yield-star-spacing

要求或禁止 yield* 表达式中的 * 周围有空格

规则详情

¥Rule Details

此规则在 yield* 表达式中强制 * 周围的间距。

¥This rule enforces spacing around the * in yield* expressions.

选项

¥Options

该规则采用一个选项，一个对象，它有两个键 before 和 after，其布尔值 true 或 false。

¥The rule takes one option, an object, which has two keys before and after having boolean values true or false.

• before 强制 yield 和 * 之间的间距。如果 true，则需要空格，否则不允许使用空格。

  ¥before enforces spacing between the yield and the *. If true, a space is required, otherwise spaces are disallowed.

• after 强制 * 和参数之间的间距。如果是 true，则需要空格，否则不允许空格。

  ¥after enforces spacing between the * and the argument. If it is true, a space is required, otherwise spaces are disallowed.

默认值为 {"before": false, "after": true}。

¥The default is {"before": false, "after": true}.

"yield-star-spacing": ["error", {"before": true, "after": false}]
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该选项还有一个字符串速记：

¥The option also has a string shorthand:

• {"before": false, "after": true} → "after"

• {"before": true, "after": false} → "before"

• {"before": true, "after": true} → "both"

• {"before": false, "after": false} → "neither"

"yield-star-spacing": ["error", "after"]
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示例

¥Examples

after

使用默认 "after" 选项的此规则的正确代码示例：

¥Examples of correct code for this rule with the default "after" option:

/*eslint yield-star-spacing: ["error", "after"]*/

function* generator() {
  yield* other();
}
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before

使用 "before" 选项的此规则的正确代码示例：

¥Examples of correct code for this rule with the "before" option:

/*eslint yield-star-spacing: ["error", "before"]*/

function *generator() {
  yield *other();
}
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both

使用 "both" 选项的此规则的正确代码示例：

¥Examples of correct code for this rule with the "both" option:

/*eslint yield-star-spacing: ["error", "both"]*/

function * generator() {
  yield * other();
}
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neither

使用 "neither" 选项的此规则的正确代码示例：

¥Examples of correct code for this rule with the "neither" option:

/*eslint yield-star-spacing: ["error", "neither"]*/

function*generator() {
  yield*other();
}
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何时不使用

¥When Not To Use It

如果你的项目不使用生成器，或者你不关心间距一致性，则不需要此规则。

¥If your project will not be using generators or you are not concerned with spacing consistency, you do not need this rule.

版本

此规则是在 ESLint v2.0.0-alpha-1 中引入。

进阶读物

Read Understanding ECMAScript 6 | Leanpub
leanpub.com

资源

• 规则源码
• 测试源码