---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: _UNDERSCOREINVALID.js
---
# Input
```jsx

```

# Diagnostics
```
_UNDERSCOREINVALID.js lint/style/useFilenamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! The filename trimmed as `UNDERSCOREINVALID` should be in camelCase or kebab-case or snake_case or equal to the name of an export.
  
  i The filename could be renamed to one of the following names:
    _underscoreinvalid.js
  

```