Continuation to #3771 for snake case file naming

[anilreddykatta]

Summary
Conitnuation to #3771. This is WIP. Adding eslint-plugin to enfore this rule. Addresses #3890

Test plan

[codecov-io]

Codecov Report

Merging #3920 into master will not change coverage.
The diff coverage is 8.33%.

@@           Coverage Diff           @@
##           master    #3920   +/-   ##
=======================================
  Coverage   58.09%   58.09%           
=======================================
  Files         195      195           
  Lines        6751     6751           
  Branches        6        6           
=======================================
  Hits         3922     3922           
  Misses       2826     2826           
  Partials        3        3

Impacted Files	Coverage Δ
packages/jest-cli/src/lib/scroll_list.js	100% <ø> (ø)
packages/jest-cli/src/lib/buffered_console.js	7.69% <ø> (ø)
packages/jest-cli/src/generate_empty_coverage.js	87.5% <ø> (ø)
packages/jest-cli/src/reporter_dispatcher.js	41.17% <ø> (ø)
...es/jest-cli/src/lib/handle_deprecation_warnings.js	0% <ø> (ø)
packages/jest-cli/src/lib/prompt.js	95.23% <ø> (ø)
...ackages/jest-cli/src/reporters/summary_reporter.js	22.58% <ø> (ø)
packages/jest-cli/src/reporters/notify_reporter.js	13.04% <ø> (ø)
packages/jest-cli/src/lib/get_max_workers.js	100% <ø> (ø)
packages/jest-cli/src/test_name_pattern_prompt.js	94.11% <ø> (ø)
... and 30 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c8a5135...19fc6bd. Read the comment docs.

[anilreddykatta]

@aaronabramov Any inputs for which eslint-plugin to use to enforce this naming convention?

[SimenB]

unicorn has it

[anilreddykatta]

@SimenB It is running for every file including documentation(MD) files. I don't see any configuration to control this.

[SimenB]

Disable it in overrides

[anilreddykatta]

@SimenB Thanks..! Let me take a look.

[SimenB]

dev dep, not dep

[anilreddykatta]

@SimenB I thought I did it for dev dep..

[anilreddykatta]

Need some help. Some of my test cases are failing, even when I don't see any references to any of those fails. I checked out a fresh copy of JEST still same test cases are failing. Is there something I can do about it?

[aaronabramov]

@anilreddykatta did you figure it out? it passes locally.
i remember those tests were always flaky. It was something about some nested node_modules directory that was gitignored and hence invisible

[anilreddykatta]

@aaronabramov They were failing locally. I tested on another machine it worked. I added eslint-package to enforce file name convention. I exempted some directories, which are resulting in random test failures. Let's get this one merged so that we have the rule enforced on future file additions. I will work on each exempted directory independently. So, eventually, we will have a consistent naming convention. What do you think?

[aaronabramov]

@anilreddykatta sounds like a plan!
i tested this PR locally, everything seems to work.
Thanks for all the work you're doing @anilreddykatta!

[anilreddykatta]

@aaronabramov Loving it!

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.
Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.