Function hasInvalidHashBang

tools/lint-sh.mjs:48–55

(fd)

const expectedHashBang = Buffer.from('#!/bin/sh\n');
async function hasInvalidHashBang(fd) {
  const { length } = expectedHashBang;

  const actual = Buffer.allocUnsafe(length);
  await fd.read(actual, 0, length, 0);

  return Buffer.compare(actual, expectedHashBang);
}

async function checkFiles(...files) {
  const flags = FIX_MODE_ENABLED ? 'r+' : 'r';