Constructor

Syntax

type Constructor<T = unknown>

Example

import { Constructor } from 'potence';

function checkType<T>(object: unknown, constructor: Constructor<T>): object is T {
    return object instanceof constructor;
}

let value: unknown = new Date();

if (checkType(value, Date)) {
    value.setDate(5);   // no error
    // ...
}

Remarks

Note that constructors of this type cannot be instantiated (i.e. you cannot call new ... on them). If you’d like to type an instantiable constructor, see the related type Instantiable, which represents a subset of Constructor types that can be instantiated (i.e. that are not abstract).

Every Instantiable is a Constructor, but not every Constructor is an Instantiable.