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规则 | Rules

array-bracket-newline

--fix命令行上的选项可以自动修复一些被这条规则反映的问题。

许多样式指南要求或不允许数组括号内的换行符。

规则细节

规则在打开和关闭数组括号之前强制换行。

选项

这条规则有字符串选项:

  • "always" 需要括号内的换行符
  • "never" 不允许括号内的换行符
  • "consistent"要求每对括号一致使用换行符。如果其中一个支架在其内部有换行符,而另一个支架没有,则报告错误。
  • 或者一个对象选项(如果满足任何属性,则需要换行符,否则不允许换行符):
  • "multiline": true(默认)如果元素内或元素之间存在换行符,则需要换行。如果这是错误的,则禁用此条件。
  • "minItems": null(默认)如果元素的数量至少是给定的整数,则需要换行符。如果这是0,这个条件将与选项相同"always"。如果这是null(默认),则禁用此条件。

always

"always"规则的错误代码示例包含以下选项:

/*eslint array-bracket-newline: ["error", "always"]*/

var a = [];
var b = [1];
var c = [1, 2];
var d = [1,
    2];
var e = [function foo() {
    dosomething();
}];

"always"规则的正确代码示例包含以下选项:

/*eslint array-bracket-newline: ["error", "always"]*/

var a = [
];
var b = [
    1
];
var c = [
    1, 2
];
var d = [
    1,
    2
];
var e = [
    function foo() {
        dosomething();
    }
];

never

"never"规则的错误代码示例包含以下选项:

/*eslint array-bracket-newline: ["error", "never"]*/

var a = [
];
var b = [
    1
];
var c = [
    1, 2
];
var d = [
    1,
    2
];
var e = [
    function foo() {
        dosomething();
    }
];

"never"规则的正确代码示例包含以下选项:

/*eslint array-bracket-newline: ["error", "never"]*/

var a = [];
var b = [1];
var c = [1, 2];
var d = [1,
    2];
var e = [function foo() {
    dosomething();
}];

一致性

"consistent"规则的错误代码示例包含以下选项:

/*eslint array-bracket-newline: ["error", "consistent"]*/

var a = [1
];
var b = [
    1];
var c = [function foo() {
    dosomething();
}
]
var d = [
    function foo() {
        dosomething();
    }]

"consistent"规则的正确代码示例包含以下选项:

/*eslint array-bracket-newline: ["error", "consistent"]*/

var a = [];
var b = [
];
var c = [1];
var d = [
    1
];
var e = [function foo() {
    dosomething();
}];
var f = [
    function foo() {
        dosomething();
    }
];

multiline

{ "multiline": true }规则的默认代码错误代码示例:

/*eslint array-bracket-newline: ["error", { "multiline": true }]*/

var a = [
];
var b = [
    1
];
var c = [
    1, 2
];
var d = [1,
    2];
var e = [function foo() {
    dosomething();
}];

{ "multiline": true }:具有默认选项的此规则的正确代码示例:

/*eslint array-bracket-newline: ["error", { "multiline": true }]*/

var a = [];
var b = [1];
var c = [1, 2];
var d = [
    1,
    2
];
var e = [
    function foo() {
        dosomething();
    }
];

minItems

{ "minItems": 2 }规则的错误代码示例包含以下选项:

/*eslint array-bracket-newline: ["error", { "minItems": 2 }]*/

var a = [
];
var b = [
    1
];
var c = [1, 2];
var d = [1,
    2];
var e = [
  function foo() {
    dosomething();
  }
];

{ "minItems": 2 }规则的正确代码示例包含以下选项:

/*eslint array-bracket-newline: ["error", { "minItems": 2 }]*/

var a = [];
var b = [1];
var c = [
    1, 2
];
var d = [
    1,
    2
];
var e = [function foo() {
    dosomething();
}];

multiline and minItems

{ "multiline": true, "minItems": 2 }规则错误代码示例如下:

/*eslint array-bracket-newline: ["error", { "multiline": true, "minItems": 2 }]*/

var a = [
];
var b = [
    1
];
var c = [1, 2];
var d = [1,
    2];
var e = [function foo() {
    dosomething();
}];

{ "multiline": true, "minItems": 2 }规则的正确代码示例包含以下{ "multiline": true, "minItems": 2 }选项:

/*eslint array-bracket-newline: ["error", { "multiline": true, "minItems": 2 }]*/

var a = [];
var b = [1];
var c = [
    1, 2
];
var d = [
    1,
    2
];
var e = [
    function foo() {
        dosomething();
    }
];

何时不使用它

如果您不希望在打开数组括号后强制换行,请不要启用此规则。

兼容性

  • JSCS: validateNewlineAfterArrayElements相关规则
  • array-bracket-spacing

版本

规则在ESLint 4.0.0-alpha.1中引入。

资源

  • Rule source
  • Documentation source

规则 | Rules相关

1.accessor-pairs
2.array-bracket-spacing
3.array-callback-return
4.array-element-newline
5.arrow-body-style
6.arrow-parens
7.arrow-spacing
8.block-scoped-var
9.block-spacing
10.brace-style
11.callback-return
12.camelcase
13.capitalized-comments
14.class-methods-use-this
15.comma-dangle
16.comma-spacing
17.comma-style
18.complexity
19.computed-property-spacing
20.consistent-return
21.consistent-this
22.constructor-super
23.curly
24.default-case
25.dot-location
26.dot-notation
27.eol-last
28.eqeqeq
29.for-direction
30.func-call-spacing
31.func-name-matching
32.func-names
33.func-style
34.function-paren-newline
35.generator-star
36.generator-star-spacing
37.getter-return
38.global-require
39.global-strict
40.guard-for-in
41.handle-callback-err
42.id-blacklist
43.id-length
44.id-match
45.implicit-arrow-linebreak
46.indent
47.indent-legacy
48.init-declarations
49.jsx-quotes
50.key-spacing
51.keyword-spacing
52.line-comment-position
53.linebreak-style
54.lines-around-comment
55.lines-around-directive
56.lines-between-class-members
57.max-depth
58.max-len
59.max-lines
60.max-nested-callbacks
61.max-params
62.max-statements
63.max-statements-per-line
64.multiline-comment-style
65.multiline-ternary
66.new-cap
67.new-parens
68.newline-after-var
69.newline-before-return
70.newline-per-chained-call
71.no-alert
72.no-array-constructor
73.no-arrow-condition
74.no-await-in-loop
75.no-bitwise
76.no-buffer-constructor
77.no-caller
78.no-case-declarations
79.no-catch-shadow
80.no-class-assign
81.no-comma-dangle
82.no-compare-neg-zero
83.no-cond-assign
84.no-confusing-arrow
85.no-console
86.no-const-assign
87.no-constant-condition
88.no-continue
89.no-control-regex
90.no-debugger
91.no-delete-var
92.no-div-regex
93.no-dupe-args
94.no-dupe-class-members
95.no-dupe-keys
96.no-duplicate-case
97.no-duplicate-imports
98.no-else-return
99.no-empty
100.no-empty-character-class
Eslint

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1.指南 | Guide
2.规则 | Rules