But in TypeScript, this generates an error: 但是在TypeScript中，这会产生一个错误：

The property 'prop' does not exist on value of type '{}' 类型“ {}”的值不存在属性“ prop”

How am I supposed to assign any new property to an object in TypeScript? 我应该如何在TypeScript中为对象分配任何新属性？

参考： https://stackoom.com/question/RkGB/如何在TypeScript中为对象动态分配属性

Although the compiler complains it should still output it as you require. 尽管编译器抱怨它仍应按您的要求输出。 However, this will work. 但是，这将起作用。