Typescript by default uses .ts as its extension. It also has .d.ts to stand for typings. I would like to categorize the .d.ts files as "Typings" and leave the .ts and Typescript. However, even though I attempted to add a d.ts file to the list both before and after the ts in the list; all the .d.ts files were cataloged as typescript files.

I would like to be able to have the matching algorithm be smart enough to know that a .d.ts is different than a .ts file.