Object-property set to boolean true gets minified to !(functiondeclaration)

[3iMichael]

A simplified example of the code that caused this:

var testData = { name: "myName", boolValue: true } function func() { doSomething(); }

This (along with a LOT of other code which I can't post here) got minified to something like:
var testData = { name: "myName", boolValue: !(function func(){doSomething()}) }

Since !(functionDeclaration) evaluates to false, this is not correct. I hope someone who knows how this minifier works can find the reason for this mixup.

[alexander-akait]

@3iMichael we just wrapper of uglify-es, looks as bug in uglify-es, also uglify-es is abandoned, use https://github.com/webpack-contrib/terser-webpack-plugin (webpack@5 will use this plugin for uglify). Sorry we can't do nothing here.