Use a better console-clearing string on Windows

[gaearon]

This is pretty much the same as facebook/create-react-app#2071.

It seems to work better for more recent Windows versions (according to my testing in facebook/create-react-app#2071 (comment) which I did a few months ago). I haven't verified this again but I can re-test with a Windows laptop in a few days.

[SimenB]

Maybe create some "console-clear" npm package?

[gaearon]

Do CI failures make sense to you?

[SimenB]

No... We get that error from time to time (currently why master is red on Travis). I think @aaronabramov had some theories at one point, not sure what came of it, though.

[cpojer]

Thanks! Do you mind testing this on a real windows computer before we merge this?

[gaearon]

I will. Let me grab a loaner.

[gaearon]

Just tested on Windows again, it definitely works while the previous sequence doesn't.

[codecov-io]

Codecov Report

Merging #5251 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #5251   +/-   ##
=======================================
  Coverage   61.14%   61.14%           
=======================================
  Files         203      203           
  Lines        6843     6843           
  Branches        3        3           
=======================================
  Hits         4184     4184           
  Misses       2658     2658           
  Partials        1        1

Impacted Files	Coverage Δ
packages/jest-cli/src/constants.js	100% <100%> (ø)	⬆️

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[SimenB]

New CI passed...

I really don't like that the ansi codes seem to sometimes be missing

[github-actions]

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