@uppy/provider-views/lib/utils/PartialTreeUtils/getNumberOfSelectedFiles.js

View library for Uppy remote provider plugins.

/**
 * We're interested in all 'checked' leaves of this tree,
 * but we don't yet know how many files there are inside of each checked folder.
 * `getNumberOfSelectedFiles()` returns the most intuitive number we can show to the user
 * in this situation.
 */
const getNumberOfSelectedFiles = partialTree => {
  const checkedLeaves = partialTree.filter(item => {
    if (item.type === 'file' && item.status === 'checked') {
      return true;
    }
    if (item.type === 'folder' && item.status === 'checked') {
      const doesItHaveChildren = partialTree.some(i => i.type !== 'root' && i.parentId === item.id);
      return !doesItHaveChildren;
    }
    return false;
  });
  return checkedLeaves.length;
};
export default getNumberOfSelectedFiles;