如何将打字稿 T 限制为仅原始对象 [英] How to restrict the typescript T to be only primitive object

问题描述

昨天我问了这个问题如何限制打字稿 T 为唯一的复合对象
现在我想知道如何做相反的事情?

Yesterday I ask this question How to restrict the typescript T to be only camplex object
Now I wonder how to actually do the opposite?

class abstract MyClass<T> { }

我只想允许原始类型(字符串、布尔值等)，例如:

I want only allow primitive types (string, boolean, etc) like:

class MyOtherClass extends MyClass<string> { } //<-- allowed

class MyOtherClass extends MyClass<IInterface> { } //<-- not allowed

实现这一目标的最佳方法是什么?

What is the best way to achieve that?

推荐答案

您可以创建自定义原始类型，您希望允许该类型

You can create custom primitive type, which would you like to allow

type IPrimitiveTypes = string | number | boolean;

abstract class MyClass<T extends IPrimitiveTypes> { }

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