---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.jsonc
---
# Input
```cjs
const b = [/**test*/,];
```

# Diagnostics
```
invalid.jsonc:1:11 lint/suspicious/noSparseArray  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This array contains an empty slot.
  
  > 1 │ const b = [/**test*/,];
      │           ^^^^^^^^^^^^
  
  i Unsafe fix: Replace hole with undefined
  
    1 │ const·b·=·[/**test*/undefined,];
      │                     +++++++++   

```

# Input
```cjs
const c = [,,];
```

# Diagnostics
```
invalid.jsonc:1:11 lint/suspicious/noSparseArray  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This array contains an empty slot.
  
  > 1 │ const c = [,,];
      │           ^^^^
  
  i Unsafe fix: Replace hole with undefined
  
    1 │ const·c·=·[undefined,·undefined,];
      │            +++++++++ ++++++++++   

```

# Input
```cjs
const d = [,2];
```

# Diagnostics
```
invalid.jsonc:1:11 lint/suspicious/noSparseArray  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This array contains an empty slot.
  
  > 1 │ const d = [,2];
      │           ^^^^
  
  i Unsafe fix: Replace hole with undefined
  
    1 │ const·d·=·[undefined,2];
      │            +++++++++    

```

# Input
```cjs
const e = [1,,];
```

# Diagnostics
```
invalid.jsonc:1:11 lint/suspicious/noSparseArray  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This array contains an empty slot.
  
  > 1 │ const e = [1,,];
      │           ^^^^^
  
  i Unsafe fix: Replace hole with undefined
  
    1 │ const·e·=·[1,·undefined,];
      │              ++++++++++   

```

# Input
```cjs
const f = [1,,2];
```

# Diagnostics
```
invalid.jsonc:1:11 lint/suspicious/noSparseArray  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This array contains an empty slot.
  
  > 1 │ const f = [1,,2];
      │           ^^^^^^
  
  i Unsafe fix: Replace hole with undefined
  
    1 │ const·f·=·[1,·undefined,2];
      │              ++++++++++    

```