Function getEntries

packages/react-aria/src/dnd/utils.ts:334–356

(
  item: FileSystemDirectoryEntry
)

}

async function* getEntries(
  item: FileSystemDirectoryEntry
): AsyncIterable<FileDropItem | DirectoryDropItem> {
  let reader = item.createReader();

  // We must call readEntries repeatedly because there may be a limit to the
  // number of entries that are returned at once.
  let entries: FileSystemEntry[];
  do {
    entries = await new Promise((resolve, reject) => {
      reader.readEntries(resolve, reject);
    });

    for (let entry of entries) {
      if (entry.isFile) {
        let file = await getEntryFile(entry as FileSystemFileEntry);
        yield createFileItem(file);
      } else if (entry.isDirectory) {
        yield createDirectoryItem(entry);
      }
    }
  } while (entries.length > 0);
}

function getEntryFile(entry: FileSystemFileEntry): Promise<File> {
  return new Promise((resolve, reject) => entry.file(resolve, reject));