Provide more helpful errors when i18n generation fails

Also fix TextForEvent.js so it doesn't break the script. Using a variable here is not recognized, so the object has been moved inline instead.

scripts/gen-i18n.js

@@ -158,6 +158,7 @@ function getTranslationsJs(file) {
                     } catch (e) {
                         console.log();
                         console.error(`ERROR: ${file}:${node.loc.start.line} ${tKey}`);
+                        console.error(e);
                         process.exit(1);
                     }
                 }

src/TextForEvent.js

@@ -228,14 +228,12 @@ function textForRoomAliasesEvent(ev) {
             removedAddresses: removedAliases.join(', '),
         });
     } else {
-        const args = {
+        return _t(
+            '%(senderName)s added %(addedAddresses)s and removed %(removedAddresses)s as addresses for this room.', {
                 senderName: senderName,
                 addedAddresses: addedAliases.join(', '),
                 removedAddresses: removedAliases.join(', '),
-        };
+            },
-        return _t(
-            '%(senderName)s added %(addedAddresses)s and removed %(removedAddresses)s as addresses for this room.',
-            args,
         );
     }
 }