Localization without subpath or subdomain routing

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Goals

1. Pure Code and Dependency-Free: This solution aims to achieve localization without introducing external libraries. This approach maintains a lightweight codebase and avoids potential compatibility or dependency management issues.
2. Localization-Friendly: The proposed approach prioritizes modularity and flexibility for localization. By structuring your localization data in JSON files and using dynamic imports, you can easily add new languages and manage translations efficiently.
3. Ease of Integration: This solution strives for straightforward integration into Next.js components. The outlined steps guide you through defining your dictionary structure, organizing JSON files, and using getDictionary to fetch and access localized content within components.

Non-Goals

1.Third-party library dependency: This solution aims to avoid introducing external libraries to maintain a lightweight and dependency-free approach.
2. Advanced features: Complex routing configurations (subpath or subdomain-based) are not the focus here. This implementation targets basic localization within a single language path.
3. Server-side rendering (SSR) integration: While SSR is crucial for robust SEO and performance, this solution primarily focuses on client-side localization for simplicity.

Background

Localization can enhance your Next.js application's user experience by adapting content to different languages. While popular libraries offer convenience, they might add dependencies and overhead. This proposal explores a pure code approach for localization without subpath or subdomain routing.

Proposal

Define Dictionary Structure:

Create a Dictionary interface/type alias to structure your localization data.

Organize JSON Files:

Store content in separate JSON files for each language (e.g., en.json, ru.json).
Implement Dynamic Imports:

Use dynamic imports (import()) to fetch the appropriate JSON file based on the locale.
Integrate into Components:

Retrieve the desired locale (e.g., from user preference or browser language).
Use getDictionary to fetch the corresponding dictionary data.
Access the localized content from the fetched dictionary object within your components.

This proposal outlines a pure code approach for achieving localization within Next.js. By adhering to this structure and integrating it into your components, you can establish a solid foundation for supporting multiple languages without introducing external dependencies.