Add sample for an incremental and watching program

[perbergland]

The now very old still unmerged PR #225 has been very useful in creating an incrementally building program but now I want to set up an incrementally building program that also watches for changes so I can avoid the long file system scan that happens when I create the incremental program.

Unfortunately I don't understand how to combine the different host, program and configuration objects to achieve this.

[perbergland]

Any chance someone could help out here by stating if it’s even possible and if so give a few lines of code on how to wire together incremental compilation and watch mode?

[weykon]

Wow, although this is an issue 3 years ago, I am currently learning about typescript compilers. I am happy to follow up the research on this issue. I will leave a comment here and develop it if I can.