test-whiteboard/libs/mixin.js

https://gitlab.gridsum.com/gov_law_tech/FrontEnd/whiteboard

function copyProperties(target, source) {
    for (let key of Reflect.ownKeys(source)) {
        if (key !== "constructor" && key !== "prototype" && key !== "name") {
            let desc = Object.getOwnPropertyDescriptor(source, key);
            Object.defineProperty(target, key, desc);
        }
    }
}


var mixin = function (...mixins) {
    class Mix {

    }
    // 以编程方式给Mix类添加
    // mixins的所有方法和访问器
    for (let mixin of mixins) {
        copyProperties(Mix, mixin);
        copyProperties(Mix.prototype, mixin.prototype);
    }
    return Mix;
}

export  default  mixin;