---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.jsonc
---
# Input
```cjs
const boolExp = true;
```

# Input
```cjs
const r = true && boolExp;
```

# Diagnostics
```
invalid.jsonc:1:11 lint/complexity/useSimplifiedLogicExpression  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Logical expression contains unnecessary complexity.
  
  > 1 │ const r = true && boolExp;
      │           ^^^^^^^^^^^^^^^
  
  i Unsafe fix: Discard redundant terms from the logical expression.
  
    1 │ const·r·=·true·&&·boolExp;
      │           --------        

```

# Input
```cjs
const boolExp2 = true;
```

# Input
```cjs
const r2 = boolExp || true;
```

# Diagnostics
```
invalid.jsonc:1:12 lint/complexity/useSimplifiedLogicExpression  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Logical expression contains unnecessary complexity.
  
  > 1 │ const r2 = boolExp || true;
      │            ^^^^^^^^^^^^^^^
  
  i Unsafe fix: Discard redundant terms from the logical expression.
  
    1 │ const·r2·=·boolExp·||·true;
      │            -----------     

```

# Input
```cjs
const nonNullExp = 123;
```

# Input
```cjs
const r3 = null ?? nonNullExp;
```

# Diagnostics
```
invalid.jsonc:1:12 lint/complexity/useSimplifiedLogicExpression  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Logical expression contains unnecessary complexity.
  
  > 1 │ const r3 = null ?? nonNullExp;
      │            ^^^^^^^^^^^^^^^^^^
  
  i Unsafe fix: Discard redundant terms from the logical expression.
  
    1 │ const·r3·=·null·??·nonNullExp;
      │            --------           

```

# Input
```cjs
const boolExpr1 = true;
```

# Input
```cjs
const boolExpr2 = false;
```

# Input
```cjs
const r4 = !boolExpr1 || !boolExpr2;
```

# Diagnostics
```
invalid.jsonc:1:12 lint/complexity/useSimplifiedLogicExpression  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Logical expression contains unnecessary complexity.
  
  > 1 │ const r4 = !boolExpr1 || !boolExpr2;
      │            ^^^^^^^^^^^^^^^^^^^^^^^^
  
  i Unsafe fix: Reduce the complexity of the logical expression.
  
  - const·r4·=·!boolExpr1·||·!boolExpr2;
  + const·r4·=·!(boolExpr1·&&·boolExpr2);
  

```