Bug - Object Destructuring, with duplicate variable names fails

[RUSHt]

Bug

var { a, b, a } = data is valid JS but will fail minify.

Parameter a was used already [js/2944.489ea112.js:560,4] will be reported as error.

Version (complete output of terser -V or specific git commit)

Was using Quasar.

[fabiosantoscode]

Thanks for reporting! let and const do need that error but var doesn't care.