noDuplicateObjectKeys

诊断类别：lint/suspicious/noDuplicateObjectKeys

¥Diagnostic Category: lint/suspicious/noDuplicateObjectKeys

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

自从：v1.0.0

¥Since: v1.0.0

来源：

¥Sources:

与以下相同：no-dupe-keys

¥Same as: no-dupe-keys

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

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

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

  ✖ This property value named a 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 value.
  
    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 value named a
  
    1 1 │   const obj = {
    2   │ - ···→ a:·1,
    3 2 │      	a: 2,
    4 3 │   }

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

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

  ✖ This setter named a 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 value.
  
    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 named a
  
    1 1 │   const obj = {
    2   │ - ···→ set·a(v)·{},
    3 2 │      	a: 2,
    4 3 │   }

有效

¥Valid

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

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

示例