[new-rule-option] Introduce new typedef rule option (variable-declaration-ignore-function)

[michaelw85]

PR checklist

• New feature Typedef enforcement for variables that contain a function #2654
  • Includes tests
• Documentation update

Overview of change:

Add new option for typedef rule.
Ignores typedef requirement for vars for arrow and non arrow functions.

CHANGELOG.md entry:

[new-rule-option] typedef new option: variable-declaration-ignore-function

[palantirtech]

Thanks for your interest in palantir/tslint, @michaelw85! Before we can accept your pull request, you need to sign our contributor license agreement - just visit https://cla.palantir.com/ and follow the instructions. Once you sign, I'll automatically update this pull request.

[michaelw85]

@JoshuaKGoldberg Could you review this PR or do you know anyone who would be able to?

[JoshuaKGoldberg]

Hi yes, sorry for the delay! I will soon 🙂.

For context, both adidahiya and I are maintaining TSLint in roughly part time amounts. There's also a lot of ongoing work for migrating to ESLint. So this might take a few days more.

[michaelw85]

@JoshuaKGoldberg Thanks for the reply. Don't worry there is no rush (for me) although I would definitely be happy to have this feature. I wasn't sure if anyone noticed the PR so I thought I would tag you since you categorized the linked feature request.

[JoshuaKGoldberg]

Source code looks good to me! Just waiting on test changes.

[michaelw85]

@JoshuaKGoldberg PR is updated! Thanks for reviewing.

[JoshuaKGoldberg]

LGTM, thanks for the PR @michaelw85!

[JoshuaKGoldberg]

testNext failures are unrelated; will file a separate issue.