fix(eslint-plugin): [comma-spacing] allow no space after trailing comma in objects and arrays

[islandryu]

PR Checklist

• Addresses an existing open issue: fixes Bug: [comma-spacing] conflicts with array-bracket-spacing #6874
• That issue was marked as accepting prs
• Steps in Contributing were taken

Overview

The following cases are allowed to pass

const arr = [a ,];
const obj = {'foo':'bar', 'baz':'qur',};

The following test case passed in eslint, but I wasn't sure if it should be compliant, so I put it on hold
eslint/eslint#16113

    { code: 'const arr = [1 , ];', options: [{ before: true, after: false }] },
    { code: 'const arr = [,2 , ];', options: [{ before: true, after: false }] },
    {
      code: "const obj = {'foo':'bar' ,'baz':'qur' , };",
      options: [{ before: true, after: false }],
    },

[typescript-eslint]

Thanks for the PR, @islandryu!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

---

🙏 Please, if you or your company is finding typescript-eslint valuable, help us sustain the project by sponsoring it transparently on https://opencollective.com/typescript-eslint.

[netlify]

✅ Deploy Preview for typescript-eslint ready!

Name	Link
🔨 Latest commit	9e4e9aa
🔍 Latest deploy log	https://app.netlify.com/sites/typescript-eslint/deploys/6440a357a22a120008b4b0f5
😎 Deploy Preview	https://deploy-preview-6938--typescript-eslint.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[nx-cloud]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit 9e4e9aa. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this branch

---

✅ Successfully ran 25 targets

• Node 14 - nx test eslint-plugin --coverage=false
• Node 18 - nx test eslint-plugin
• Node 18 - nx test visitor-keys
• Node 18 - nx run-many --target=build --parallel --exclude website
• Node 18 - nx test type-utils
• Node 18 - nx test utils
• nx run-many --target=lint --parallel
• Node 14 - nx test visitor-keys --coverage=false
• nx run-many --target=typecheck --parallel
• Node 14 - nx run-many --target=build --parallel --exclude website
• Node 14 - nx test scope-manager --coverage=false
• Node 18 - nx test eslint-plugin-tslint
• Node 14 - nx test typescript-estree --coverage=false
• Node 18 - nx test ast-spec
• Node 18 - nx test typescript-estree
• nx run-many --target=build --parallel --exclude website
• Node 18 - nx test scope-manager
• Node 14 - nx test type-utils --coverage=false
• Node 14 - nx test ast-spec --coverage=false
• Node 14 - nx test eslint-plugin-tslint --coverage=false
• Node 14 - nx test utils --coverage=false
• Node 14 - nx test parser --coverage=false
• Node 14 - nx test eslint-plugin-internal --coverage=false
• Node 18 - nx test eslint-plugin-internal
• Node 18 - nx test parser

---

Sent with 💌 from NxCloud.

[codecov]

Codecov Report

Merging #6938 (9e4e9aa) into main (4f3750f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6938   +/-   ##
=======================================
  Coverage   87.37%   87.37%           
=======================================
  Files         386      386           
  Lines       13192    13197    +5     
  Branches     3867     3869    +2     
=======================================
+ Hits        11526    11531    +5     
  Misses       1300     1300           
  Partials      366      366           

Flag	Coverage Δ
unittest	87.37% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/eslint-plugin/src/rules/comma-spacing.ts	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

[JoshuaKGoldberg]

I'm liking this nice clean implementation... very well done @islandryu!

Sorry for the delay here - we've been pretty focused on v6. But I'm glad to see this PR! ❤️