Shorten your feedback loop by using a continuous unit test or code runner.
For JavaScript and it's variants I use WallabyJS (unit tests) and QuokkaJS (code).
For C# there's nCrunch.
For Python there's PyCrunch.
And for Java and it's variants you can find InfinitTest
Here's a video by myself showing the JavaScript tools: https://youtu.be/MpFImvZrbDY