compile typescript in chatbot - node.js

Question

I'm trying to create a chatbot I'm following a tutorial on youtube
https://www.youtube.com/watch?v=cYuWse7GB9E
However at the end of the tutorial you build the typescript using the command Ctrl + Shift + b
my tsconfig.json file looks like this
{
"conpileOnSave":true,
"compileOptions":{
"module":"commonjs",
"target":"es6",
"sourceMap":true,
"declaration":false,
"removeComments":true,
"outDir":"./dist",
"allowJs":true
},
"files":[
"./lib/types.ts",
"./lib/app.ts"
]
}
and my app.ts file looks like this
import { BotFrameworkAdapter, MemoryStorage,ConversationState } from "botbuilder";
import * as restify from "restify";
//import { ConfState } from "./types";
let server = restify.createServer();
server.listen(process.env.port || process.env.PORT || 3978, () => {
console.log(`${server.name} listening on ${server.url}`);
})
const adaptor = new BotFrameworkAdapter({
appId: process.env.MICROSOFT_APP_ID,
appPassword: process.env.MICROSOFT_APP_PASSWORD
});
let conversationState;
const memoryStorage = new MemoryStorage();
conversationState = new ConversationState(memoryStorage);
//const conversationState = new ConversationState(new MemoryStorage());
adaptor.use(conversationState);
server.post("/api/messages",(req,res) => {
adaptor.processActivity(req,res,async(context) =>{
if(context.activity.type === "message") {
const state = conversationState.get(context);
await context.sendActivity(`you said ${context.activity.text}`);
} else {
await context.sendActivity(`${context.activity.type} event detected`);
}
})
});
my problem is that it builds, well doesn't have any errors but nothing is ever built into the "dist" folder so when I then run "node server.js" which contains this code
module.exports = require("./dist/app");
It throws an error
internal/modules/cjs/loader.js:638
throw err;
^
Error: Cannot find module './dist/app'
Has anyone any idea what is wrong. I have changed the permissions on the dist folder to full but still nothing.
thanks
my complete source code can be found here
https://github.com/andrewslaughter/chatbot/tree/master/video2