Create tree tree param type

[Blakeinstein]

const createBlobForFile = (octo: Octokit, org: string, repo: string) => async (
  filePath: string
) => {
  const content = await getFileAsUTF8(filePath)
  const blobData = await octo.git.createBlob({
    owner: org,
    repo,
    content,
    encoding: 'utf-8',
  })
  return blobData.data
}

const createNewTree = async (
  octo: Octokit,
  owner: string,
  repo: string,
  blobs: Octokit.GitCreateBlobResponse[],
  paths: string[],
  parentTreeSha: string
) => {
  const tree = blobs.map(({ sha }, index) => ({
    path: paths[index],
    mode: `100644`,
    type: `blob`,
    sha,
  })) as Octokit.GitCreateTreeParamsTree[]
  const { data } = await octo.git.createTree({
    owner,
    repo,
    tree,
    base_tree: parentTreeSha,
  })
  return data
}

  const filesPaths = await glob(coursePath)
  const filesBlobs = await Promise.all(filesPaths.map(createBlobForFile(octo, org, repo)))
  const pathsForBlobs = filesPaths.map(fullPath => path.relative(coursePath, fullPath))
  const newTree = await createNewTree(
    octo,
    org,
    repo,
    filesBlobs,
    pathsForBlobs,
    currentCommit.treeSha
  )

Was a piece of working code in v16. As types are no longer available I am unable to get rid of ts errors,

1. Since I cant case Tree to CreateTreeParamsTree, I get a type cast error

Type 'string' is not assignable to type '"100644" | "100755" | "040000" | "160000" | "120000" | undefined'.

2. The Blob return type is not available anymore, and I cant extract { sha } in my map code, if i add a type
   type Blob = ReturnType<Octokit['git']['createBlob']> as there is a data field that I am unable to specify.

Is there a resolution for this?