i18n-boost

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VS Code extension designed to streamline the i18n workflow for developers.

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<div align="center"> <img width="36" height="36" alt="image"  src="https://raw.githubusercontent.com/mrgwd/i18n-boost/main/src/images/icon.webp" /> <h1> I18n Boost</h1> </div>

Supercharge your internationalization (i18n) workflow. Integrates directly into your editor to help you **navigate, manage, and use translation keys faster**.

</div>

</p>

## Supported Frameworks

<p opacity="0.5">Works with React, Vue, Svelte, Next.js, i18next, vue-i18n, next-intl and more.</p>

</div>

## Features

### 1. **Autocomplete for `t("...")`**

Get real-time suggestions for translation keys while typing inside your translation function calls.

![autocomplete](https://raw.githubusercontent.com/mrgwd/i18n-boost/main/assets/autocomplete.gif)

**How it works:**

- Start typing `t("` or `t('` in a `.jsx`, `.tsx`, `.vue`, or supported file
- i18n-boost will list all available keys from your locale files
- Suggestions filter automatically as you type

---

### 2. **Easy Switch**

When hovering over a translation key in your code, you will see a list of available locales.

![autocomplete](https://raw.githubusercontent.com/mrgwd/i18n-boost/main/assets/easy-switch.gif)

**How it works:**

- Hover over a translation key in your code
- Click on the locale you want to switch to

---

### 3. **Ctrl+Click to Jump to Locale**

Navigate directly from a translation key in your code to its definition in your locale file.

![ctrl-click](https://raw.githubusercontent.com/mrgwd/i18n-boost/main/assets/ctrl-click.gif)

**How it works:**

- Hold `Ctrl` (or `Cmd` on Mac) and click a key in `t('...')`
- The editor opens your **default locale file** at the correct line

---

### 4. **Unused Translation Keys Warnings**

Scans your codebase to find translation keys that are defined but never used. Just like the `no-unused-vars` rule in ESLint, but for i18n keys!

![unused-keys](https://raw.githubusercontent.com/mrgwd/i18n-boost/main/assets/unused-keys.gif)

**How it works:**

- Open your locale file (e.g., `en.json`).
- Unused keys are automatically highlighted.
- In-sync with your code, updating as you edit.

---

### 5. **Copy Full Translation Key**

Effortlessly copy the full nested key path of any translation value in your locale file.

![copy-key-path](https://raw.githubusercontent.com/mrgwd/i18n-boost/main/assets/copy-key-path.gif)

**How it works:**

- Open your locale file (e.g., `en.json`)
- Right-click on a value
- Select **"Copy Full Translation Key"** — done!

## ⚙️ Configuration

### ✨ Zero Config (Auto-Discovery)

I18n Boost automatically detects your locale files and structure in most common setups.
If you follow standard conventions (e.g., `src/locales`, `src/i18n`, or `public/locales`), **you likely don't need to configure anything.**

### Settings

- **Workspace Settings**: `.vscode/settings.json` (project-specific)
- **Settings UI**: `Ctrl+,` → Search for "I18n Boost"
- **User Settings**: Global settings for all projects

### Custom Configuration

| Setting                       | Description                                                   | Default Value |
| ----------------------------- | ------------------------------------------------------------- | ------------- |
| `i18nBoost.localesPath`       | Path to translation files folder (relative to workspace root) | `"src/i18n"`  |
| `i18nBoost.fileNamingPattern` | Pattern for locale file naming                                | `"auto"`      |
| `i18nBoost.keyStrategy`       | How translation keys are constructed (see below)              | `"filename"`  |
| `i18nBoost.functionNames`     | Function names that trigger autocomplete (e.g., `t`, `$t`)    | `["t", ...]`  |
| `i18nBoost.defaultLocale`     | Default locale to navigate to on Ctrl+Click                   | `"en"`        |
| `i18nBoost.enabled`           | Enable/disable extension features                             | `true`        |

### 📂 File Naming Patterns

Define how your translation files are organized within the `localesPath`:

- **`"auto"`**: Automatically detects the pattern based on your files.
- **`"locale.json"`**: Each locale is a single JSON file.
  - _Example_: `en.json`, `ar.json`, `es.json`
- **`"locale/**/\*.json"`\*\*: Each locale is a directory containing multiple JSON files.
  - _Example_: `en/common.json`, `en/auth/login.json`

### 🔑 Understanding `keyStrategy`

This setting determines how the extension reads your translation keys. Choose the one that matches your i18n library usage:

- **`filename` (Default)**: The file name acts as a namespace.
  - _Structure_: `locales/en/auth.json` containing key `login`.
  - _Usage_: `t("auth.login")`
  - _Best for_: Projects that split translations into multiple files (namespaces).

- **`flat`**: File paths are ignored; keys are read directly from the JSON structure.
  - _Structure_: `locales/en.json` containing nested object `auth: { login: ... }`.
  - _Usage_: `t("auth.login")`
  - _Best for_: Projects using a single large translation file or libraries that merge all files.

## 🏢 Monorepo & Multi-Root Support

I18n Boost fully supports monorepos and multi-root setups through **Group-based Isolation**.

Example of `i18nBoost.localesPath` with an array of globs:

```json
{
  "i18nBoost.localesPath": [
    "apps/first-app/src/locales",
    "packages/**/locales"
    ]
}
```

Intelligently resolves relevant locales based on the file you are currently editing. Apps will see their own specific locales as well as shared locales, but remain completely isolated from sibling apps. Autocomplete, Hover, Navigation, and Unused Keys detection all natively support this structure.

### Example Configuration

**`.vscode/settings.json`** (workspace-specific):

```json
{
  "i18nBoost.localesPath": "./src/locales",
  "i18nBoost.defaultLocale": "en",
  "i18nBoost.functionNames": [
    "t",
    "translate",
    "$t",
    "i18n.t",
    "t.raw",
    "t.rich"
  ],
  "i18nBoost.fileNamingPattern": "auto",
  "i18nBoost.keyStrategy": "filename",
  "i18nBoost.enabled": true
}
```

## 🛠 Installation

### From VS Code Marketplace

1. Open **Extensions** in VS Code (`Ctrl+Shift+X`)
2. Search for `I18n Boost`
3. Click **Install**

### From VSIX File

1. Download the latest `.vsix` file from [Releases](https://github.com/mrgwd/i18n-boost/releases)
2. Open VS Code
3. Go to **Extensions** → **...** → **Install from VSIX**
4. Select the downloaded `.vsix` file

### From Source (Development)

1. Clone this repository:

```bash
   git clone https://github.com/mrgwd/i18n-boost.git
   cd i18n-boost
   ```

2. Install dependencies:

```bash
   npm install
   ```

3. Compile:

```bash
   npm run compile
   ```

4. Press `F5` in VS Code to launch the extension in a new Extension Development Host window.

## 🔧 Quick Setup

1. **Install the extension** from the VS Code Marketplace
2. **Configure your settings** via VS Code Settings (`Ctrl+,`) or `.vscode/settings.json`
3. **Start using** autocomplete and navigation features immediately!

The extension will automatically discover your locale files based on your configuration.

## 🐛 Troubleshooting

<details>
  <summary><b>Extension not working?</b></summary>

1.  **Check your settings**: Ensure I18n Boost is enabled in VS Code settings
2.  **Verify file paths**: Make sure `i18nBoost.localesPath` points to your translation files
3.  **Check file naming**: Ensure your locale files match the `i18nBoost.fileNamingPattern` setting
4.  **Restart VS Code**: Sometimes a restart is needed after configuration changes
</details>

<details>
  <summary><b>Autocomplete not showing?</b></summary>

1.  **Verify function names**: Check that your translation function names are in the `i18nBoost.functionNames` array
2.  **Check file types**: Ensure you're working in supported file types (`.js`, `.ts`, `.jsx`, `.tsx`, `.vue`, `.svelte`)
3.  **Trigger manually**: Try typing `t("` and then `Ctrl+Space` to trigger suggestions
</details>

<details>
  <summary><b>Navigation not working?</b></summary>

1.  **Check default locale**: Ensure your `i18nBoost.defaultLocale` file exists
2.  **Verify key exists**: Make sure the translation key exists in your default locale file
3.  **Check function names**: Ensure the function name matches your configuration
</details>

<details>
  <summary><b>Unused keys not detected?</b></summary>

1.  **Wait for scan**: The extension scans your codebase when files are saved
2.  **Check file patterns**: Ensure your code files match the supported patterns
3.  **Verify function names**: Make sure your translation function calls use the configured function names
</details>

<details>
 <summary><b>Key exists but not suggested?</b></summary>

- Check your `keyStrategy` setting
- Ensure the key exists in the default locale
- Restart VS Code after changing configuration
</details>

## 🗂 Project Structure

```
i18n-boost/
│
├── package.json               # Extension metadata & activation
├── tsconfig.json              # TypeScript configuration
├── README.md                  # This file
├── CHANGELOG.md               # Release notes
├── src/
│   ├── extension.ts           # Entry point
│   ├── commands/              # Command implementations
│   ├── providers/             # Hover, completion, definition providers
│   ├── types/                 # Type definitions
│   ├── utils/                 # Utility functions
│   └── images/                # Icons and images
└── tests/                     # Unit tests
```

## 🤝 Contributing

PRs are welcome!
Please check the [Contributing Guide](CONTRIBUTING.md) for details.

## 🔒 Privacy Policy

**I18n Boost respects your privacy:**

- **No data collection**: The extension does not collect, store, or transmit any personal data
- **Local processing only**: All translation key analysis happens locally in your VS Code instance
- **No telemetry**: No usage statistics or analytics are collected
- **Open source**: The entire codebase is open source and auditable

The extension only reads your project files to provide i18n functionality and does not communicate with external servers.

## 📜 License

This project is licensed under the MIT License — see the [LICENSE](LICENSE) file for details.

## Why I built this extension?

Read the [backstory blog post](https://mohamedramadan.dev/en/blog/i18n-boost) — it's a ~6-min read.

## 📫 Contact

You can reach out via [email](mogdwd@gmail.com) or [Twitter](https://twitter.com/_muhammedr).

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