[add] webapp on localhost:10501 (default)

src/lib/webserver.ts

@@ -0,0 +1,18 @@
+import * as express from "express";
+import {Watcher} from "./types/state";
+import * as path from "path";
+import * as cors from "cors";
+
+export function webappServe(watchers: Watcher[], host = 'localhost', port = 10501) {
+  const webapp = express()
+
+  webapp.use(cors())
+
+  webapp.get('/status', (req, res) => {
+    res.send(watchers)
+  })
+
+  webapp.use('/', express.static(path.join(__dirname, '../../dist/')))
+
+  webapp.listen(port, host, () => console.log(`webserver listening at http://${host}:${port}`))
+}