Because there's latency. It wouldn't be distracting if there's no latency at all because it feels natural even if the code is in stale shapes. I use Wallaby[0]

Because there's latency. It wouldn't be distracting if there's no latency at all because it feels natural even if the code is in stale shapes. I use Wallaby[0] to run JavaScript tests, and it shows the result on the fly just near every line of test code. The latency is very small so it's hard to notice it. After I was used to this approach the idea of press the test button, and waiting for 1s to compile, another 3s to run tests is simply tormenting. It breaks the flow because I have to repeatedly wait for the computer to catch my thought. [0]: https://wallabyjs.com/ https://wallabyjs.com/