VSCode react native no import errors detected in code

I have been using vscode for couple of years but recently with version 1.45 i don't see any errors detected while i code . For example , it does not validate whether the import statement is valid nor the modules inside is valid or not . Earlier it used to clearly mark it in red if a module is not found in the import statement but still declared .

Vscode treats unknown variables as "any" and does not show any error unless i run it in the simulator.

Secondly, whenever i type an object if an import statement is found i used to see the option highlighted and now i don't see that either.

Any clue on why this behavior in vscode?.