---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalidClassMethod.js
---
# Input
```jsx
export default class {
    M() {}

    METHOD() {}

    AMethod() {}

    method_1() {}

    Unknown_Style() {}

    #M() {}

    #METHOD() {}

    #AMethod() {}

    #method_1() {}

    #Unknown_Style() {}
}
```

# Diagnostics
```
invalidClassMethod.js:2:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
    1 │ export default class {
  > 2 │     M() {}
      │     ^
    3 │ 
    4 │     METHOD() {}
  
  i The name could be renamed to `m`.
  

```

```
invalidClassMethod.js:4:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
    2 │     M() {}
    3 │ 
  > 4 │     METHOD() {}
      │     ^^^^^^
    5 │ 
    6 │     AMethod() {}
  
  i The name could be renamed to `method`.
  

```

```
invalidClassMethod.js:6:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
    4 │     METHOD() {}
    5 │ 
  > 6 │     AMethod() {}
      │     ^^^^^^^
    7 │ 
    8 │     method_1() {}
  
  i The name could be renamed to `aMethod`.
  

```

```
invalidClassMethod.js:8:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
     6 │     AMethod() {}
     7 │ 
   > 8 │     method_1() {}
       │     ^^^^^^^^
     9 │ 
    10 │     Unknown_Style() {}
  
  i The name could be renamed to `method1`.
  

```

```
invalidClassMethod.js:10:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
     8 │     method_1() {}
     9 │ 
  > 10 │     Unknown_Style() {}
       │     ^^^^^^^^^^^^^
    11 │ 
    12 │     #M() {}
  
  i The name could be renamed to `unknownStyle`.
  

```

```
invalidClassMethod.js:12:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
    10 │     Unknown_Style() {}
    11 │ 
  > 12 │     #M() {}
       │     ^^
    13 │ 
    14 │     #METHOD() {}
  
  i The name could be renamed to `m`.
  

```

```
invalidClassMethod.js:14:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
    12 │     #M() {}
    13 │ 
  > 14 │     #METHOD() {}
       │     ^^^^^^^
    15 │ 
    16 │     #AMethod() {}
  
  i The name could be renamed to `method`.
  

```

```
invalidClassMethod.js:16:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
    14 │     #METHOD() {}
    15 │ 
  > 16 │     #AMethod() {}
       │     ^^^^^^^^
    17 │ 
    18 │     #method_1() {}
  
  i The name could be renamed to `aMethod`.
  

```

```
invalidClassMethod.js:18:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
    16 │     #AMethod() {}
    17 │ 
  > 18 │     #method_1() {}
       │     ^^^^^^^^^
    19 │ 
    20 │     #Unknown_Style() {}
  
  i The name could be renamed to `method1`.
  

```

```
invalidClassMethod.js:20:5 lint/style/useNamingConvention ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This class method name should be in camelCase.
  
    18 │     #method_1() {}
    19 │ 
  > 20 │     #Unknown_Style() {}
       │     ^^^^^^^^^^^^^^
    21 │ }
  
  i The name could be renamed to `unknownStyle`.
  

```