---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: simple.js
---
# Input
```jsx
let c = !a || !b;
```

# Diagnostics
```
simple.js:1:5 lint/correctness/noUnusedVariables  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This variable is unused.
  
  > 1 │ let c = !a || !b;
      │     ^
  
  i Unused variables usually are result of incomplete refactoring, typos and other source of bugs.
  
  i Safe fix: Suppress rule lint/correctness/noUnusedVariables
  
      1 │ + //·biome-ignore·lint/correctness/noUnusedVariables:·<explanation>
    1 2 │   let c = !a || !b;
  

```