---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: booleanOperators.js
---
# Input
```jsx
function booleanOperators() {
    if (a                                     // +1 for `if`
        && b && c                             // +1
        || d || e                             // +1
        && f) {                               // +1
        return true;
    }
}

```

# Diagnostics
```
booleanOperators.js:1:10 lint/complexity/noExcessiveCognitiveComplexity ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Excessive complexity detected.
  
  > 1 │ function booleanOperators() {
      │          ^^^^^^^^^^^^^^^^
    2 │     if (a                                     // +1 for `if`
    3 │         && b && c                             // +1
  
  i Please refactor this function to reduce its complexity score from 4 to the max allowed complexity 3.
  

```