Are there any javascript minifiers that preserve line breaks?

Question

Error reporting from the client that always reports an error on line 1 (because the file is minified) is not very useful. I'd like to minify my code while preserving line breaks so that I get meaningful line numbers.

Are there any javascript minifiers that have an option to preserve line breaks?

Answer 1

Take a look at closure compiler from Google with pretty print option enabled

There are also plenty of options if you use the command line tool.

Answer 2

I've been looking for the same thing and although I've not found exactly what I want, I've just seen that the (now deprecated) YUI Compressor has a --line-break 0 switch that causes a line break to be inserted after each semicolon. Since I was using YUI Compressor anyway, I think this will do for my debugging purposes.