Press that "go-to definition button."

The entire Flutter SDK is available with a single click from your IDE.
It's readable, documented, and you can even edit it (and yes, hot-reload works)

We are not in those languages where the code is processed 10 times and the output is totally unreadable

We don't have header files everywhere either, making navigation horrible

The code is clean.

Even contributing is easy

Remember. When you installed Flutter, you did a git clone

Flutter is already set-up for you to contribute. No extra installation needed. It only waits for you to create a pull request