What version of Oxlint are you using?

1.42.0

What command did you run?

oxlint ./tests

What does your .oxlintrc.json config file look like?

{
  "plugins": ["vitest"],
}

What happened?

The valid-expect rule currently enforces a strict 1-argument limit for expect(). This is correct for Jest, but Vitest supports an optional second argument for a custom failure message (e.g., expect(value, 'message').toBe(value)).

See the Vitest documentation for details on the message argument.

Currently, valid Vitest code like this triggers a false positive:

import { expect, test } from 'vitest'

test('adds 1 + 2 to equal 3', () => {
  expect(1 + 2, "sum is incorrect").toBe(4)
})

gives:

> valid-exprect-repro@1.0.0 lint 
> oxlint ./tests


  ⚠ eslint-plugin-jest(valid-expect): Expect takes at most 1 argument 
   ╭─[tests/sum.test.js:4:3]
 3 │ test('adds 1 + 2 to equal 3', () => {
 4 │   expect(1 + 2, "sum is incorrect").toBe(4)
   ·   ─────────────────────────────────
 5 │ })
   ╰────
  help: Remove the extra arguments.