Intlayer is a JavaScript internationalization (i18n) solution designed for scalable, multilingual applications. It targets developers building with modern JavaScript frameworks like React, Next.js, and Vite, offering a flexible, type-safe, and component-centric approach to managing translations.

How It Works

Intlayer emphasizes a "per-locale content declaration" strategy, allowing developers to define translations close to their components, typically in the same folder. This promotes code organization and maintainability. It leverages TypeScript for type safety and IDE autocompletion. A key differentiator is its ability to retrieve all content for a given locale with a single hook, simplifying content access compared to traditional per-key translation functions. It also supports Markdown for content like policies and documentation, making metadata accessible within code.

Quick Start & Requirements

• Installation: npm install intlayer or yarn add intlayer
• Prerequisites: Node.js, npm/yarn. TypeScript is highly recommended for type safety.
• Documentation: https://intlayer.com/docs
• Demos: https://intlayer.com/docs/examples

Highlighted Details

• Cross-Framework Support: Compatible with Next.js, React, Vite, Vue.js, Nuxt, Express, and more.
• Type-Safe: Full TypeScript integration for error prevention and autocompletion.
• Component-Centric: Translations co-located with components for better organization.
• AI-Powered Translation: One-click translation to 231 languages using user-provided API keys.
• Visual Editor & CMS: Free tools for content writers, with Git synchronization or externalization options.
• Tree-Shakable Content: Loads content per component, reducing bundle size and supporting lazy loading.
• Interoperability: Works with react-i18next, next-i18next, and next-intl.

Maintenance & Community

• VSCode Extension: Available for enhanced content management and translation workflows.
• MCP Server: Provides IDE automation for content management.
• Contribution Guidelines: Detailed in CONTRIBUTING.md.

Licensing & Compatibility

• License: Not explicitly stated in the provided README. Compatibility for commercial use or closed-source linking is therefore unclear.

Limitations & Caveats

The licensing is not specified, which may pose a risk for commercial adoption. The README mentions interoperability with other i18n libraries, but the extent and potential conflicts are not detailed.