The isSameEntry() method of the FileSystemHandle interface compares two handles to see if the associated entries (either a file or directory) match.

FileSystemHandle

The FileSystemHandle to match against the handle on which the method is invoked.

A Promise that fulfills with a Boolean.

The following function compares a single entry with an array of entries, and returns a new array with any matching entries removed.

function removeMatches(fileEntry, entriesArr) {
  let newArr = entriesArr.filter((entry) => !fileEntry.isSameEntry(entry));

  return newArr;
}

• File System API
• The File System Access API: simplifying access to local files