Having a constructor with empty arguments in the last line will cause concatenation problems.

[flixx]

UglifyJS also strips the parenthesis of an constructor with empty arguments.

Chrome cannot parse the minified file if:

• there is a constructor with empty arguments is the last command in a js file and
• the next file to concatenate starts with a (

example1.js:

// A lot of code...
var foo = new Foo(); // last line

example2.js

(function() { // first line
// A lot code...

example1.min.js' (by UglifyJS)

var e=new Foo

example2.min.js (by UglifyJS)

(function(){

example1.min.js and example2.min.js concatinated

var e=new Foo

(function(){

or (formated by chrome)

var e=new Foo(function(){

which is problematic.

[natevw]

Is this an issue with yuglify, or with UglifyJS? You might get better advice if you ask about this at https://github.com/mishoo/UglifyJS2. Except for some comments handling in the currently published version, yuglify is just a wrapper around UglifyJS2.