lint problem after pnpm update

[shinokada]

Describe the bug

This must be related to eslint@9.15.0, eslint issue and this issue

After installing svelte and run pnpm update && pnpm lint, it outputs the following:

> svelte-lint-problem@0.0.1 lint /Users/shinichiokada/Downloads/svelte/svelte-lint-problem
> prettier --check . && eslint .

Checking formatting...
All matched files use Prettier code style!

Oops! Something went wrong! :(

ESLint: 9.15.0

TypeError: Error while loading rule '@typescript-eslint/no-unused-expressions': Cannot read properties of undefined (reading 'allowShortCircuit')
Occurred while linting /Users/shinichiokada/Downloads/svelte/svelte-lint-problem/e2e/demo.test.ts
    at Object.create (/Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/eslint@9.15.0_jiti@1.21.6/node_modules/eslint/lib/rules/no-unused-expressions.js:75:13)
    at create (/Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/@typescript-eslint+eslint-plugin@8.14.0_@typescript-eslint+parser@8.14.0_eslint@9.15.0_jiti@1_b7xo6eoa5ndkcprsdlxo2rbzx4/node_modules/@typescript-eslint/eslint-plugin/dist/rules/no-unused-expressions.js:28:32)
    at Object.create (/Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/@typescript-eslint+utils@8.14.0_eslint@9.15.0_jiti@1.21.6__typescript@5.6.3/node_modules/@typescript-eslint/utils/dist/eslint-utils/RuleCreator.js:31:20)
    at createRuleListeners (/Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/eslint@9.15.0_jiti@1.21.6/node_modules/eslint/lib/linter/linter.js:944:21)
    at /Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/eslint@9.15.0_jiti@1.21.6/node_modules/eslint/lib/linter/linter.js:1082:84
    at Array.forEach (<anonymous>)
    at runRules (/Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/eslint@9.15.0_jiti@1.21.6/node_modules/eslint/lib/linter/linter.js:1013:34)
    at #flatVerifyWithoutProcessors (/Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/eslint@9.15.0_jiti@1.21.6/node_modules/eslint/lib/linter/linter.js:1911:31)
    at Linter._verifyWithFlatConfigArrayAndWithoutProcessors (/Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/eslint@9.15.0_jiti@1.21.6/node_modules/eslint/lib/linter/linter.js:1993:49)
    at Linter._verifyWithFlatConfigArray (/Users/shinichiokada/Downloads/svelte/svelte-lint-problem/node_modules/.pnpm/eslint@9.15.0_jiti@1.21.6/node_modules/eslint/lib/linter/linter.js:2082:21)
 ELIFECYCLE  Command failed with exit code 2.

Reproduction

npx sv create svelte-lint-problem
pnpm update
pnpm lint

Solution

I just need to install eslint@9.14.0.

pnpm i -D eslint@9.14.0

Logs

No response

System Info

System:
    OS: macOS 15.1
    CPU: (10) arm64 Apple M2 Pro
    Memory: 302.03 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.16.0 - ~/.nvm/versions/node/v20.16.0/bin/node
    npm: 10.8.1 - ~/.nvm/versions/node/v20.16.0/bin/npm
    pnpm: 9.13.2 - /opt/homebrew/bin/pnpm
    bun: 1.1.8 - ~/.bun/bin/bun
  Browsers:
    Chrome: 131.0.6778.70
    Edge: 131.0.2903.51
    Safari: 18.1
  npmPackages:
    svelte: ^5.0.0 => 5.2.2

Severity

annoyance

[SDAdham]

I have the same problem as well.

[majovkovic]

The default Svelte project setup initializes with ESLint (eslint@9.7.0), which is not the latest version but still exhibits issues due to an upstream problem with @typescript-eslint. This results in errors such as:

TypeError: Error while loading rule '@typescript-eslint/no-unused-expressions': Cannot read properties of undefined (reading 'allowShortCircuit')

Since this issue originates upstream and is not directly within Svelte's control, relying on ESLint as the only default option restricts users unnecessarily.

Suggestion:
During project initialization, Svelte should allow users to choose between:

No linter,
ESLint,
An alternative like BiomeJS.

This would offer more flexibility and prevent users from encountering issues tied to specific tools that Svelte does not directly manage.

[Conduitry]

BiomeJS is not a viable option currently. https://biomejs.dev/internals/language-support/#html-super-languages-support

[AdrianGonz97]

This is now resolved as of typescript-eslint@8.15.0