I have a code base and I am willing to use typescript 3.7, to be precise I use 3.7.1-rc. I could build the source with the command line and even run tests in the command line, but when I want to debug the project using F5, it fails, vs code claims there are some errors, but it shows nothing in the Problems tab, but in the Outputs it says:
sample.ts(42,53): error TS1109: Expression expected.
sample.ts(42,68): error TS1005: ':' expected.
the source file is something like the following:
if (filterElements || configuration.classes?.filterElements) {
const filter = filterElements || configuration.classes!.filterElements;
in which column 53 is where the question mark exists, and 68 is where the close parenthesis exists. I even tried the VS Code Insider, it behaves the same.
I have no idea what to do. I have the same error where ever I used ? of 3.7.