lines-between-class-members
Require or disallow an empty line between class members
🔧 Fixable
Some problems reported by this rule are automatically fixable by the --fix command line option
这条规则通过在类成员之间强制执行行来提高可读性。它不会检查第一个成员之前和最后一个成员之后的空行，因为上下块已经考虑到了这一点。
规则细节
使用此规则的错误示例：
Open in Playground
/* eslint lines-between-class-members: ["error", "always"]*/
class MyClass {
x;
foo() {
//...
}
bar() {
//...
}
}
使用此规则的正确示例：
Open in Playground
/* eslint lines-between-class-members: ["error", "always"]*/
class MyClass {
x;
foo() {
//...
}
bar() {
//...
}
}
使用此规则的额外正确示例：
Open in Playground
/* eslint lines-between-class-members: ["error", "always"]*/
class MyClass {
x = 1
;in = 2
}
选项
这个规则有一个字符串选项和一个对象选项。
字符串选项：
"always"（默认）要求在类成员后有一个空行。"never"不允许在类成员后出现空行。
对象选项：
"exceptAfterSingleLine": false（默认）不跳过检查单行类成员后的空行。"exceptAfterSingleLine": true跳过检查单行类成员后的空行。
使用此规则与字符串选项的错误示例：
Open in Playground
/* eslint lines-between-class-members: ["error", "always"]*/
class Foo{
x;
bar(){}
baz(){}
}
/* eslint lines-between-class-members: ["error", "never"]*/
class Foo{
x;
bar(){}
baz(){}
}
使用此规则与字符串选项的正确示例：
Open in Playground
/* eslint lines-between-class-members: ["error", "always"]*/
class Foo{
x;
bar(){}
baz(){}
}
/* eslint lines-between-class-members: ["error", "never"]*/
class Foo{
x;
bar(){}
baz(){}
}
使用此规则与对象选项的正确示例：
Open in Playground
/* eslint lines-between-class-members: ["error", "always", { "exceptAfterSingleLine": true }]*/
class Foo{
x; // single line class member
bar(){} // single line class member
baz(){
// multi line class member
}
qux(){}
}
何时不用
如果你不想类成员之间有空行，你可以禁用这个规则。
兼容
Related Rules
Version
This rule was introduced in ESLint v4.9.0.