Move folder to Shared Drive (AppsScript)

Code.gs

const FOLDER_ID_TO_MOVE = 'FOLDER ID GOES HERE'
const DESTINATION_FOLDER_ID = 'FOLDER ID GOES HERE'

function main() {
  const folderToMove = DriveApp.getFolderById(FOLDER_ID_TO_MOVE)
  const newParentFolder = DriveApp.getFolderById(DESTINATION_FOLDER_ID)
  moveFolder(folderToMove, newParentFolder)
}

function moveFolder(folderToMove, newParentFolder) {
  // Create destination folder (or reuse if one with same name exists)
  const folderName = folderToMove.getName()
  const existingFoldersWithThisName = newParentFolder.getFoldersByName(folderName)
  const newFolder = existingFoldersWithThisName.hasNext()
    ? existingFoldersWithThisName.next()
    : newParentFolder.createFolder(folderToMove.getName())

  // Move all child files
  const oldChildFiles = folderToMove.getFiles()
  while (oldChildFiles.hasNext()) {
    const childFile = oldChildFiles.next()
    childFile.moveTo(newFolder)
  }

  // Recurse through all child folders
  const oldChildFolders = folderToMove.getFolders()
  while (oldChildFolders.hasNext()) {
    const childFolder = oldChildFolders.next()
    moveFolder(childFolder, newFolder)
  }

  // Delete original folder (now empty)
  folderToMove.setTrashed(true)
}