I am looking to develop a function that accepts a class as a parameter:
const mixin = (traits: Object) =>
(baseClass: class) => { // Which type should be specified here?
Object.assign(baseClass.prototype, traits)
return baseClass
}
However, I am unsure about the specific type I need to use in order to indicate that I am dealing with a Constructor Function.
If you want to utilize generics in order to return the appropriate class constructor, you can do so by implementing the following method:
const mixin = (traits: any) =>
<T>(baseClass: { new (): T }) => {
Object.assign(baseClass.prototype, traits);
return baseClass;
}
class A {}
let o = mixin({})(A); // The type of o is new () => A
let a = new o(); // The type of a is A
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