refactored translations to avoid breakage

scripts/i18n.js

@@ -0,0 +1,112 @@
+// 1. Takes file with messages extracted via the React Intl Babel plugin and converts it into a file containing
+// `id: message` pairs in "en" locale.
+//
+// 2. Takes all translations and groups them into a single file.
+const fs = require('fs');
+const path = require('path');
+const globSync = require('glob').sync;
+const mkdirpSync = require('mkdirp').sync;
+
+const EXTRACTED_STRINGS = './src/i18n/ex/base-en.json';
+const LANG_DIR         = './src/i18n/';
+const LANG_PATTERN     = './src/i18n/*.json';
+const FINAL_FILE       = './src/messages.json';
+
+const args = process.argv.slice(2);
+
+function getLocaleFromFileName(filename) {
+  const parts = filename.split('/');
+  return parts[parts.length - 1].split('.json')[0];
+}
+
+// Called with a parameter?
+if (args[0] == 'missing' || args[0] == 'obsolete') {
+  // Extract missing or obsolete translations as requested.
+  // Read all translations.
+  const extracted = globSync(LANG_PATTERN)
+    .map((filename) => {
+      const locale = getLocaleFromFileName(filename);
+      const translated = JSON.parse(fs.readFileSync(filename, 'utf8'));
+
+      const dest = {};
+      // Copy messages while skipping missing and obsolete ones.
+      for (let key in translated) {
+        if ((args[0] == 'missing' && translated[key].missing) ||
+          (args[0] == 'obsolete' && translated[key].obsolete)) {
+          dest[key] = translated[key];
+        }
+      }
+
+      return { [locale]: dest };
+    })
+    .reduce((collection, descriptors) => {
+      return { ...collection, ...descriptors };
+    }, {});
+
+  console.log(JSON.stringify(extracted, null, 2)+"\n");
+  return;
+}
+
+// The formatjs/cli saves extracted messages into a file {'message_id': {defaultMessage: 'default message text', description: '...'}, ...}.
+// Rewrite them into a single file en.json {'message_id': 'default message text', }.
+
+// Read master-set of messages in default language.
+const baseMessages = JSON.parse(fs.readFileSync(EXTRACTED_STRINGS, 'utf8'));
+
+// Find messages present in baseMessages but missing in translations and vice versa.
+// Mark missing or obsolete messages as such.
+globSync(LANG_PATTERN)
+  .map((filename) => {
+    const translated = JSON.parse(fs.readFileSync(filename, 'utf8'));
+
+    // Refresh existing entries with possible new descriptions and default messages, add missing.
+    Object.entries(baseMessages).forEach((ent) => {
+      const [key, value] = ent;
+      translated[key] = {
+        translation: translated[key] ? translated[key].translation : "",
+        defaultMessage: value.defaultMessage,
+        description: value.description,
+        missing: !translated[key],
+        obsolete: false
+      };
+    });
+
+    // Find no longer needed messages.
+    Object.entries(translated).forEach((ent) => {
+      const [key, value] = ent;
+      if (!baseMessages[key] && translated[key]) {
+        // Obsolete, no longer missing.
+        translated[key].missing = false;
+        translated[key].obsolete = true;
+      }
+    });
+
+    fs.writeFileSync(filename, JSON.stringify(translated, null, 2)+"\n");
+  });
+
+// Combine all translations into a single json {"lang_1": {...}, "lang_2: {...}"}
+// while removing messages marked as missing or obsolete.
+
+// Read all translations.
+const messages = globSync(LANG_PATTERN)
+  .map((filename) => {
+    const locale = getLocaleFromFileName(filename);
+    const translated = JSON.parse(fs.readFileSync(filename, 'utf8'));
+
+    const dest = {};
+    // Copy messages while skipping missing and obsolete ones.
+    for (let key in translated) {
+      if (!translated[key].missing && !translated[key].obsolete) {
+        dest[key] = translated[key].translation;
+      }
+    }
+
+    return { [locale]: dest };
+  })
+  .reduce((collection, descriptors) => {
+    return { ...collection, ...descriptors };
+  }, {});
+
+// Write a file with all translations combined.
+mkdirpSync(path.dirname(FINAL_FILE));
+fs.writeFileSync(FINAL_FILE, JSON.stringify(messages));