// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import * as dntShim from "../../../../_dnt.shims.js";


import { type BufReader } from "./buf_reader.js";

/**
 * Read big endian 16bit short from BufReader
 * @param buf
 */
export async function readShort(buf: BufReader): Promise<number | null> {
  const high = await buf.readByte();
  if (high === null) return null;
  const low = await buf.readByte();
  if (low === null) throw new dntShim.Deno.errors.UnexpectedEof();
  return (high << 8) | low;
}