at-rule-empty-line-before

要求或不允许 at 规则前有空行。

¥Require or disallow an empty line before at-rules.

a {}
          /* ← */
@media {} /* ↑ */
/**          ↑

 *   This line */

该规则忽略了：

¥This rule ignores:

• at 规则是源中的第一个节点

  ¥at-rules that are the very first node in the source

• @charset 规则

  ¥the @charset rule

• Less 中的 @import

  ¥@import in Less

fix 选项 可以自动修复此规则报告的所有问题。

¥The fix option can automatically fix all of the problems reported by this rule.

选项

¥Options

"always"

at 规则之前必须始终有一个空行。

¥There must always be an empty line before at-rules.

{
  "at-rule-empty-line-before": "always"
}

以下模式被视为问题：

¥The following patterns are considered problems:

a {} @media {}

a {}
@media {}

以下模式不被视为问题：

¥The following patterns are not considered problems:

a {}

@media {}

"never"

at 规则之前绝不能有空行。

¥There must never be an empty line before at-rules.

{
  "at-rule-empty-line-before": "never"
}

以下模式被视为问题：

¥The following patterns are considered problems:

a {}

@media {}

以下模式不被视为问题：

¥The following patterns are not considered problems:

a {} @media {}

a {}
@media {}

可选的辅助选项

¥Optional secondary options

except

{ "except": ["array", "of", "options"] }

"after-same-name"

反转另一个同名 at 规则后面的 at 规则的主要选项。

¥Reverse the primary option for at-rules that follow another at-rule with the same name.

这意味着你可以按名称对 at 规则进行分组。

¥This means that you can group your at-rules by name.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": ["always", { "except": ["after-same-name"] }]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

@import url(x.css);
@import url(y.css);

@media (min-width: 100px) {}
@media (min-width: 200px) {}

a {

  @extends .foo;
  @extends .bar;

  @include x;
  @include y {}
}

"inside-block"

反转块内 at 规则的主要选项。

¥Reverse the primary option for at-rules that are inside a block.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": ["always", { "except": ["inside-block"] }]
}

以下模式被视为问题：

¥The following patterns are considered problems:

a {

  @extend foo;
  color: pink;
}

b {
  color: pink;

  @extend foo;
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

a {
  @extend foo;
  color: pink;
}

b {
  color: pink;
  @extend foo;
}

"blockless-after-same-name-blockless"

反转遵循另一个同名无块 at 规则的无块 at 规则的主要选项。

¥Reverse the primary option for blockless at-rules that follow another blockless at-rule with the same name.

这意味着你可以按名称对无块 at 规则进行分组。

¥This means that you can group your blockless at-rules by name.

共享行注释不影响此选项。

¥Shared-line comments do not affect this option.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": [
    "always",
    { "except": ["blockless-after-same-name-blockless"] }
  ]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

@import url(x.css);
@import url(y.css);

@namespace svg url('http://www.w3.org/2000/svg');

@import url(x.css); /* comment */
@import url(y.css);

@namespace svg url('http://www.w3.org/2000/svg');

a {

  @extends .foo;
  @extends .bar;

  @include loop;
  @include doo;
}

"blockless-after-blockless"

反转遵循另一个无块 at 规则的无块 at 规则的主要选项。

¥Reverse the primary option for blockless at-rules that follow another blockless at-rule.

共享行注释不影响此选项。

¥Shared-line comments do not affect this option.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": [
    "always",
    { "except": ["blockless-after-blockless"] }
  ]
}

以下模式被视为问题：

¥The following patterns are considered problems:

@import url(x.css);

@import url(y.css);

@media print {}

以下模式不被视为问题：

¥The following patterns are not considered problems:

@import url(x.css);
@import url(y.css);

@media print {}

@import url(x.css); /* comment */
@import url(y.css);

@media print {}

"first-nested"

反转嵌套的 at 规则及其父节点的第一个子节点的主要选项。

¥Reverse the primary option for at-rules that are nested and the first child of their parent node.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": ["always", { "except": ["first-nested"] }]
}

以下模式被视为问题：

¥The following patterns are considered problems:

a {

  @extend foo;
  color: pink;
}

b {
  color: pink;
  @extend foo;
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

a {
  @extend foo;
  color: pink;
}

b {
  color: pink;

  @extend foo;
}

ignore

{ "ignore": ["array", "of", "options"] }

"after-comment"

忽略注释后面的 at 规则。

¥Ignore at-rules that follow a comment.

共享行注释不会触发此选项。

¥Shared-line comments do not trigger this option.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": ["always", { "ignore": ["after-comment"] }]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

/* comment */
@media {}

/* comment */

@media {}

@media {} /* comment */

@media {}

"first-nested"

忽略嵌套的 at 规则及其父节点的第一个子节点。

¥Ignore at-rules that are nested and the first child of their parent node.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": ["always", { "ignore": ["first-nested"] }]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

@supports {
  @media {}

  @media {}
}

"inside-block"

忽略块内的 at 规则。

¥Ignore at-rules that are inside a block.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": ["always", { "ignore": ["inside-block"] }]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

a {
  @extend foo;
  color: pink;
}

a {

  @extend foo;
  color: pink;
}

b {
  color: pink;
  @extend foo;
}

b {
  color: pink;

  @extend foo;
}

"blockless-after-same-name-blockless"

忽略另一个同名无块 at 规则后面的无块 at 规则。

¥Ignore blockless at-rules that follow another blockless at-rule with the same name.

这意味着你可以按名称对无块 at 规则进行分组。

¥This means that you can group your blockless at-rules by name.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": [
    "always",
    { "ignore": ["blockless-after-same-name-blockless"] }
  ]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

@import url(x.css);
@import url(y.css);

@namespace svg url('http://www.w3.org/2000/svg');

a {

  @extends .foo;
  @extends .bar;

  @include loop;
  @include doo;
}

"blockless-after-blockless"

忽略跟随另一个无块 at 规则的无块 at 规则。

¥Ignore blockless at-rules that follow another blockless at-rule.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": [
    "always",
    { "ignore": ["blockless-after-blockless"] }
  ]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

@import url(x.css);

@import url(y.css);

@media print {}

@import url(x.css);
@import url(y.css);

@media print {}

ignoreAtRules

{ "ignoreAtRules": ["array", "of", "at-rules", "/regex/"] }

忽略指定的 at 规则。

¥Ignore specified at-rules.

鉴于：

¥Given:

{
  "at-rule-empty-line-before": [
    "always",
    { "ignoreAtRules": ["namespace", "/^my-/"] }
  ]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

@import "foo.css";
@namespace svg url('http://www.w3.org/2000/svg');

a {}
@my-at-rule {}