Files with autogenerated id in their names are always removed then added about bundlewatch HOT 4 OPEN

Looks like the option normalizeFilenames can resolve this by removing the auto generated name. But when I use the option, only the files having that generated id get reported.

All other files get lost in the process and are reported with an empty string instead

PASS  : 184KB < 250KB (brotli)

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The problem seems to be this line

As if there's no group being found, split returns the whole path

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Making my group optional in my regex kind of fixes the issue... But it makes the split function returning an undefined value and we do a replace on an undefined (my files don't have undefined so it's alright I guess).

Might be worth it to replace the split with a match instead and really check the results.

Something along these lines maybe

let normalizedFilePath = filePath;
if (normalizeFilenames) {
  const match = filePath.match(normalizeFilenames);
  if (match != null) {
    const [, matches] = match;
    normalizedFilePath = matches.reduce((acc, m) => acc.replace(m, ''), filePath);
  }
}

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Thanks for reporting this. This is definitely annoying when all your files aren't matching with normalizeFilenames, I encountered this recently and I had to do like you said, use an optional group.

Would you like to send a pull request with tests? I will be happy to review it.

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