Given the following interface
interface Expando { new<T extends {}>(template: T): T & Expando; } I tried to implement this like so
class Expando implements ExpandoConstructor { constructor(template: {}) { } } But I get an error because the constructor definition is incomplete. How do I implement this interface?
You can't have a class implement a constructor interface because this interface describes static properties of the class.
You can do this:
interface ExpandoConstructor { new<T extends {}>(template: T): T & Expando; } class Expando { constructor(template: {}) {} } let ctor = Expando as ExpandoConstructor; let instance = new ctor({}); 