Speed up a preparation phase of the following test

Hi Gleb! Yesterday I’ve already experimented with the v4 version and noticed that tests run slow enough.

For example: [e-mail]:daedalius/cypress-react-test.git Here are 10 copies of the same test. I run them in a row:

npm run test:ci

On the timeline it takes:

• ~12 seconds for the Cypress start (it is ok. But for the cold start after Windows restarting it takes ~34 seconds)
• ~3 seconds for the first test preparation 🤔
• less than a second to run it (it is ok too)

and so on:

• ~3 seconds for next test preparation 🤔
• less than a second to run it

Total times: Windows:

1:08 for the cold start after Windows restart 0:42 for the next run

mac os:

0:38 for the cold start after a system reboot 0:34 for the next run

The output says that clean test time is 3 seconds (around ~0.3 per test). Is there any way to speed up the test preparation phase?

You know, I am in love with Cypress and this repo in particular. But it’s hard to debate with colleagues who argue that Jest does 500 tests in 20 seconds.

This is maybe important:

• I’ve noticed in the Windows Task Manager that Antimalware Service Executable activates during the test run (especially for the cold one after restart).
• Specs: Windows: Ryzen 2600x, NVME, Windows 10 build 1809 Mac: MacBook Pro 2019, i7 6-cores 2.6 - 4.5 GHz, SSD

[bahmutov]

Things are going great and soon it will be faster than lightning

[bahmutov]

@AndrewSouthpaw appreciate the timings - we are working on speeding up the bundling step. I have created prototype system for externalizing React and ReactDOM dependencies - and that really speeds things up, since every spec only has to bundle its own “small” dependencies. The Cypress team has created a different webpack preprocessor where all 3rd party dependencies are externalized. Unfortunately they got sidetracked by moving this repo, and doing some other unrelated work. Please keep an eye on this issue for updates.