noUnusedPrivateClassMembers

JavaScript (and super languages)

摘要

¥Summary

规则生效日期：v1.3.3

¥Rule available since: v1.3.3
诊断类别：lint/correctness/noUnusedPrivateClassMembers

¥Diagnostic Category: lint/correctness/noUnusedPrivateClassMembers
此规则为推荐规则，默认启用。

¥This rule is recommended, which means is enabled by default.
此规则包含 unsafe 修复程序。

¥This rule has an unsafe fix.
此规则的默认严重级别为 warning。

¥The default severity of this rule is warning.
来源：

¥Sources:
- 与 no-unused-private-class-members 相同
  
  ¥Same as no-unused-private-class-members

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "correctness": {
5
        "noUnusedPrivateClassMembers": "error"
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      }
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    }
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  }
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}

描述

¥Description

禁止未使用的私有类成员

¥Disallow unused private class members

在代码中声明但未在任何地方使用的私有类成员很可能是由于重构不完整而导致的错误。这样的类成员会占用代码空间，并可能导致读者感到困惑。

¥Private class members that are declared and not used anywhere in the code are most likely an error due to incomplete refactoring. Such class members take up space in the code and can lead to confusion by readers.

示例

¥Examples

无效

¥Invalid

1
class OnlyWrite {
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  #usedOnlyInWrite = 5;
3

4
  method() {
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       this.#usedOnlyInWrite = 212;
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  }
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}

code-block.js:2:3 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ⚠ This private class member is defined but never used.
  
    1 │ class OnlyWrite {
  > 2 │   #usedOnlyInWrite = 5;
      │   ^^^^^^^^^^^^^^^^
    3 │ 
    4 │   method() {
  
  ℹ Unsafe fix: Remove unused declaration.
  
    1 1 │   class OnlyWrite {
    2   │ - ··#usedOnlyInWrite·=·5;
    3 2 │   
    4 3 │     method() {

1
 class TsBioo {
2
   private unusedProperty = 5;
3
 }

code-block.ts:2:12 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━

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

1
 class TsBioo {
2
   private unusedMethod() {}
3
 }

code-block.ts:2:12 lint/correctness/noUnusedPrivateClassMembers  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━

  ⚠ This private class member is defined but never used.
  
    1 │  class TsBioo {
  > 2 │    private unusedMethod() {}
      │            ^^^^^^^^^^^^
    3 │  }
    4 │ 
  
  ℹ Unsafe fix: Remove unused declaration.
  
    1 1 │    class TsBioo {
    2   │ - ···private·unusedMethod()·{}
    3 2 │    }
    4 3 │

有效

¥Valid

1
class UsedMember {
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  #usedMember = 42;
3

4
  method() {
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       return this.#usedMember;
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  }
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}

注意事项

¥Caveats

该规则目前认为，如果遇到计算访问，则所有 TypeScript 私有成员都会被使用。在以下示例中，未报告 member。它被视为已使用。

¥The rule currently considers that all TypeScript private members are used if it encounters a computed access. In the following example member is not reported. It is considered as used.

1
 class TsBioo {
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   private member: number;
3

4
   set_with_name(name: string, value: number) {
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     this[name] = value;
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   }
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 }

noUnusedPrivateClassMembers

摘要

如何配置

描述

示例

无效

有效

注意事项

相关链接