gulp - 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() {
    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

Answer 1

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 maintained. You may want to use terser/gulp-terser instead: