minifier: converts optional chaining back for Chrome 88 - 91

[sapphi-red]

For this input

console.log(opts?.name)

the transformer + minifier outputs

var _opts;console.log((_opts=opts)?.name);

when target is chrome88 (playground).

This probably happens because optional chaining is transpiled into (_opts = opts) === null || _opts === void 0 ? void 0 : _opts.name by the transformer and then minified back into (_opts = opts)?.name.

We check the ES version here, but maybe we need to check whether the specific feature is supported.

oxc/crates/oxc_minifier/src/peephole/minimize_conditional_expression.rs

Line 319 in 0c55dd6

if self.target >= ESTarget::ES2020 {