[i18n] 🌎 sync missing keys to other language

This will ease the process of contributing to i18n

scripts/front/add-missing-keys-to-other-languages.js

@@ -0,0 +1,60 @@
+'use strict';
+
+const { join, dirname } = require('path');
+const { promisify } = require('util');
+const fs = require('fs-extra');
+const glob = promisify(require('glob').glob);
+
+const addMissingKeyForSingleFile = async filePath => {
+  console.log('Start adding missing keys to', filePath);
+  try {
+    // Read translation file
+    const currentTranslationFileJSON = await fs.readJSON(filePath);
+    // Read en.json
+    const mainTranslationFile = join(dirname(filePath), 'en.json');
+    const mainTranslationFileJSON = await fs.readJSON(mainTranslationFile);
+    // Add missing keys from en.json to translation file
+    const updatedFile = Object.keys(mainTranslationFileJSON).reduce((acc, current) => {
+      if (currentTranslationFileJSON[current]) {
+        acc[current] = currentTranslationFileJSON[current];
+      } else {
+        acc[current] = mainTranslationFileJSON[current];
+      }
+
+      return acc;
+    }, {});
+    await fs.writeJson(filePath, updatedFile, { spaces: 2 });
+    console.log('Added missing keys to ', filePath);
+    return Promise.resolve();
+  } catch (err) {
+    return Promise.reject(err);
+  }
+};
+
+const addMissingKeys = async lang => {
+  // Get translation files
+  const corePackageDirs = await glob('packages/core/*');
+  const pluginsPackageDirs = await glob('packages/plugins/*');
+  const packageDirs = [...corePackageDirs, ...pluginsPackageDirs];
+  const pathToTranslationsFolder = ['admin', 'src', 'translations'];
+
+  const translationFiles = packageDirs
+    .filter(dir => {
+      return fs.existsSync(join(dir, ...pathToTranslationsFolder, `${lang}.json`));
+    })
+    .reduce((acc, dir) => {
+      return [...acc, join(dir, ...pathToTranslationsFolder, `${lang}.json`)];
+    }, []);
+  console.log('List of files to add missing keys', translationFiles, '\n');
+
+  // For each file run addMissingKeyForSingleFile
+  translationFiles.forEach(addMissingKeyForSingleFile);
+};
+
+if (process.argv.length < 3) {
+  console.log(
+    'Please provide a language.For examples:\nnode scripts/front/add-missing-keys-to-other-languages.js vi'
+  );
+  process.exit(1);
+}
+addMissingKeys(process.argv[2]).catch(err => console.error(err));