no-class-assign

Disallow reassigning class members

✅

The "extends": "eslint:recommended" property in a configuration file enables this rule

ClassDeclaration 创建了一个可修改的变量。

/*eslint-env es6*/

class A { }
A = 0;
1
2
3
4

但在大多数情况下，这种修改是一个错误。

规则细节

这条规则的目的是标记修改类声明的变量。

使用此规则的错误示例：

Open in Playground

/*eslint no-class-assign: "error"*/
/*eslint-env es6*/

class A { }
A = 0;
1
2
3
4
5

Open in Playground

/*eslint no-class-assign: "error"*/
/*eslint-env es6*/

A = 0;
class A { }
1
2
3
4
5

Open in Playground

/*eslint no-class-assign: "error"*/
/*eslint-env es6*/

class A {
    b() {
        A = 0;
    }
}
1
2
3
4
5
6
7
8

Open in Playground

/*eslint no-class-assign: "error"*/
/*eslint-env es6*/

let A = class A {
    b() {
        A = 0;
        // `let A` is shadowed by the class name.
    }
}
1
2
3
4
5
6
7
8
9

使用此规则的正确示例：

Open in Playground

/*eslint no-class-assign: "error"*/
/*eslint-env es6*/

let A = class A { }
A = 0; // A is a variable.
1
2
3
4
5

Open in Playground

/*eslint no-class-assign: "error"*/
/*eslint-env es6*/

let A = class {
    b() {
        A = 0; // A is a variable.
    }
}
1
2
3
4
5
6
7
8

Open in Playground

/*eslint no-class-assign: 2*/
/*eslint-env es6*/

class A {
    b(A) {
        A = 0; // A is a parameter.
    }
}
1
2
3
4
5
6
7
8

何时不用

如果你不希望被通知修改类声明的变量，你可以安全地禁用这个规则。

Version

This rule was introduced in ESLint v1.0.0-rc-1.

Resources

编辑此页