---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.ts
---
# Input
```ts
class TsBioo {
	private unusedProperty = 5;

	private unusedMethod() {

	};
}

class TSUnusedPrivateConstructor {
	constructor(private nusedProperty = 3){

	}
}


class TsOnlyWrite {
	private usedOnlyInWrite = 5;

	method() {
		this.usedOnlyInWrite = 21;
	}
}

class TsSelfUpdate {
	private usedOnlyToUpdateItself = 5;

	method() {
		this.usedOnlyToUpdateItself++;
	}
}

class TsAccessor {
	private get unusedAccessor() { }
	private set unusedAccessor(value) { }
}

```

# Diagnostics
```
invalid.ts:2:10 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This private class member is defined but never used.
  
    1 │ class TsBioo {
  > 2 │ 	private unusedProperty = 5;
      │ 	        ^^^^^^^^^^^^^^
    3 │ 
    4 │ 	private unusedMethod() {
  
  i Unsafe fix: Remove unused declaration.
  
     1  1 │   class TsBioo {
     2    │ - → private·unusedProperty·=·5;
     3  2 │   
     4  3 │   	private unusedMethod() {
  

```

```
invalid.ts:4:10 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This private class member is defined but never used.
  
    2 │ 	private unusedProperty = 5;
    3 │ 
  > 4 │ 	private unusedMethod() {
      │ 	        ^^^^^^^^^^^^
    5 │ 
    6 │ 	};
  
  i Unsafe fix: Remove unused declaration.
  
     1  1 │   class TsBioo {
     2    │ - → private·unusedProperty·=·5;
     3    │ - 
     4    │ - → private·unusedMethod()·{
     5    │ - 
     6    │ - → };
        2 │ + → private·unusedProperty·=·5;;
     7  3 │   }
     8  4 │   
  

```

```
invalid.ts:10:22 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This private class member is defined but never used.
  
     9 │ class TSUnusedPrivateConstructor {
  > 10 │ 	constructor(private nusedProperty = 3){
       │ 	                    ^^^^^^^^^^^^^^
    11 │ 
    12 │ 	}
  
  i Unsafe fix: Remove unused declaration.
  
    10 │ → constructor(private·nusedProperty·=·3){
       │               -------------------------  

```

```
invalid.ts:17:10 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This private class member is defined but never used.
  
    16 │ class TsOnlyWrite {
  > 17 │ 	private usedOnlyInWrite = 5;
       │ 	        ^^^^^^^^^^^^^^^
    18 │ 
    19 │ 	method() {
  
  i Unsafe fix: Remove unused declaration.
  
    15 15 │   
    16 16 │   class TsOnlyWrite {
    17    │ - → private·usedOnlyInWrite·=·5;
    18 17 │   
    19 18 │   	method() {
  

```

```
invalid.ts:25:10 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This private class member is defined but never used.
  
    24 │ class TsSelfUpdate {
  > 25 │ 	private usedOnlyToUpdateItself = 5;
       │ 	        ^^^^^^^^^^^^^^^^^^^^^^
    26 │ 
    27 │ 	method() {
  
  i Unsafe fix: Remove unused declaration.
  
    23 23 │   
    24 24 │   class TsSelfUpdate {
    25    │ - → private·usedOnlyToUpdateItself·=·5;
    26 25 │   
    27 26 │   	method() {
  

```

```
invalid.ts:33:14 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This private class member is defined but never used.
  
    32 │ class TsAccessor {
  > 33 │ 	private get unusedAccessor() { }
       │ 	            ^^^^^^^^^^^^^^
    34 │ 	private set unusedAccessor(value) { }
    35 │ }
  
  i Unsafe fix: Remove unused declaration.
  
    31 31 │   
    32 32 │   class TsAccessor {
    33    │ - → private·get·unusedAccessor()·{·}
    34    │ - → private·set·unusedAccessor(value)·{·}
       33 │ + → private·set·unusedAccessor(value)·{·}
    35 34 │   }
    36 35 │   
  

```

```
invalid.ts:34:14 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This private class member is defined but never used.
  
    32 │ class TsAccessor {
    33 │ 	private get unusedAccessor() { }
  > 34 │ 	private set unusedAccessor(value) { }
       │ 	            ^^^^^^^^^^^^^^
    35 │ }
    36 │ 
  
  i Unsafe fix: Remove unused declaration.
  
    32 32 │   class TsAccessor {
    33 33 │   	private get unusedAccessor() { }
    34    │ - → private·set·unusedAccessor(value)·{·}
    35 34 │   }
    36 35 │   
  

```