`isConstructor`

Based on the TC39 Function.isCallable() / Function.isConstructor() proposal, the isConstructor() can determine if value is a constructor.

import { isConstructor } from "@aedart/support/reflections";

isConstructor(null); // false
isConstructor({}); // false
isConstructor([]); // false
isConstructor(() => {}); // false

isConstructor(function() {}); // true
isConstructor(class {}); // true

// Built-in objects
isConstructor(Array); // true
isConstructor(String); // true
isConstructor(Number); // true
isConstructor(Date); // true
isConstructor(Map); // true
isConstructor(Set); // true
// ...etc

Acknowledgement

The source code of the above shown methods is heavily inspired by Denis Pushkarev's Core-js implementation of the Function.isCallable / Function.isConstructor proposal (License MIT).