Buffer.from equivalent in deno?

  const signerPvtKey = Buffer.from(
    // process.env.PVT_KEY
    PVT_KEY,
    "hex"
  );

//Node.js
Buffer.from('48656c6c6f20576f726c64', 'hex');
//Deno
import {decodeString} from "https://deno.land/std/encoding/hex.ts";
new Buffer(decodeString('48656c6c6f20576f726c64'));

import { Buffer } from "https://deno.land/std/io/mod.ts";
// import {Buffer} from "https://deno.land/std/io/buffer.ts";
import {decodeHex} from "https://deno.land/std/encoding/hex.ts";