gulp common plug-ins use the gulp-uglify

More gulp common plug-ins use please visit: gulp common plug-ins summary

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gulp-uglify This is a narrow use UglifyJS js file.

Greater use of the document, please click visit gulp-uglify tool official website .

installation

A key installation much explanation

npm install --save-dev gulp-uglify

use

var gulp = require('gulp');
var uglify = require('gulp-uglify');
var pipeline = require('readable-stream').pipeline;

gulp.task('compress', function () {
  return pipeline(
        gulp.src('lib/*.js'),
        uglify(),
        gulp.dest('dist')
  );
});

In order to help properly handle error conditions Node stream, the project recommends using Pipeline from the readable-Stream .

Options
support UglifyJS API Most minify options . There are some exceptions:
sourceMapnot set this option, because it according to your Gulpconfigure automatic configuration. See Gulp source map document

Errors
gulp-uglify If you can not shrink a particular file, the issue "error" event. The plug-export GulpUglifyErrorconstructor to be instanceofchecked. It contains the following properties:

• fileName: Full file path of the file to be reduced.
• cause: The original UglifyJS error (if any).
  Most UglifyJS error message has the following properties:
• message（或msg）
• filename
• line

Using different UglifyJS
default, gulp-uglifyuse UglifyJS version is installed as a dependency. You can use "composer" entry points configured to use other versions.

var uglifyjs = require('uglify-js'); // 可以是git checkout 
                                     // 或其他模块（例如ES6支持的`uglify-es`）
var composer = require('gulp-uglify/composer');
var pump = require('pump');

var minify = composer(uglifyjs, console);

gulp.task('compress', function (cb) {
  // 与上述相同的选项
  var options = {};

  pump([
      gulp.src('lib/*.js'),
      minify(options),
      gulp.dest('dist')
    ],
    cb
  );
});