es6-ts

package.json

{
  "name": "es6-ts",
  "version": "1.0.0",
  "description": "",
  "main": "server.js",
  "scripts": {
    "tsc": "tsc",
    "start": "npm run tsc && node build/server.js",
    "start-dev": "ts-node-dev --respawn --transpileOnly ./src/server.ts",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@types/express": "^4.16.1",
    "express": "^4.17.0",
    "ts-node-dev": "^1.0.0-pre.39",
    "typescript": "^3.4.5"
  }
}

server.ts

import express = require('express');

// Create a new express application instance
const app: express.Application = express();

app.get('/', function (req, res) {
  res.send('Hello World!');
});

app.listen(3000, function () {
  console.log('Example app listening on port 3000!');
});

tsconfig.json

{
  "compilerOptions": {
    "target": "es6",
    "module": "commonjs",
    "esModuleInterop": true,
    "alwaysStrict": true,
    "noImplicitAny": false,
    "noImplicitReturns": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "outDir": "build"
  },
  "include": [
    "src/**/*.ts"
  ]
}