Bump jest from v26 to v27

[ybiquitous]

https://jestjs.io/blog/2021/05/25/jest-27

Which issue, if any, is this issue related to?

Blocked by stylelint/jest-preset-stylelint/pull/35

Is there anything in the PR that needs further explanation?

This PR is WIP. Now ready to review!
I've taken the following steps to create this change:

# `jest-circus` is now the default runner
npm rm jest-circus

# It seems that a new version will be published soon.
# See https://github.com/jest-community/jest-watch-typeahead/issues/61
npm i jest-community/jest-watch-typeahead --ignore-scripts

# Install Jest 27 and our preset
npm i jest@27 stylelint/jest-preset-stylelint#jest-27

To-dos

• Use a new version of jest-watch-typeahead
• Use a new version of jest-preset-stylelint

[ybiquitous]

[note] jest-circus is the default runner of Jest 27. See https://jestjs.io/blog/2021/05/25/jest-27#flipping-defaults

[ybiquitous]

Jest 27 has proceeded with the ESM support but is not finished: jestjs/jest#11167

Ref: #5291

[alexander-akait]

Until Node.js is not supported vm module with ESM without flags https://nodejs.org/api/vm.html#vm_class_vm_module it will be still in progress

[alexander-akait]

I'm afraid it won't happen soon 😞

[ybiquitous]

@alexander-akait Thanks for sharing. Not so good news. 😓

(I believe that the partial support of ESM does NOT block the merge of this PR.)

[jeddy3]

Unblocked as the new version of jest preset is published.

[ybiquitous]

@jeddy3 Thank you for the notification! I've updated jest-preset-stylelint via 5d2c4b7.

[jeddy3]

LGTM, thanks!