Bug: "File './tsconfig-base' not found" or "Cannot read file 'src/src/src/src/tsconfig-base.json'" in alpha (after ProjectService PR?)

[jakebailey]

Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have searched for related issues and found none that matched my issue.
• I have read the FAQ and my problem is not listed.

Issue Description

I bumped TypeScript up to the latest ts-eslint alpha to try and test out the new project service. However, I went to run a "before" benchmark and noticed that ts-eslint fails to load the configuration / tsconfig we have in the repo already, even before going to change the config.

Running eslint, I get this for each file:

/home/jabaile/work/TypeScript/src/typingsInstallerCore/_namespaces/ts.server.ts
  0:0  error  Parsing error: File './tsconfig-base' not found

/home/jabaile/work/TypeScript/src/typingsInstallerCore/_namespaces/ts.server.typingsInstaller.ts
  0:0  error  Parsing error: File './tsconfig-base' not found

/home/jabaile/work/TypeScript/src/typingsInstallerCore/_namespaces/ts.ts
  0:0  error  Parsing error: File './tsconfig-base' not found

/home/jabaile/work/TypeScript/src/typingsInstallerCore/typingsInstaller.ts
  0:0  error  Parsing error: File './tsconfig-base' not found

/home/jabaile/work/TypeScript/src/watchGuard/watchGuard.ts
  0:0  error  Parsing error: File './tsconfig-base' not found

✖ 576 problems (576 errors, 0 warnings)

Modifying our tsconfig-eslint base to instead try an explicit .json extension nets:

/home/jabaile/work/TypeScript/src/typingsInstallerCore/_namespaces/ts.server.typingsInstaller.ts
  0:0  error  Parsing error: Cannot read file 'src/src/src/src/tsconfig-base.json'

/home/jabaile/work/TypeScript/src/typingsInstallerCore/_namespaces/ts.ts
  0:0  error  Parsing error: Cannot read file 'src/src/src/src/tsconfig-base.json'

/home/jabaile/work/TypeScript/src/typingsInstallerCore/typingsInstaller.ts
  0:0  error  Parsing error: Cannot read file 'src/src/src/src/tsconfig-base.json'

/home/jabaile/work/TypeScript/src/watchGuard/watchGuard.ts
  0:0  error  Parsing error: Cannot read file 'src/src/src/src/tsconfig-base.json'

✖ 576 problems (576 errors, 0 warnings)

I suspect that maybe something regressed in said ProjectService change, but I can't be sure.

Reproduction Repository Link

https://github.com/jakebailey/TypeScript/tree/eslint-v6-alpha

Repro Steps

1. clone the repo
2. npm ci
3. npx eslint .

Versions

package	version
@typescript-eslint/eslint-plugin	6.0.1-alpha.28
@typescript-eslint/parser	6.0.1-alpha.28
@typescript-eslint/scope-manager	6.0.1-alpha.28
@typescript-eslint/typescript-estree	6.0.1-alpha.28
@typescript-eslint/type-utils	6.0.1-alpha.28
@typescript-eslint/utils	6.0.1-alpha.28
TypeScript	5.1.6
ESLint	8.45.0
node	20.4.0

[bradzacher]

The project service change was published as 6.0.1-alpha.18
So could you perhaps try 6.0.1-alpha.17 to see if it works to help us bisect?

[jakebailey]

Just checked, and 17 works while 18 does not, so that definitely narrows it down.

[JoshuaKGoldberg]

Grr, thanks for trying this out so quickly @jakebailey. Probably saved us from an awkward quick revert after the scheduled release today. I'll revert #6754 now and file a ticket to add it back, with tests confirming this doesn't regress again.

[JoshuaKGoldberg]

@jakebailey what version of npm are you using? 8.19.4 per the package.json, I'm guessing? On 9.6.6, I get:

$ npm ci
npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR! 
npm ERR! While resolving: @typescript-eslint/eslint-plugin@6.0.1-alpha.28
npm ERR! Found: @typescript-eslint/parser@6.0.1-alpha.28
npm ERR! node_modules/@typescript-eslint/parser
npm ERR!   dev @typescript-eslint/parser@"6.0.1-alpha.28" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer @typescript-eslint/parser@"^6.0.0 || ^6.0.0-alpha" from @typescript-eslint/eslint-plugin@6.0.1-alpha.28
npm ERR! node_modules/@typescript-eslint/eslint-plugin
npm ERR!   dev @typescript-eslint/eslint-plugin@"6.0.1-alpha.28" from the root project
npm ERR! 
npm ERR! Conflicting peer dependency: @typescript-eslint/parser@6.0.0
npm ERR! node_modules/@typescript-eslint/parser
npm ERR!   peer @typescript-eslint/parser@"^6.0.0 || ^6.0.0-alpha" from @typescript-eslint/eslint-plugin@6.0.1-alpha.28
npm ERR!   node_modules/@typescript-eslint/eslint-plugin
npm ERR!     dev @typescript-eslint/eslint-plugin@"6.0.1-alpha.28" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 
npm ERR! 
npm ERR! For a full report see:
npm ERR! /Users/josh/.npm/_logs/2023-07-17T13_47_07_103Z-eresolve-report.txt

npm ERR! A complete log of this run can be found in: /Users/josh/.npm/_logs/2023-07-17T13_47_07_103Z-debug-0.log

I can repro your issue with npm ci --force though.

[JoshuaKGoldberg]

Actually, never mind. Confirmed that main locally reproduces this issue for me while the revert in #7251 fixes the issue.