removed a print lining statement and added a comment

packages/minifier-js/minifier.js

@@ -39,7 +39,7 @@ meteorJsMinify = function (source) {
     });
 
     const babelResult = Babel.minify(source, babelOptions);
-    console.log(babelResult);
+    
     if (typeof babelResult.code === "string") {
       result.code = babelResult.code;
       result.minifier = 'babel-minify';  

packages/standard-minifier-js/plugin/minify-js.js

@@ -28,6 +28,7 @@ class MeteorBabelMinifier {
     // this function tries its best to locate the original source file
     // that the error being reported was located inside of
     function maybeThrowMinifyErrorBySourceFile(error, file) {
+      // this regex matches error messages like "Unexpected token (1:12)"
       const minifierErrorRegex = /^(.*?)\s?\((\d+):(\d+)\)$/;
       const parseError = minifierErrorRegex.exec(error.message);