---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.js
---
# Input
```jsx
describe("a test", () => { expect(1).toBe(1); })
export const myThing = "invalid";
export default function () { }
```

# Diagnostics
```
invalid.js:2:1 lint/nursery/noExportsInTest ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Do not export from a test file.
  
    1 │ describe("a test", () => { expect(1).toBe(1); })
  > 2 │ export const myThing = "invalid";
      │ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    3 │ export default function () { }
  

```

```
invalid.js:3:1 lint/nursery/noExportsInTest ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Do not export from a test file.
  
    1 │ describe("a test", () => { expect(1).toBe(1); })
    2 │ export const myThing = "invalid";
  > 3 │ export default function () { }
      │ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  

```