detect-file-encoding-and-language/src/components/checkByteOrderMark.js

Charset Detector - Detect the encoding and language of text files - Use it in the browser, with Node.js, or via CLI

const byteOrderMarks = require("../config/byteOrderMarkObject.js");

module.exports = (uInt8Start) => {
  for (const element of byteOrderMarks) {
    if (element.regex.test(uInt8Start)) return element.encoding;
  }

  return null;
};