How to use

id

function

in

DocumentReference

flow(function* copyPost(copyId) {
   // @ts-ignore
   const post = yield self.getPost(copyId);

   const newDraftRef = firestore.collection("posts").doc();
   const id = newDraftRef.id;
   const now = moment.now();

   const newPost = {
    id,
    changed: now,
    status: PostStatus.Draft,
    draft: {
     ...post.draft,
     title: `${post.draft.title} (Copy)`,
     changed: now
    }
   };

   // @ts-ignore
   self.posts.set(id, newPost);

   yield newDraftRef.set(newPost);

   return id;
  })

flow(function* saveNewPost(title, text) {
   const newDraftRef = firestore.collection("posts").doc();
   const id = newDraftRef.id;
   const now = moment.now();
   const currentAuthor = self.blog.authors.currentAuthor;

   const newPost = {
    id,
    changed: now,
    status: PostStatus.Draft,
    draft: {
     title: title || "(Untitled)",
     text: text || "",
     changed: now,
     meta: createMeta({
      author: currentAuthor ? currentAuthor.id : ""
     })
    }
   };

   // @ts-ignore
   self.posts.set(id, newPost);

   yield newDraftRef.set(newPost);

   return id;
  })