Live-update line charts with new data

lib/liveupdate.js

@@ -0,0 +1,13 @@
+export function subscribe(timeseries, callback) {
+  const socket = new WebSocket('ws://openmct.cbrp3.c-base.org:8082/');
+  socket.addEventListener('open', () => {
+    timeseries.forEach((series) => {
+      socket.send(`subscribe ${series}`);
+    });
+  });
+  socket.addEventListener('message', (msg) => {
+    callback(JSON.parse(msg.data));
+  });
+}
+
+export default subscribe;