Fix history bug with null values

keller-mark · Jan 5, 2019 · 5d6e1bb · 5d6e1bb
1 parent c86854f
commit 5d6e1bb
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vue-declarative-plots",
-  "version": "1.2.14",
+  "version": "1.2.15",
   "private": false,
   "scripts": {
     "serve": "vue-cli-service serve --open ./examples-src/index.js",

diff --git a/src/history/HistoryStack.js b/src/history/HistoryStack.js
@@ -165,7 +165,7 @@ export default class HistoryStack {
      */
     parseParams(params) {
         return params.map((p) => {
-            if(typeof p === "object") {
+            if(p !== null && p !== undefined && typeof p === "object") {
                 if(p.hasOwnProperty(VDP_COMPUTED_PARAM)) {
                     // can assume that this object represents a call to a "getter": getScale, getStack, etc...
                     console.assert(typeof p[GETTER_FUNCTION_KEY] === "number");