isChildClass | /util/mod.ts | polkadot@0.2.19

function isChildClass

import { isChildClass } from "https://deno.land/x/polkadot@0.2.19/util/mod.ts";

isChildClass<P extends Constructor>(Parent: P, Child?: Constructor | null | unknown): Child is P

Examples

import { isChildClass } from 'https://deno.land/x/polkadot@0.2.19/util/mod.ts';

console.log('isChildClass', isChildClass(BN, BN); // => true
console.log('isChildClass', isChildClass(BN, Uint8Array); // => false

Type Parameters

P extends Constructor

Parameters

Parent: P

optional

Child: Constructor | null | unknown

Returns

Child is P