@writ/utils/object-proxy.js

My tool kit

let rules = {
    get(target, key) {
        invariant(key, 'get');
        return target[key];
    },
    set(target, key, value) {
        invariant(key, 'set');
        target[key] = value;
        return true;
    },
    has(target, key) {
        if (key[0] === '_') {
            return false;
        }

        return key in target;
    },
    deleteProperty(target, key) {
        invariant(key, 'delete');
        return true;
    },
    getOwnPropertyDescriptor(target, key) {
        if (key[0] === '_') {
            return;
        }
        return Object.getOwnPropertyDescriptor(target, key);
    },
    getPrototypeOf() {
        return null;
    },
    isExtensible: function () {
        return false;
    },
    ownKeys(target) {
        return Reflect.ownKeys(target).filter(key => key[0] !== '_');
    },
    preventExtensions: function (target) {
        Object.preventExtensions(target);
        return true;
    },
    setPrototypeOf(target, proto) {
        throw new Error(`禁止修改${target}的${proto}`);
    }
};

// 禁止操作内部属性
function invariant(key, action) {
    if (key[0] === '_') {
        throw new Error(`禁止对内部属性 [[${key}]] 进行 "${action}" 操作！`);
    }
}

function defineBlockObject(object, block) {
    block = Object.assign({}, rules, block);
    return new Proxy(object, block);
}

module.exports = defineBlockObject;