let express = require("express"); let morgan = require("morgan"); let indexRoute = require("./routes/index"); let notFoundRoute = require("./routes/notFound"); let errorRoute = require("./routes/error"); let app = express(); app.use(morgan("dev")) .use(express.static("public")) .set("view engine", "pug") .use("/", indexRoute) .use(notFoundRoute) .use(errorRoute) .listen(process.env.PORT || 8080);