code: public Map<ChecksumType, String> calculateJavaScriptHashes(byte[] byteArray) throws WssHashException {
          Map<ChecksumType, String> checksums = new EnumMap<>(ChecksumType.class);
          try {
              String fileContent = IOUtils.toString(byteArray, UTF_8);
              ParseResult parseResult = new JavaScriptParser().parse(fileContent);
              if (parseResult != null) {
                  // no comments
                  String contentWithoutComments = parseResult.getContentWithoutComments();
                  if (StringUtils.isNotBlank(contentWithoutComments)) {
                      HashCalculationResult noCommentsSha1 = calculateSuperHash(contentWithoutComments.getBytes());
                      if (noCommentsSha1 != null) {
                          checksums.put(ChecksumType.SHA1_NO_COMMENTS_SUPER_HASH, noCommentsSha1.getFullHash());
                      }
                  }
  
                  // no headers
                  String headerlessContent = parseResult.getContentWithoutHeaderComments();
                  if (StringUtils.isNotBlank(headerlessContent)) {
                      String headerlessChecksum = calculateByteArrayHash(headerlessContent.getBytes(), HashAlgorithm.SHA1);
                      checksums.put(ChecksumType.SHA1_NO_HEADER, headerlessChecksum);
                  }
              }
          } catch (Exception e) {
              throw new WssHashException("Error calculating JavaScript hash: "+ e.getMessage());
          }
          return checksums;
      }
docs: Removes all JavaScript header comments from the file and calculates SHA-1 checksum.
  
  @param byteArray to calculate
  @return Calculated SHA-1 for the given file.