NodeJS: Convert any text file on disk encoding to UTF-8

convert-to-utf8.js

var 
  fs = require('fs'),
  charsetDetector = require('node-icu-charset-detector'),
  iconvlite = require('iconv-lite');

/* Having different encodings
 * on text files in a git repo
 * but need to serve always on 
 * standard 'utf-8'
 */
function getFileContentsInUTF8(file_path) {
  var content = fs.readFileSync(file_path);
  var original_charset = charsetDetector.detectCharset(content);
  var jsString = iconvlite.decode(content, original_charset.toString());
  return jsString;
}