getType is null for variables in typescript files

Hi,
I have worked on an angular codebase and created a codeQL database . I was able to get type informations(getType) for that codebase but now when I started querying another angular codebase I am not getting any type information . Both the angular codebase are similar(developed using the same angular practices). Is there any explanation for why this codebase is not providing type information?