TypeScript中的抽象构造函数类型 [英] Abstract constructor type in TypeScript

问题描述

TypeScript中非抽象类（非抽象构造函数）的类型签名如下：

The type signature for a non-abstract class (non-abstract constructor function) in TypeScript is the following:

declare type ConstructorFunction = new (...args: any[]) => any;

这也称为 newable 类型。但是，我需要一个 abstract 类的类型签名（抽象构造函数）。我知道可以将其定义为具有 Function 类型，但是 way 范围太广。

This is also called a newable type. However, I need a type signature for an abstract class (abstract constructor function). I understand it can be defined as having the type Function, but that is way too broad. Isn't there a more precise alternative?

编辑：

为阐明我的意思，以下小片段演示了抽象构造函数和非抽象构造函数之间的区别：

To clarify what I mean, the following little snippet demonstrates the difference between an abstract constructor and a non-abstract constructor:

declare type ConstructorFunction = new (...args: any[]) => any;

abstract class Utilities {
    ...
}

var UtilityClass: ConstructorFunction = Utilities; // Error.

类型'typeof Utilities'不能分配给'new（。 ..args：any []）=> any'。

Type 'typeof Utilities' is not assignable to type 'new (...args: any[]) => any'.

不能将抽象构造函数类型分配给非抽象构造函数类型。 / p>

Cannot assign an abstract constructor type to a non-abstract constructor type.

推荐答案

我自己只是在努力解决类似的问题，

Was just struggling with a similar problem myself, and this seems to work for me:

type Constructor<T> = Function & { prototype: T }

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