ES2020 is a showstopper for some older browsers e.g. all IOS 12 devices (original iPad air in my case). Safari chokes on optional chaining (?.) ES6 compile was tested in https://github.com/coder/vscode/pull/23, but then removed again in [#d4f09b4](https://github.com/coder/vscode/commit/d4f09b4df0d23ead4389b4a69c6fad86ac358892). Any plans to reinstate ES6? For other people on ios 12, the latest code-server still on ES6 (before microsoft bumped vscode to ES2020) is code-server@3.10.2