import { compactFromU8a } from "https://deno.land/x/polkadot@0.2.19/util/mod.ts";
Examples
import { compactFromU8a } from 'https://deno.land/x/polkadot@0.2.19/util/mod.ts';
const [offset, length] = compactFromU8a(new Uint8Array([254, 255, 3, 0]));
console.log('value offset=', offset, 'length=', length); // 4, 0xffff