GulpUglifyError:Unable to minify JavaScript

Question

I am trying to minify my script files for which i am using gulp task runner And I am trying gulp-uglify plugin

Code:

 gulp.task(\'concat\', function() {         


        

Answer 1

The main error to Unable to minifies JavaScript is the path not found. You can use the task usemin For this you need:

$ sudo npm install gulp-usemin --save-dev
$ sudo npm install gulp-livereload --save-dev
$ sudo npm install gulp-util --save-dev

and requires :

var usemin = require('gulp-usemin');
var livereload = require('gulp-livereload');
var gutil = require('gulp-util'); //gutil for error display

gulp.task('usemin',['jshint'], function(){
    return gulp.src('./app/index.html')
    .pipe(usemin({
        css: [minifycss(),rev()],
        scripts: [uglify().on('error', function(err) {gutil.log(gutil.colors.red('[Error]'), err.toString());this.emit('end');}),rev()]
    })) 
    .pipe(gulp.dest('dist'))
    .pipe(livereload());
});

Change the js: [uglify(), rev()] to scripts: [uglify(), rev()]