grouped-accessor-pairs

在对象字面量和类中需要分组访问器对

相同属性的 getter 和 setter 不一定必须彼此相邻定义。

例如，以下语句将创建相同的对象：

var o = {
    get a() {
        return this.val;
    },
    set a(value) {
        this.val = value;
    },
    b: 1
};

var o = {
    get a() {
        return this.val;
    },
    b: 1,
    set a(value) {
        this.val = value;
    }
};

虽然允许在对象或类定义中的任何位置为 getter 或 setter 定义对，但将访问器函数分组为同一属性被认为是最佳实践。

换句话说，如果一个属性有一个 getter 和一个 setter，那么 setter 应该在 getter 之后定义，反之亦然。

规则详情

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53qbJC6xNcTpfWzDOxH3FbxQniXPcALMzc0838bz9bxwfaPpKG0ZV7pRGyxgA1aA

/*eslint grouped-accessor-pairs: "error"*/

var foo = {
    get a() {
        return this.val;
    },
    b: 1,
    set a(value) {
        this.val = value;
    }
};

var bar = {
    set b(value) {
        this.val = value;
    },
    a: 1,
    get b() {
        return this.val;
    }
}

class Foo {
    set a(value) {
        this.val = value;
    }
    b(){}
    get a() {
        return this.val;
    }
}

const Bar = class {
    static get a() {
        return this.val;
    }
    b(){}
    static set a(value) {
        this.val = value;
    }
}

x8vS/D2xVZSiiHLs1PwUl6/TVEXV0uticb8dGcMm9rxiwxh8yRqnjwkHP0i+2Pam

/*eslint grouped-accessor-pairs: "error"*/

var foo = {
    get a() {
        return this.val;
    },
    set a(value) {
        this.val = value;
    },
    b: 1
};

var bar = {
    set b(value) {
        this.val = value;
    },
    get b() {
        return this.val;
    },
    a: 1
}

class Foo {
    set a(value) {
        this.val = value;
    }
    get a() {
        return this.val;
    }
    b(){}
}

const Bar = class {
    static get a() {
        return this.val;
    }
    static set a(value) {
        this.val = value;
    }
    b(){}
}

选项

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getBeforeSet

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/*eslint grouped-accessor-pairs: ["error", "getBeforeSet"]*/

var foo = {
    set a(value) {
        this.val = value;
    },
    get a() {
        return this.val;
    }
};

class Foo {
    set a(value) {
        this.val = value;
    }
    get a() {
        return this.val;
    }
}

const Bar = class {
    static set a(value) {
        this.val = value;
    }
    static get a() {
        return this.val;
    }
}

5nEv4RCYCaBiSjFxJ4F/mGLf5JF4w2nOuic6PF7t+/g6mqTc1hJhNXwdq+0KgB0oi48IQPWGuHPwrFYROM1u709tzy4rAl6O/XTLXJRcZH0=

/*eslint grouped-accessor-pairs: ["error", "getBeforeSet"]*/

var foo = {
    get a() {
        return this.val;
    },
    set a(value) {
        this.val = value;
    }
};

class Foo {
    get a() {
        return this.val;
    }
    set a(value) {
        this.val = value;
    }
}

const Bar = class {
    static get a() {
        return this.val;
    }
    static set a(value) {
        this.val = value;
    }
}

setBeforeGet

5nEv4RCYCaBiSjFxJ4F/mE/OL9wXqHR6TScim/cNiv1VcfFTHhv3hPxccpZwrbbrXO9pKvn31+NF8rfjDWG+C2ye7ulcsQFIGKURKjfUIKs=

/*eslint grouped-accessor-pairs: ["error", "setBeforeGet"]*/

var foo = {
    get a() {
        return this.val;
    },
    set a(value) {
        this.val = value;
    }
};

class Foo {
    get a() {
        return this.val;
    }
    set a(value) {
        this.val = value;
    }
}

const Bar = class {
    static get a() {
        return this.val;
    }
    static set a(value) {
        this.val = value;
    }
}

5nEv4RCYCaBiSjFxJ4F/mE/OL9wXqHR6TScim/cNiv1VcfFTHhv3hPxccpZwrbbr4H6Ry9QpNTAipu5PnxJL9HdeKhkUG/Z2zUGA3Ze0V5Q=

/*eslint grouped-accessor-pairs: ["error", "setBeforeGet"]*/

var foo = {
    set a(value) {
        this.val = value;
    },
    get a() {
        return this.val;
    }
};

class Foo {
    set a(value) {
        this.val = value;
    }
    get a() {
        return this.val;
    }
}

const Bar = class {
    static set a(value) {
        this.val = value;
    }
    static get a() {
        return this.val;
    }
}

已知限制

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/*eslint grouped-accessor-pairs: "error"*/

var a = 1;

// false warning (false positive)
var foo = {
    get [a++]() {
        return this.val;
    },
    b: 1,
    set [a++](value) {
        this.val = value;
    }
};

// missed warning (false negative)
var bar = {
    get [++a]() {
        return this.val;
    },
    b: 1,
    set [a](value) {
        this.val = value;
    }
};

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