Reading code is the most important activity of a computer programmer. Ideally the code is then interpreted and ran as a thought experiment inside the programmer’s brain. This sounds hard, but as you learn an environment, the mind will eventually reach this level of tooling.
The ability to reason about code without running it, is the key to failing fast and often. Which you always want to do. Failing slow is painful. Just as Intellisense is a huge help for catching syntax errors early, not having to actually build & run your program, you can iterate much quicker.
Of course what happens if your internal transpiling mechanism and logic simulation units fail as you bite off more than your meat computer can handle?
Just press F5.
I recommend picking your favorite open source project and start reading. If you get stuck, just start dropping some breakpoints and calibrating your internal toolkit.