follow url Minify files with UglifyJS.
http://greentrough.com/a Install package with NPM and add it to your development dependencies:
npm install --save-dev gulp-uglify
falseto skip mangling names.
Pass an object to specify custom compressor options. Pass
falseto skip compression completely.
A convenience option for
options.output.comments. Defaults to preserving no comments.
Preserve all comments in code blocks
Attempts to preserve comments that likely contain licensing information, even if the comment does not have directives such as
Implemented via the
uglify-save-licensemodule, this option preserves a comment if one of the following is true:
- The comment is in the first line of a file
- A regular expression matches the string of the comment. For example:
- There is a comment at the previous line, and it matches 1, 2, or 3.
Specify your own comment preservation function. You will be passed the current node and the current comment and are expected to return either
Preserve comments that start with a bang (
!) or include a Closure Compiler directive (
@cc_on). Deprecated in favor of the
licenseoption, documented above.
You can also pass the
uglify function any of the options listed here to modify UglifyJS’s behavior.
gulp-uglify emits an ‘error’ event if it is unable to minify a specific file. Wherever possible, the PluginError object will contain the following properties:
To handle errors across your entire pipeline, see the gulp documentation.