我到处找了找，还是没有找到一个可行的答案。
如何动态地将值从一个对象Map到'this'，而不修改Typescript中的目标？

const bigTodo = {
  name: "aaaaaaa",
  unwantedProperty: "Nooooooo"
}

.....

export class SmallTodo {
    name: string;

    constructor(bigTodo: any){
        _.assign(this,bigTodo)       // NOT working
        _.assignIn(this,bigTodo)     // NOT working
        _.merge(this,bigTodo)        // NOT working
        _.extend(this,bigTodo)       // NOT working
        Object.assign(this, fields); // NOT working

        for (const prop in bigTodo.keys()) { 
          if (this.hasOwnProperty(prop)) {
            this[prop] = bigTodo[prop]; // NOT working not compatible with type 'any'
          }
        }
    }
}

预期结果：

SmallTodo = {
    name: "aaaaaaa"
}

意外结果：

SmallTodo = {
    name: "aaaaaaa",
    unwantedProperty: "Nooooooo"
}