How to keep /*! comments with UglifyJS2?

问题

The default behaviour looks for @license or @preserve...

But many plugins and libraries are still using /*! for licensing comment blocks...

How can I use UglifyJS2 to preserve comments starting with /*! ?

回答1:

See https://github.com/mishoo/UglifyJS2#usage

Using the --comments argument, you can supply a regular expression.

uglifyjs jquery.plugin.js --comments '/^\/*!/' -o outfile.js

回答2:

In case that you use this VSCode extension JS & CSS Minifier (Minify), you can configure it easily. Just add a .uglifyrc file on your project root and add the following content to your file:

  {
      "output": {
        "comments": "/^\/*!/"
    }
  }

That will only preserve your license comments

来源：https://stackoverflow.com/questions/25232339/how-to-keep-comments-with-uglifyjs2