gulp - Mangle all variables except one with gulp-uglify

Question

Is there a way to mangle all variables except a specific one with gulp-uglify?

Answer 1

There definitely is, I couldn't find any documentation for gulp-uglify regarding these sub-options, so relied on grunt-uglify & wrote it the gulp way.

.pipe( uglify({ mangle: {except: ['jQuery']} }) ) // for gulp-uglify ^2.0.1

The above code will mangle every variable except jQuery

Hopefully this will still be useful for you. ;)

Sam.

========

NB: If you are using gulp-uglify ^3.0.0 please replace except with reserved eg:

.pipe( uglify({ mangle: {reserved: ['jQuery']} }) ) // for gulp-uglify ^3.0.0

Kudos to Lukas Winkler

Answer 2

That's right.

UglifyJS 3 except was replaced with reserved. Otherwise it will throw

DefaultsError: except` is not a supported option

it seem like this

.pipe(uglify({mangle: {reserved: ['$.loadEditor']}}))

Answer 3

This work for me

.pipe(uglify({
  mangle: { toplevel: true, except: ['variable1', 'variable2',
  'function1'], 'function2' }
}))

Answer 4

You can use like this:

gulp.src(['src/*.js'])
    .pipe(uglify({
        mangle: {
            except: ['ExtensionId'] // (base on gulp-uglify v1.5.3)
        }
    }))