sock.on('canvas:create', handleErrors(authCheck(async (req: Protocol.CreateCanvasRequest, cb: Protocol.Callback<Protocol.CreateCanvasResponse>) => {
     const id = cuid();
     await dbConn.createCanvas(id);
     cb({
         success: true,
         id
     });
 })));

 (title: string) => ({
   type: ADD_TODO,
   payload: {
     id: cuid(),
     title: title,
     completed: false,
   },
 })

    .concatMap((action) => { // action is type: { type: "ADD_TODO"; payload: string; }
      const toast = { id: cuid(), text: action.payload.title };

      const addToast$ = Observable.of(toastsActions.addToast(toast));
      const removeToast$ = Observable.of(toastsActions.removeToast(toast.id))
        .delay(TOAST_LIFETIME);

      return addToast$.concat(removeToast$);
    });

 /**
  * Adds a Page object to the internal index.
  *
  * @param {Page} page
  * @returns {Promise<IndexingReport>}
  */
 public addDocument(page: Page): Promise<IndexingReport> {
     this.index.addDoc({
         id: page.id,
         title: page.title,
         info: page.info,
         url: page.url
     });
     return Promise.resolve(
         {
             id: cuid(),
             docId: page.id,
             succeeded: true,
             timeStamp: new Date().toString()
         } as IndexingReport);
 }

app.post( '/api/subscribe', (req, resp, done) => {
  let info  = {
    name: escapeFormField( req.body.name ),
    email: escapeFormField( req.body.email ),
    origin: escapeFormField( req.body.origin ),
    lang: escapeFormField( req.body.lang ),
    type: escapeFormField( req.body.type ),
    id: cuid()
  };

  fs.appendFile('subscribers.txt', JSON.stringify( info )+',\n', function (err) {
    sendMail( "book-sample-request.pt.html", info, (err) => {
      if ( !err ) {
        resp.status(200).json({success: "Email sent"});
      } else {
        resp.status(500).json({message: "Unable to send email:", error: err });
      }

      done();
    } )
  });
} );

export function generateToken () {
  const token = cuid().substr(1) + cuid().substr(1) // substr: get rid of the starting `c`
  return token.toUpperCase()
}

 _.forOwn(iterable, (value, key) => {
      result.push({key: key, value: value, id: cuid() });
 });

 public static generateToken() {
   const token = cuid().substr(1) + cuid().substr(1) // substr: get rid of the starting `c`
   return token.toUpperCase()
 }