Mangle all variables except one with gulp-uglify

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']}}))

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.

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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