enforce a maximum number of classes per file (max-classes-per-file)

强制每个文件中包含的的类的最大数量 (max-classes-per-file)

Files containing multiple classes can often result in a less navigable and poorly structured codebase. Best practice is to keep each file limited to a single responsibility.

包含多个类的文件通常会导致导航性较差以及结构不良的代码库。最佳实践是保持每个文件限制于单一的责任。

Rule Details

This rule enforces that each file may contain only a particular number of classes and no more.

这个规则强制每个文件只能包含一个特定数量的类，没有更多。

Examples of incorrect code for this rule:

错误 代码示例：

/*eslint max-classes-per-file: "error"*/

class Foo {}
class Bar {}

Examples of correct code for this rule:

正确 代码示例：

/*eslint max-classes-per-file: "error"*/

class Foo {}

Options

This rule has a numeric option (defaulted to 1) to specify the maximum number of classes.

此规则有一个数值选项（默认为1）来指定类的最大数量。

For example:

例如:

{
    "max-classes-per-file": ["error", 1]
}

Examples of correct code for this rule with the numeric option set to 2:

数值选项设置为 2 的 正确 代码示例：

/* eslint max-classes-per-file: ["error", 2] */

class Foo {}
class Bar {}

Version

This rule was introduced in ESLint 5.0.0-alpha.3.

该规则在 ESLint 5.0.0-alpha.3 中被引入。

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