noDuplicateObjectKeys

JSON (and super languages)
JavaScript (and super languages)

摘要

¥Summary

规则生效日期：v1.0.0

¥Rule available since: v1.0.0
诊断类别：lint/suspicious/noDuplicateObjectKeys

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

¥This rule is recommended, which means is enabled by default.
此规则没有修复方案。

¥This rule doesn’t have a fix.
此规则的默认严重级别为 error。

¥The default severity of this rule is error.

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "suspicious": {
5
        "noDuplicateObjectKeys": "error"
6
      }
7
    }
8
  }
9
}

描述

¥Description

禁止在对象内部使用两个同名的键。

¥Disallow two keys with the same name inside objects.

示例

¥Examples

无效

¥Invalid

1
{
2
  "title": "New title",
3
  "title": "Second title"
4
}

code-block.json:2:3 lint/suspicious/noDuplicateObjectKeys ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ The key title was already declared.
  
    1 │ {
  > 2 │   “title”: “New title”,
      │   ^^^^^^^
    3 │   “title”: “Second title”
    4 │ }
  
  ℹ This is where a duplicated key was declared again.
  
    1 │ {
    2 │   “title”: “New title”,
  > 3 │   “title”: “Second title”
      │   ^^^^^^^
    4 │ }
    5 │ 
  
  ℹ If a key is defined multiple times, only the last definition takes effect. Previous definitions are ignored.

有效

¥Valid

1
{
2
  "title": "New title",
3
  "secondTitle": "Second title"
4
}

摘要

¥Summary

规则生效日期：v1.0.0

¥Rule available since: v1.0.0
诊断类别：lint/suspicious/noDuplicateObjectKeys

¥Diagnostic Category: lint/suspicious/noDuplicateObjectKeys
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 error。

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

¥Sources:
- 与 no-dupe-keys 相同
  
  ¥Same as no-dupe-keys

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "suspicious": {
5
        "noDuplicateObjectKeys": "error"
6
      }
7
    }
8
  }
9
}

描述

¥Description

禁止在对象内部使用两个同名的键。

¥Disallow two keys with the same name inside objects.

如果多次定义同名的对象属性（将 getter 与 setter 组合时除外），则只有最后一个定义会进入对象，而先前的定义将被忽略，这可能是一个错误。

¥If an object property with the same name is defined multiple times (except when combining a getter with a setter), only the last definition makes it into the object and previous definitions are ignored, which is likely a mistake.

示例

¥Examples

无效

¥Invalid

1
const obj = {
2
     a: 1,
3
     a: 2,
4
}

code-block.js:2:5 lint/suspicious/noDuplicateObjectKeys  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This property is later overwritten by an object member with the same name.
  
    1 │ const obj = {
  > 2 │    	a: 1,
      │    	^^^^
    3 │    	a: 2,
    4 │ }
  
  ℹ Overwritten with this property.
  
    1 │ const obj = {
    2 │    	a: 1,
  > 3 │    	a: 2,
      │    	^^^^
    4 │ }
    5 │ 
  
  ℹ If an object property with the same name is defined multiple times (except when combining a getter with a setter), only the last definition makes it into the object and previous definitions are ignored.
  
  ℹ Unsafe fix: Remove this property.
  
    1 1 │   const obj = {
    2   │ - ···→ a:·1,
    3 2 │      	a: 2,
    4 3 │   }

1
const obj = {
2
     set a(v) {},
3
     a: 2,
4
}

code-block.js:2:5 lint/suspicious/noDuplicateObjectKeys  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This setter is later overwritten by an object member with the same name.
  
    1 │ const obj = {
  > 2 │    	set a(v) {},
      │    	^^^^^^^^^^^
    3 │    	a: 2,
    4 │ }
  
  ℹ Overwritten with this property.
  
    1 │ const obj = {
    2 │    	set a(v) {},
  > 3 │    	a: 2,
      │    	^^^^
    4 │ }
    5 │ 
  
  ℹ If an object property with the same name is defined multiple times (except when combining a getter with a setter), only the last definition makes it into the object and previous definitions are ignored.
  
  ℹ Unsafe fix: Remove this setter.
  
    1 1 │   const obj = {
    2   │ - ···→ set·a(v)·{},
    3 2 │      	a: 2,
    4 3 │   }

有效

¥Valid

1
const obj = {
2
     a: 1,
3
     b: 2,
4
}

1
const obj = {
2
     get a() { return 1; },
3
     set a(v) {},
4
}

noDuplicateObjectKeys

摘要

如何配置

描述

示例

无效

有效

相关链接

摘要

如何配置

描述

示例

无效

有效

相关链接