Future<List<Entry>> readEntries() { var completer = new Completer<List<Entry>>(); _readEntries((values) { values.forEach((value) { applyExtension('Entry', value); Entry entry = value as Entry; if (entry.isFile) applyExtension('FileEntry', entry); else if (entry.isDirectory) applyExtension('DirectoryEntry', entry); }); completer.complete(new List<Entry>.from(values)); }, (error) { completer.completeError(error); }); return completer.future; }
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https://api.dart.dev/stable/2.5.0/dart-html/DirectoryReader/readEntries.html