers building Node.js or Express applications who need straightforward internationalization without heavyweight dependencies. It works with any framework that exposes an app.use() method and passes request and response objects. The tool offers two usage patterns: instances for applications requiring multiple independent configurations with encapsulated state, and singletons for simpler setups where configuration and state can be shared globally across modules. Instance-based usage is recommended as the better practice for complex applications, while singleton usage remains available for CLI scripts and simpler projects where shared global state is acceptable.
The project maintains active test coverage tracking and vulnerability monitoring. Development activity includes regular dependency updates and security scanning through established tools.
