---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.jsonc
---
# Input
```cjs
var {} = foo;
```

# Diagnostics
```
invalid.jsonc:1:5 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty object pattern.
  
  > 1 │ var {} = foo;
      │     ^^
  

```

# Input
```cjs
var [] = foo;
```

# Diagnostics
```
invalid.jsonc:1:5 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty array pattern.
  
  > 1 │ var [] = foo;
      │     ^^
  

```

# Input
```cjs
var {a: {}} = foo;
```

# Diagnostics
```
invalid.jsonc:1:9 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty object pattern.
  
  > 1 │ var {a: {}} = foo;
      │         ^^
  

```

# Input
```cjs
var {a, b: {}} = foo;
```

# Diagnostics
```
invalid.jsonc:1:12 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty object pattern.
  
  > 1 │ var {a, b: {}} = foo;
      │            ^^
  

```

# Input
```cjs
var {a: []} = foo;
```

# Diagnostics
```
invalid.jsonc:1:9 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty array pattern.
  
  > 1 │ var {a: []} = foo;
      │         ^^
  

```

# Input
```cjs
function foo({}) {};
```

# Diagnostics
```
invalid.jsonc:1:14 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty object pattern.
  
  > 1 │ function foo({}) {};
      │              ^^
  

```

# Input
```cjs
function foo([]) {};
```

# Diagnostics
```
invalid.jsonc:1:14 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty array pattern.
  
  > 1 │ function foo([]) {};
      │              ^^
  

```

# Input
```cjs
function foo({a: {}}) {};
```

# Diagnostics
```
invalid.jsonc:1:18 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty object pattern.
  
  > 1 │ function foo({a: {}}) {};
      │                  ^^
  

```

# Input
```cjs
function foo({a: []}) {};
```

# Diagnostics
```
invalid.jsonc:1:18 lint/correctness/noEmptyPattern ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Unexpected empty array pattern.
  
  > 1 │ function foo({a: []}) {};
      │                  ^^
  

```