Fix/various (#162)

* Fix #156 entity default offset

* Fix "cannot parse undefined" error in the UI when the last visible datapoint is unavailable/unknown/null/undefined

* Downgrade plotly.js to 2.14.0 due to trace ghosting. Fixes #158.

* Bump version

Author: dbuezas

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "plotly-graph-card",
-  "version": "1.8.3",
+  "version": "1.8.4",
   "description": "",
   "main": "index.js",
   "scripts": {
@@ -25,6 +25,6 @@
     "date-fns": "^2.28.0",
     "deepmerge": "^4.2.2",
     "lodash": "^4.17.21",
-    "plotly.js": "^2.16.5"
+    "plotly.js": "^2.14.0"
   }
 }

package.json

@@ -57,7 +57,7 @@ function extendLastDatapointToPresent(
   offset: number
 ) {
   if (xs.length === 0) return;
-  const last = JSON.parse(JSON.stringify(ys[ys.length - 1]));
+  const last = ys[ys.length - 1];
   xs.push(new Date(Date.now() + offset));
   ys.push(last);
 }
@@ -407,7 +407,7 @@ export class PlotlyGraph extends HTMLElement {
           config.defaults?.entity,
           entityIn
         );
-        entity.offset = parseTimeDuration(entityIn.offset ?? "0s");
+        entity.offset = parseTimeDuration(entity.offset ?? "0s");
         if (entity.lambda) {
           entity.lambda = window.eval(entity.lambda);
         }