chore(no-sync): remove @typescript-eslint/utils

[risantos]

Description

• Remove @typescript-eslint/utils, which has typescript as a peer dependency.
  Update the getParserServices function to handle parser services directly without relying on the removed utility.

Related issues

• Warning received while installing eslint-plugin-n on JS projects without typescript:

  warning "eslint-plugin-n > @typescript-eslint/[email protected]" has unmet peer dependency "typescript@>=4.8.4 <5.9.0".
  warning "eslint-plugin-n > [email protected]" has unmet peer dependency "typescript@>=4.0.0".
  warning "eslint-plugin-n > @typescript-eslint/utils > @typescript-eslint/[email protected]" has unmet peer dependency "typescript@>=4.8.4 <5.9.0".
  warning "eslint-plugin-n > @typescript-eslint/utils > @typescript-eslint/typescript-estree > @typescript-eslint/[email protected]" has unmet peer dependency "typescript@>=4.8.4 <5.9.0".
  warning "eslint-plugin-n > @typescript-eslint/utils > @typescript-eslint/typescript-estree > @typescript-eslint/[email protected]" has unmet peer dependency "typescript@>=4.8.4 <5.9.0".
  warning "eslint-plugin-n > @typescript-eslint/utils > @typescript-eslint/typescript-estree > [email protected]" has unmet peer dependency "typescript@>=4.8.4".

[Copilot]

Pull Request Overview

This PR removes the @typescript-eslint/utils dependency and inlines its parser services logic.

• Removed @typescript-eslint/utils from package.json.
• Reimplemented getParserServices in lib/util/get-parser-services.js with custom error handling and parser detection.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
package.json	dropped @typescript-eslint/utils dependency
lib/util/get-parser-services.js	added inline parserServices logic, error messages, and a flag for type-info requirements

Comments suppressed due to low confidence (1)

lib/util/get-parser-services.js:58

• This error branch is newly introduced but lacks corresponding tests. Add unit tests to cover the scenario where parserServices.program is null and allowWithoutFullTypeInformation is false to ensure throwError is invoked as expected.

    if (parserServices.program == null && !allowWithoutFullTypeInformation) {

[scagood]

Generally love this change 💜

Thank you

[scagood]

I think we should just assume this is always false, and not give the options to change this here.

[risantos]

Thanks, updated!
Tried improving the JSDoc, too.

[MichaelDeBoey]

CC/ @JoshuaKGoldberg