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Bug: [v8.0.0-alpha.10] incorrect error message Parsing error: "parserOptions.programs" #9096

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OlivierZal opened this issue May 14, 2024 · 2 comments
Closed
4 tasks done

Bug: [v8.0.0-alpha.10] incorrect error message Parsing error: "parserOptions.programs" #9096

OlivierZal opened this issue May 14, 2024 · 2 comments
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@JoshuaKGoldberg
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bug Something isn't working locked due to age Please open a new issue if you'd like to say more. See https://typescript-eslint.io/contributing. package: typescript-estree Issues related to @typescript-eslint/typescript-estree team assigned A member of the typescript-eslint team should work on this.
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8.0.0

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@OlivierZal
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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

Bug discussed and confirmed by @JoshuaKGoldberg and @bradzacher.

Config working with typescript-eslint v7.9.0 does not work with v8.0.0-alpha.10, raising:

/Users/<...>/eslint.config.js
  0:0  error  Parsing error: "parserOptions.programs" has been provided for @typescript-eslint/parser.
The file was not found in any of the provided program instance(s): eslint.config.js

although I don't use any home-made program.

Potential culprit: https://github.com/typescript-eslint/typescript-eslint/pull/8834/files

Reproduction Repository Link

https://github.com/OlivierZal/melcloud-api/blob/e118342a2ce16c49e41e145844bc318e344cfe52/eslint.config.js

Repro Steps

  1. git clone https://github.com/OlivierZal/melcloud-api
  2. git co e118342a2ce16c49e41e145844bc318e344cfe52
  3. eslint .
  4. npm i typescript-eslint@8.0.0-alpha.10 --force
  5. eslint .
  6. compare the 2 outputs (see attached screenshots: v7.9.0 vs v8.0.0-alpha)

v7
v8

Versions

package version
@typescript-eslint/eslint-plugin 8.0.0-alpha.10
TypeScript 5.4.5
ESLint 9.2.0
node 22.1.0
@OlivierZal OlivierZal added bug Something isn't working triage Waiting for team members to take a look labels May 14, 2024
@bradzacher
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Actually I think the error message is wrong but the error itself is correct.

You have type-aware linting turned on:
https://github.com/OlivierZal/melcloud-api/blob/e118342a2ce16c49e41e145844bc318e344cfe52/eslint.config.js#L15

Then you are using ...tsEslint.configs.disableTypeChecked.rules to disable the type-aware rules
https://github.com/OlivierZal/melcloud-api/blob/e118342a2ce16c49e41e145844bc318e344cfe52/eslint.config.js#L244

However this is a misuse of the config because the config has more than just .rules - it also
https://github.com/typescript-eslint/typescript-eslint/blob/main/packages%2Feslint-plugin%2Fsrc%2Fconfigs%2Fdisable-type-checked.ts#L11

So because you're misusing the config - you never disable type-aware parsing for JS files. You've disabled all the rules but the parser is still generating types for JS files. Hence the parser is erroring on a JS file because it's not included in a tsconfig.

Docs on correct use of the config
https://typescript-eslint.io/users/configs#disable-type-checked
Or alternately (as mentioned on discord) using the extends prop provided by our config util:
https://typescript-eslint.io/packages/typescript-eslint#flat-config-extends

So yeah - the message is wrong - it should say Parsing error: "parserOptions.projects" has been provided ...
But the error itself is correct.

@bradzacher bradzacher added package: typescript-estree Issues related to @typescript-eslint/typescript-estree accepting prs Go ahead, send a pull request that resolves this issue and removed triage Waiting for team members to take a look labels May 14, 2024
@bradzacher bradzacher changed the title Bug: [v8.0.0-alpha.10] Parsing error: "parserOptions.programs" Bug: [v8.0.0-alpha.10] incorrect error message Parsing error: "parserOptions.programs" May 14, 2024
@bradzacher bradzacher added this to the 8.0.0 milestone May 14, 2024
@JoshuaKGoldberg JoshuaKGoldberg self-assigned this Jul 18, 2024
@JoshuaKGoldberg JoshuaKGoldberg added team assigned A member of the typescript-eslint team should work on this. and removed accepting prs Go ahead, send a pull request that resolves this issue labels Jul 18, 2024
@JoshuaKGoldberg JoshuaKGoldberg mentioned this issue Jul 18, 2024
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Closed by #9584.

@github-actions github-actions bot added the locked due to age Please open a new issue if you'd like to say more. See https://typescript-eslint.io/contributing. label Jul 29, 2024
@github-actions github-actions bot locked as resolved and limited conversation to collaborators Jul 29, 2024
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@JoshuaKGoldberg JoshuaKGoldberg

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bug Something isn't working locked due to age Please open a new issue if you'd like to say more. See https://typescript-eslint.io/contributing. package: typescript-estree Issues related to @typescript-eslint/typescript-estree team assigned A member of the typescript-eslint team should work on this.
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@JoshuaKGoldberg @bradzacher @OlivierZal