I upgraded TypeScript to 3.7.2 from 3.6.x. And write code using optional chaining.
But get strange error 

> 
> Expression expected.ts(1109) 
> 
> 
> 

in (vim, VSCode) IDE, even when build was successful.

[![enter image description here](https://i.stack.imgur.com/O1fcs.png)](https://i.stack.imgur.com/O1fcs.png)