gulp-uglify

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() { return gulp.src('app/**/*.js') // .pipe(concat('script.js')) .pipe(uglify()) .pipe(gulp.dest('./dist/')) }); but i am getting error as when i try to run gulp task as gulp concat Any help would be appreciated haouarin The main error is generated when you're using ES6 format. Use the gulp-uglify-es module instead of 'gulp-uglify' to overcome this error. var uglify = require('gulp-uglify-es').default; Note: gulp-uglify-es is no longer being

I am using es6 syntax in my angular JS project but it throws error when run gulp build , search over github and So but some saying this is error due to gulp uglify while some say this is babel issue and other say ng-annonate issue. ubuntu 14.04 node -v : 8.4.0 npm -v : 5.3.0 babel --version : 6.26.0 (babel-core 6.26.0) package.json { "name": "Project", "version": "0.0.0", "dependencies": { "gulp-open": "^2.0.0" }, "scripts": { "test": "gulp test" }, "devDependencies": { "babel": "^6.23.0", "babel-core": "^6.25.0", "babel-preset-es2015": "^6.24.1", "browser-sync": "~2.9.11", "browser-sync-spa":

When I run gulp I get the following error: [12:54:14] { [GulpUglifyError: unable to minify JavaScript] cause: { [SyntaxError: Unexpected token: operator (>)] message: 'Unexpected token: operator (>)', filename: 'bundle.js', line: 3284, col: 46, pos: 126739 }, plugin: 'gulp-uglify', fileName: 'C:\\servers\\vagrant\\workspace\\awesome\\web\\tool\\bundle.js', showStack: false } The offending line contains an arrow function: var zeroCount = numberArray.filter(v => v === 0).length I know I can replace it with the following to remedy the minification error: var zeroCount = numberArray.filter

When i use gulp-uglify with browserify i get a error events.js:72 throw er; // Unhandled 'error' event ^ Error at new JS_Parse_Error (/home/rkmax/my-project/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:189:18) at js_error (/home/rkmax/my-project/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:197:11) at croak (/home/rkmax/my-project/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:656:9) at token_error (/home/rkmax/my-project/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:664:9) at expect_token (/home/rkmax/my-project/node_modules/gulp

I am trying to use gulp in order to minify a folder containing JS files. However, one of the files has the above error, preventing it from being minified. I managed to catch and print the error, which I've partially printed here: JS_Parse_Error { message: 'SyntaxError: Unexpected token: punc ())', filename: 'ex.js', line: 189, col: 25, pos: 6482, stack: Error\n at new JS_Parse_Error (eval at <anonymous> ... ) plugin: 'gulp-uglify', fileName: '.../js/ex.js', showStack: false } The file in question contains the following, shortened: function() { ... $.confirm({ buttons: { confirm: function() { $