---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.cjs
---
# Input
```cjs
{}

{
 aLabel: {
 }
}

{
 function foo() {}
}

{
 // a comment
 function foo() {}
}



```

# Diagnostics
```
invalid.cjs:1:1 lint/complexity/noUselessLoneBlockStatements  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This block statement doesn't serve any purpose and can be safely removed.
  
  > 1 │ {}
      │ ^^
    2 │ 
    3 │ {
  
  i Standalone block statements without any block-level declarations are redundant in JavaScript and can be removed to simplify the code.
  
  i Safe fix: Remove redundant block.
  
    1 │ {}
      │ --

```

```
invalid.cjs:3:1 lint/complexity/noUselessLoneBlockStatements  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This block statement doesn't serve any purpose and can be safely removed.
  
    1 │ {}
    2 │ 
  > 3 │ {
      │ ^
  > 4 │  aLabel: {
  > 5 │  }
  > 6 │ }
      │ ^
    7 │ 
    8 │ {
  
  i Standalone block statements without any block-level declarations are redundant in JavaScript and can be removed to simplify the code.
  
  i Safe fix: Remove redundant block.
  
     1  1 │   {}
     2    │ - 
     3    │ - {
     4  2 │    aLabel: {
     5    │ - ·}
     6    │ - }
        3 │ + ·}
     7  4 │   
     8  5 │   {
  

```

```
invalid.cjs:8:1 lint/complexity/noUselessLoneBlockStatements  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This block statement doesn't serve any purpose and can be safely removed.
  
     6 │ }
     7 │ 
   > 8 │ {
       │ ^
   > 9 │  function foo() {}
  > 10 │ }
       │ ^
    11 │ 
    12 │ {
  
  i Standalone block statements without any block-level declarations are redundant in JavaScript and can be removed to simplify the code.
  
  i Safe fix: Remove redundant block.
  
     5  5 │    }
     6  6 │   }
     7    │ - 
     8    │ - {
     9    │ - ·function·foo()·{}
    10    │ - }
        7 │ + ·function·foo()·{}
    11  8 │   
    12  9 │   {
  

```

```
invalid.cjs:12:1 lint/complexity/noUselessLoneBlockStatements  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This block statement doesn't serve any purpose and can be safely removed.
  
    10 │ }
    11 │ 
  > 12 │ {
       │ ^
  > 13 │  // a comment
  > 14 │  function foo() {}
  > 15 │ }
       │ ^
    16 │ 
  
  i Standalone block statements without any block-level declarations are redundant in JavaScript and can be removed to simplify the code.
  
  i Safe fix: Remove redundant block.
  
     9  9 │    function foo() {}
    10 10 │   }
    11    │ - 
    12    │ - {
    13 11 │    // a comment
    14    │ - ·function·foo()·{}
    15    │ - }
       12 │ + ·function·foo()·{}
    16 13 │   
    17 14 │   
  

```