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27 lines
1.5 KiB
Markdown
27 lines
1.5 KiB
Markdown
# MetaMask Translation Guide
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The MetaMask browser extension supports new translations added in the form of new locales files added in `app/_locales`.
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- [The MDN Guide to Internationalizing Extensions](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Internationalization)
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## Adding a new Language
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Each supported language is represented by a folder in `app/_locales` whose name is that language's subtag ([look up a language subtag using this tool](https://r12a.github.io/app-subtags/)).
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Inside that folder there should be a `messages.json` file that follows the specified format. An easy way to start your translation is to first duplicate `app/_locales/en/messages.json` (the english translation), and then update the `message` key for each in-app message.
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That's it! When MetaMask is loaded on a computer with that language set as the system language, they will see your translation instead of the default one.
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## Testing
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To automatically see if you are missing any phrases to translate, we have a script you can run (if you know how to use the command line). The script is:
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```
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node development/verify-locale-strings.js $YOUR_LOCALE
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```
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Where `$YOUR_LOCALE` is your [locale string](https://r12a.github.io/app-subtags/), i.e. the name of your language folder.
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To verify that your translation works in the app, you will need to [build a local copy](https://github.com/MetaMask/metamask-extension#building-locally) of MetaMask. You will need to change your browser language, your operating system language, and restart your browser (sorry it's so much work!).
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