Get Prototype Chain From Class Constructor (extends chain)

chain.ts

import { Ctor } from "./types";
import { isConstructor } from "./utils";

export function chain<T>(
  ctor: Ctor<T>,
  prototypes: Set<any> = new Set(),
): Ctor<any>[] | Set<Ctor<any>> {
  if (isConstructor(ctor)) {
    const target = Object.getPrototypeOf(ctor);
    if (!target.name || prototypes.has(target)) return prototypes;
    prototypes.add(target);
    return chain(target, new Set([...prototypes.values()]));
  }

  return [...prototypes.values()];
}

types.ts

export type Ctor<T> = new () => T;

utils.ts

import { Ctor } from "./types";

export function isConstructor<T>(target: unknown): target is Ctor<T> {
  try {
    new (target as any)();
  } catch (_err) {
    return false;
  }
  return true;
}