feat(typescript-estree): stabilize EXPERIMENTAL_useProjectService as projectService

[JoshuaKGoldberg]

PR Checklist

• [x] Addresses an existing open issue: fixes #9004
• [x] That issue was marked as accepting prs
• [x] Steps in Contributing were taken

Overview

Updates the naming and JSDoc-style comments around:

• EXPERIMENTAL_useProjectService: simplifying it to just projectService
• allowDefaultProjectForFiles: simplifying it to allowDefaultProject
• TYPESCRIPT_ESLINT_EXPERIMENTAL_TSSERVER: updates it to TYPESCRIPT_ESLINT_PROJECT_SERVICE

This is in parallel to #8031, which will need to be updated after this.

Also filed a separate #9085 to update the rest of our docs. I think that'll end up needing more discussion, so I'd like to get this in sooner & first.

💖

[typescript-eslint[bot]]

Thanks for the PR, @JoshuaKGoldberg!

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[bot]]

✅ Deploy Preview for typescript-eslint ready!

Name	Link
🔨 Latest commit	af60be8c17303461d475e879c4efccabc7a66fe5
🔍 Latest deploy log	https://app.netlify.com/sites/typescript-eslint/deploys/6650599367809400087dd18b
😎 Deploy Preview	https://deploy-preview-9084--typescript-eslint.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 98 (🟢 up 6 from production) Accessibility: 100 (no change from production) Best Practices: 92 (no change from production) SEO: 98 (no change from production) PWA: 80 (no change from production) View the detailed breakdown and full score reports

---

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

[nx-cloud[bot]]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit af60be8c17303461d475e879c4efccabc7a66fe5. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this CI Pipeline Execution

---

✅ Successfully ran 32 targets

• nx test eslint-plugin --coverage=false
• nx test utils --coverage=false
• nx run types:build
• nx test type-utils --coverage=false
• nx test visitor-keys --coverage=false
• nx run-many --target=test --parallel --exclude integration-tests --exclude website --exclude website-eslint
• nx run repo-tools:postinstall-script
• nx test typescript-eslint --coverage=false
• nx test scope-manager --coverage=false
• nx test eslint-plugin
• nx test typescript-estree --coverage=false
• nx test repo-tools --coverage=false
• nx test rule-schema-to-typescript-types --coverage=false
• nx test parser --coverage=false
• nx test eslint-plugin-internal --coverage=false
• nx test utils
• nx test type-utils
• nx test scope-manager
• nx test visitor-keys
• nx test typescript-eslint
• nx test typescript-estree
• nx run-many --target=lint --parallel --exclude eslint-plugin
• nx test ast-spec --coverage=false
• nx run-many --target=build --parallel --exclude=website --exclude=website-eslint
• nx test rule-schema-to-typescript-types
• nx test parser
• nx test ast-spec
• nx test repo-tools
• nx test eslint-plugin-internal
• nx run integration-tests:test
• nx run-many --target=typecheck --parallel
• nx run repo-tools:generate-configs

---

Sent with 💌 from NxCloud.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.46%. Comparing base (87a0a48) to head (61a2c83).

:exclamation: Current head 61a2c83 differs from pull request most recent head af60be8

Please upload reports for the commit af60be8 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##               v8    #9084      +/-   ##
==========================================
- Coverage   87.46%   87.46%   -0.01%     
==========================================
  Files         387      387              
  Lines       13117    13116       -1     
  Branches     3795     3795              
==========================================
- Hits        11473    11472       -1     
  Misses       1354     1354              
  Partials      290      290              

Flag	Coverage Δ
unittest	87.46% <100.00%> (-0.01%)	:arrow_down:

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

Files	Coverage Δ
...-estree/src/create-program/createProjectService.ts	76.92% <ø> (ø)
...eate-program/validateDefaultProjectForFilesGlob.ts	100.00% <100.00%> (ø)
...pt-estree/src/parseSettings/createParseSettings.ts	80.28% <100.00%> (ø)
...escript-estree/src/useProgramFromProjectService.ts	94.28% <ø> (-0.16%)	:arrow_down: