I am using Visual Studio Community edition 2015 for development, I have added *.ts file to my project but its not automatically compiling.
I regularly encounter this issue in VS 2015 and VS 2013. My solution is not a pretty one, but it works for me...
If this doesn't work, open each TypeScript file, change one character, Save, re-build... hopefully the file will re-compile.
If this still doesn't work, open a Node.JS command prompt, change directory to the scripts directory, run;
tsc "yourfile.ts"
If this doesn't work, you've got bigger problems.