Run code transforms over global{Setup,Teardown}

[SimenB]

Summary

Fixes #5164. A caveat is that this can not transpile stuff in node_modules. This is because in order to transpile using e.g. babel-jest, we would need to load babel-jest, which means we cannot transpile it.

We could try to do static analysis on the transformer modules defined in the config and create a dependency tree of the only files we won't transform, but I'm not sure if it's worth it (or possible). Stuff in node_modules should be runnable in node either way.

EDIT: If people want, we can disable node-modules ignoring, and try to catch errors during transform. By default, Jest has transformIgnorePattern on node_modules, so shouldn't make a huge difference

Test plan

I added a flow annotation to an existing test to show the transform happens.

[SimenB]

using p-each-series allows us to make sure one require hook does not interfere with another

[SimenB]

pirates is what babel-register uses

[codecov-io]

Codecov Report

Merging #7562 into master will decrease coverage by 0.35%.
The diff coverage is 30%.

@@            Coverage Diff             @@
##           master    #7562      +/-   ##
==========================================
- Coverage   68.28%   67.93%   -0.36%     
==========================================
  Files         250      248       -2     
  Lines        9627     9503     -124     
  Branches        5        5              
==========================================
- Hits         6574     6456     -118     
+ Misses       3051     3045       -6     
  Partials        2        2

Impacted Files	Coverage Δ
packages/jest-cli/src/runGlobalHook.js	42.3% <30%> (-19.24%)	⬇️
packages/jest-cli/src/jest.js	0% <0%> (-100%)	⬇️
packages/jest-config/src/getCacheDirectory.js	80% <0%> (-7.5%)	⬇️
packages/jest-jasmine2/src/PCancelable.js	27.58% <0%> (-4.68%)	⬇️
packages/babel-jest/src/index.js	72.22% <0%> (-3.97%)	⬇️
packages/jest-environment-node/src/index.js	59.25% <0%> (-2.81%)	⬇️
packages/jest-environment-jsdom/src/index.js	37.5% <0%> (-1.53%)	⬇️
packages/jest-circus/src/utils.js	19.83% <0%> (-0.66%)	⬇️
packages/jest-snapshot/src/index.js	52% <0%> (-0.64%)	⬇️
packages/jest-runner/src/index.js	75.6% <0%> (-0.59%)	⬇️
... and 85 more

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[thymikee]

☠️ pirates!

[rickhanlonii]

Legit

[ezzabuzaid]

This doesn't work with "testEnvironment"

[SimenB]

#8479

[github-actions]

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