[error] WARN: Collapsing variable]

[Fenwick17]

I have some JavaScript that I am minifying with sbt-uglify. However it is throwing a few warnings regard ing [error] WARN: Collapsing variable. When I look at the JS it is perfectly valid and theres no issues, for example.

var tokens = text.match(/\S+/g) || [];
length = tokens.length;

Is there a way I can tell sbt-uglify to not provide those warnings?

[Baboly3]

Hi,

want to turn this off also, how can i do that?

[Baboly3]

Had some time over to sitt with this again, solved it!

in build.sbt make a settingKey and use it on uglifyCompressOptions.

val turnoffJSUglifyWarningsTask = SettingKey[Seq[String]]("sbt-uglify turn off console output")
turnoffJSUglifyWarningsTask := Seq( "drop_console=true, warnings=false")

and then in project settings

uglifyCompressOptions := (turnoffJSUglifyWarningsTask).value

You only need "warnings=false" but i put "drop_console" also.