feat: refactored server to use ts and improved folder structure

server/src/helpers/paths.ts

@@ -0,0 +1,4 @@
+import path from 'path'
+
+export const ROOT_DIR = path.resolve('../')
+export const WEBUI_DIR = path.join(ROOT_DIR, 'webui', 'public')

server/src/helpers/port.ts

@@ -0,0 +1,22 @@
+import { Port } from '../types'
+
+/**
+ * Normalize a port into a number, string, or false.
+ *
+ * @since	0.0.0
+ */
+export function normalizePort(portString: string): Port {
+	const port = parseInt(portString, 10)
+
+	if (isNaN(port)) {
+		// named pipe
+		return portString
+	}
+
+	if (port >= 0) {
+		// port number
+		return port
+	}
+
+	return false
+}

server/src/helpers/server-callbacks.ts

@@ -0,0 +1,47 @@
+import http from 'http'
+import type { Debugger } from 'debug'
+
+/**
+ * Event listener for HTTP server "error" event.
+ *
+ * @since	0.0.0
+ */
+export function getErrorCb(port: number | string | boolean) {
+	return (error: any) => {
+		if (error.syscall !== 'listen') {
+			throw error
+		}
+
+		const bind = typeof port === 'string' ? 'Pipe ' + port : 'Port ' + port
+
+		// handle specific listen errors with friendly messages
+		switch (error.code) {
+			case 'EACCES': {
+				console.error(bind + ' requires elevated privileges')
+				process.exit(1)
+			}
+			case 'EADDRINUSE': {
+				console.error(bind + ' is already in use')
+				process.exit(1)
+			}
+			default:
+				throw error
+		}
+	}
+}
+
+/**
+ * Event listener for HTTP server "listening" event.
+ *
+ * @since	0.0.0
+ */
+export function getListeningCb(server: http.Server, debug: Debugger) {
+	return () => {
+		const addr = server.address()
+
+		if (addr) {
+			const bind = typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr.port
+			debug('Listening on ' + bind)
+		}
+	}
+}