sort-keys
要求对象键按排序
在声明多个属性时,一些开发人员更喜欢按字母顺序对属性名进行排序,以便在以后更容易找到和/或进行差异比较所需的属性。其他人则认为这增加了复杂性,并成为维护的负担。
规则详细信息
此规则检查对象表达式的所有属性定义,并验证所有变量是否按字母顺序排序。
此规则的错误代码示例
在游乐场中打开
/*eslint sort-keys: "error"*/
let obj1 = {a: 1, c: 3, : 2};
let obj2 = {a: 1, "c": 3, : 2};
// Case-sensitive by default.
let obj3 = {a: 1, b: 2, : 3};
// Non-natural order by default.
let obj4 = {1: a, 2: c, : b};
// This rule checks computed properties which have a simple name as well.
// Simple names are names which are expressed by an Identifier node or a Literal node.
const S = Symbol("s")
let obj5 = {a: 1, ["c"]: 3, : 2};
let obj6 = {a: 1, []: 3, b: 2};
此规则的正确代码示例
在游乐场中打开
/*eslint sort-keys: "error"*/
let obj1 = {a: 1, b: 2, c: 3};
let obj2 = {a: 1, "b": 2, c: 3};
// Case-sensitive by default.
let obj3 = {C: 3, a: 1, b: 2};
// Non-natural order by default.
let obj4 = {1: a, 10: b, 2: c};
// This rule checks computed properties which have a simple name as well.
let obj5 = {a: 1, ["b"]: 2, c: 3};
let obj6 = {a: 1, [b]: 2, c: 3};
// This rule ignores computed properties which have a non-simple name.
let obj7 = {a: 1, [c + d]: 3, b: 2};
let obj8 = {a: 1, ["c" + "d"]: 3, b: 2};
let obj9 = {a: 1, [`${c}`]: 3, b: 2};
let obj10 = {a: 1, [tag`c`]: 3, b: 2};
// This rule does not report unsorted properties that are separated by a spread property.
let obj11 = {b: 1, ...c, a: 2};
选项
{
"sort-keys": ["error", "asc", {"caseSensitive": true, "natural": false, "minKeys": 2}]
}
第一个选项是"asc"
或 "desc"
。
"asc"
(默认) - 强制属性按升序排列。"desc"
- 强制属性按降序排列。
第二个选项是一个包含以下属性的对象。
caseSensitive
- 如果为true
,则强制属性按区分大小写的顺序排列。默认值为true
。minKeys
- 指定对象应具有的最少键数,以便对象的未排序键产生错误。默认值为2
,这意味着默认情况下,所有具有未排序键的对象都会导致 lint 错误。natural
- 如果为true
,则强制属性按自然顺序排列。默认值为false
。自然顺序以人类排序的方式比较包含字母和数字组合的字符串。它基本上按数字排序,而不是按字母顺序排序。因此,数字 10 在自然排序中位于数字 3 之后。allowLineSeparatedGroups
- 如果为true
,则该规则允许通过换行符对对象键进行分组。换句话说,属性后的空白行将重置键的排序。默认值为false
。
列表示例
如果 natural
为 true,则排序将为 1 3 6 8 10
如果 natural
为 false,则排序将为 1 10 3 6 8
desc
"desc"
选项的错误代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "desc"]*/
let obj1 = {b: 2, : 3, a: 1};
let obj2 = {"b": 2, : 3, a: 1};
// Case-sensitive by default.
let obj3 = {C: 1, : 3, a: 2};
// Non-natural order by default.
let obj4 = {10: b, : c, 1: a};
"desc"
选项的正确代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "desc"]*/
let obj1 = {c: 3, b: 2, a: 1};
let obj2 = {c: 3, "b": 2, a: 1};
// Case-sensitive by default.
let obj3 = {b: 3, a: 2, C: 1};
// Non-natural order by default.
let obj4 = {2: c, 10: b, 1: a};
insensitive
{caseSensitive: false}
选项的错误代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "asc", {caseSensitive: false}]*/
let obj1 = {a: 1, c: 3, C: 4, : 2};
let obj2 = {a: 1, C: 3, c: 4, : 2};
{caseSensitive: false}
选项的正确代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "asc", {caseSensitive: false}]*/
let obj1 = {a: 1, b: 2, c: 3, C: 4};
let obj2 = {a: 1, b: 2, C: 3, c: 4};
natural
{natural: true}
选项的错误代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "asc", {natural: true}]*/
let obj = {1: a, 10: c, : b};
{natural: true}
选项的正确代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "asc", {natural: true}]*/
let obj = {1: a, 2: b, 10: c};
minKeys
{minKeys: 4}
选项的错误代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "asc", {minKeys: 4}]*/
// 4 keys
let obj1 = {
b: 2,
: 1, // not sorted correctly (should be 1st key)
c: 3,
d: 4,
};
// 5 keys
let obj2 = {
2: 'a',
: 'b', // not sorted correctly (should be 1st key)
3: 'c',
4: 'd',
5: 'e',
};
{minKeys: 4}
选项的正确代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "asc", {minKeys: 4}]*/
// 3 keys
let obj1 = {
b: 2,
a: 1,
c: 3,
};
// 2 keys
let obj2 = {
2: 'b',
1: 'a',
};
allowLineSeparatedGroups
{allowLineSeparatedGroups: true}
选项的错误代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "asc", {allowLineSeparatedGroups: true}]*/
let obj1 = {
b: 1,
c () {
},
: 3
}
let obj2 = {
b: 1,
c: 2,
z () {
},
: 3
}
let obj3 = {
b: 1,
c: 2,
z () {
},
// comment
: 3,
}
let obj4 = {
b: 1
// comment before comma
, : 2
};
{allowLineSeparatedGroups: true}
选项的正确代码示例
在游乐场中打开
/*eslint sort-keys: ["error", "asc", {allowLineSeparatedGroups: true}]*/
let obj1 = {
e: 1,
f: 2,
g: 3,
a: 4,
b: 5,
c: 6
}
let obj2 = {
b: 1,
// comment
a: 4,
c: 5,
}
let obj3 = {
c: 1,
d: 2,
b () {
},
e: 3,
}
let obj4 = {
c: 1,
d: 2,
// comment
// comment
b() {
},
e: 4
}
let obj5 = {
b,
[foo + bar]: 1,
a
}
let obj6 = {
b: 1
// comment before comma
,
a: 2
};
var obj7 = {
b: 1,
a: 2,
...z,
c: 3
}
何时不使用它
如果您不想通知属性的顺序,那么禁用此规则是安全的。
兼容性
相关规则
版本
此规则是在 ESLint v3.3.0 中引入的。