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eslint-plugin-i18n-guard

v1.0.2

Published

ESLint plugin designed to help ensure that every key in your JSON i18n translation files has a corresponding translation. This can help avoid missing translations and ensure consistency across languages.

Downloads

9

Readme

eslint-plugin-i18n-guard

ESLint plugin designed to help ensure that every key in your JSON i18n translation files has a corresponding translation. This can help avoid missing translations and ensure consistency across languages.

Installation

npm install eslint-plugin-i18n-guard --save-dev
pnpm install eslint-plugin-i18n-guard --save-dev
yarn add eslint eslint-plugin-i18n-guard --dev

Usage

In your ESLint configuration (.eslintrc.json, .eslintrc.js), add the plugin and configure the rules:

import i18nGuard from "eslint-plugin-i18n-guard";

const i18nOptions = {
    "directories": ["src/translations"],
    "entryPoint": "src/App.tsx"
}
export default eslint.config(
    //.....

    plugins: {
      "i18n-guard": i18nGuard,
    },
    rules: {
        "i18n-guard/i18n-no-missing-keys": [
            "error",
            i18nOptions
        ],
        "i18n-guard/i18n-consistent-json": [
            "warn",
            i18nOptions
        ]
    }
)

Rules

i18n-no-missing-keys

This rule ensures that all translation files have the same keys. If any key is missing in one or more files, an error will be reported.

This will prevent not translated texts across our application.

Example

// translations/en.json
{
  "welcome": "Welcome",
  "logout": "Log out"
}

// translations/fr.json
{
  "welcome": "Bienvenue"
}
"logout" is missing in file: translations/fr.json

i18n-consistent-json-files.js

This rule checks that the order of the keys is the same across all translation files. It warns if the key order is inconsistent.

Example

// translations/en.json
{
  "welcome": "Welcome",
  "logout": "Log out"
}

// translations/fr.json
{
  "logout": "Se déconnecter",
  "welcome": "Bienvenue"
}
"welcome" is not consistent in files: translations/en.json, translations/fr.json

Options

Both rules accept the following options:

  • directories: An array of directory paths containing the i18n JSON files that should be checked for consistency.
  • entryPoint: The entry point file of your application (e.g., main.tsx, App.tsx). The ESLint error or warning messages will appear in this file.