add script to compare language files

src/Umbraco.Web.UI.Client/devops/localization/compare-languages.js

@@ -0,0 +1,66 @@
+/**
+ * This script is used to compare the keys in the localization files. It will take a main language (en.js) and compare with the other languages.
+ * The script will output the keys that are missing in the other languages and the keys that are missing in the main language.
+ *
+ * Note: Since the source files are TypeScript files, the script will only compare on the dist-cms files.
+ *
+ * Usage: node devops/localization/compare-languages.js [filter]
+ * Example: node devops/localization/compare-languages.js da-dk.js
+ *
+ * Copyright (c) 2024 by Umbraco HQ
+ */
+
+import fs from 'fs';
+import path from 'path';
+
+const mainLanguage = 'en.js';
+const __dirname = import.meta.dirname;
+const languageFolder = path.join(__dirname, '../../dist-cms/assets/lang');
+
+// Check that the languageFolder exists
+if (!fs.existsSync(languageFolder)) {
+	console.error(`The language folder does not exist: ${languageFolder}. You need to build the project first by running 'npm run build'`);
+	process.exit(1);
+}
+
+const mainKeys = (await import(path.join(languageFolder, mainLanguage))).default;
+const mainMap = buildMap(mainKeys);
+
+const filter = process.argv[2];
+if (filter) {
+	console.log(`Filtering on: ${filter}`);
+}
+
+const languages = fs.readdirSync(languageFolder).filter((file) => file !== mainLanguage && file.endsWith('.js') && (!filter || file.includes(filter)));
+const missingKeysInMain = [];
+
+const languagePromise = Promise.all(languages.map(async (language) => {
+	const languageKeys = (await import(path.join(languageFolder, language))).default;
+	const languageMap = buildMap(languageKeys);
+
+	const missingKeys = Array.from(mainMap.keys()).filter((key) => !languageMap.has(key));
+	let localMissingKeysInMain = Array.from(languageMap.keys()).filter((key) => !mainMap.has(key));
+	localMissingKeysInMain = localMissingKeysInMain.map((key) => `${key} (${language})`);
+	missingKeysInMain.push(...localMissingKeysInMain);
+
+	console.log(`\n${language}:`);
+	console.log(`Missing keys in ${language}:`);
+	console.log(missingKeys);
+}));
+
+await languagePromise;
+
+console.log(`Missing keys in ${mainLanguage}:`);
+console.log(missingKeysInMain);
+
+function buildMap(keys) {
+	const map = new Map();
+
+	for (const key in keys) {
+		for (const subKey in keys[key]) {
+			map.set(`${key}_${subKey}`, keys[key][subKey]);
+		}
+	}
+
+	return map;
+}