uglifyjs2 - How do you pass the --mangle-regex option to uglify using gulp-uglify? -


i'm trying use --mange-regex option documented on uglifyjs2's github readme. problem is, build uses gulp-uglify, , isn't documented how should use --mangle-regex without command line.

my goal mangle 'private' identifiers (matching /^_/)

i've tried: 

// gulp setup code left out brevity (i'm using gulp.src() etc properly) uglify({     mangle: {         toplevel: false     },     mangleproperties: {         regex: /^_/     } });

and 

// gulp setup code left out brevity (i'm using gulp.src() etc properly) uglify({     mangle: {         regex: /^_/     } });

nothing's doin' here. little help?

turns out feature enabled in master branch of uglify of writing. correct syntax, be: 

uglify({     mangleproperties: {         regex: /^_/     } });

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