added exit code 1 if errors appear

tools/check-api.js

@@ -116,4 +116,7 @@ new Localizations()
 
 if (errorSum === 0) {
   console.log('Good job! Anything up to date!')
+  process.exit(0)
 }
+
+process.exit(1)

tools/check-locale.js

@@ -62,5 +62,8 @@ fs.readdir(`${DIR}`, (err, files) => {
 
   if (errorSum === 0) {
     console.log('Good job! Anything up to date!')
+    process.exit(0)
   }
+
+  process.exit(1)
 })