fix: catch rejected promises from Yeelight lib in State node

Author: mattmattmatt

src/YeeLightNodeState.js

@@ -11,17 +11,32 @@ export default function YeeLightNodeState(RED) {
 
         // on, hex, bri, hue, sat, duration
         const onInput = msg => {
-            node.serverConfig.yeelight.sync().then(state => {
-                msg.payload = sanitizeState(state);
-                // only send message if new information or if requested by input
-                if (
-                    JSON.stringify(msg.payload) !== JSON.stringify(lastSentState) ||
-                    Object.keys(msg).length > 1
-                ) {
-                    node.send(msg);
-                    lastSentState = msg.payload;
-                }
-            });
+            node.serverConfig.yeelight
+                .sync()
+                .then(state => {
+                    msg.payload = sanitizeState(state);
+                    // only send message if new information or if requested by input
+                    if (
+                        JSON.stringify(msg.payload) !== JSON.stringify(lastSentState) ||
+                        Object.keys(msg).length > 1
+                    ) {
+                        node.send(msg);
+                        lastSentState = msg.payload;
+                    }
+                })
+                .catch(e => {
+                    if (e.message === 'timeout') {
+                        e.code = 'timeout';
+                        e.message = 'Local timeout in "Yeelight.command" execution';
+                    }
+                    node.log('An error occured while syncing or setting a new value');
+                    console.error(e);
+                    node.status({
+                        fill: 'red',
+                        shape: 'ring',
+                        text: `Command send error: ${e.code}`,
+                    });
+                });
         };
 
         (function init() {