Not Respecting ES Version (Chaining)

[VastBlast]

The minifier does not seem to respect the ECMAScript version when it comes to the Optional Chaining Operator.

It was introduced in ECMAScript 2020, but regardless of the version the minifier always adds to the operator if applicable.

For example, given the following input and setting the ES version to 2016:

const test = {};
const res = test === null || test === void 0 ? void 0 : test.hello;

It returns:

const test={},res=test==null?void 0:test?.hello

As you can see, it uses the chaining operator at test?.hello but it should not. I tested setting different years < 2020 to no avail.