动态实例化类

案例

// 定义抽象类的接口
interface AbstractClassInterface {
  test(): void;
}

// 抽象类
abstract class AbstractClass implements AbstractClassInterface {
  time: 1;
  abstract test(): void;
}

// 子类1
class Class1 extends AbstractClass implements AbstractClassInterface {
  constructor() {
    super();
  }
  test(): void {
    throw new Error("Method not implemented.");
  }
  test1() {}
}

// 子类2
class Class2 extends AbstractClass implements AbstractClassInterface {
  constructor() {
    super();
  }
  test(): void {
    throw new Error("Method not implemented.");
  }
  test2() {}
}

// 子类3
class Class3 extends AbstractClass implements AbstractClassInterface {
  constructor() {
    super();
  }
  test(): void {
    throw new Error("Method not implemented.");
  }
  test3() {}
}

// 储存未实例化的类
const map = new Map<string, new () => AbstractClassInterface>([
  ["class1", Class1],
  ["class2", Class2],
  ["class3", Class3],
]);

// 读取类
let ClassConstructor = map.get("class2");

// 实例化类
if (ClassConstructor) {
  let instance = new ClassConstructor();
}