There is an unsaved comment in progress. You will lose your changes if you continue. Are you sure you want to reopen the work item?
TFS does not autocheck/compile js files if not checked out
If you project is added to Team Foundation Server and your ts and js files are checked in and you rebuild/run your project it errrors out because the ts file's js file is checked in and therefor cannot be edited. You have to have all your ts files checked
And if you edit your ts file and it is auto checked out, the ts file's js file is not also automatically checked out and there is no option to checkout the js file. You have to manually checkout the ts file for its js file to check out for edit.