fix: errors on navigation from ordinal bin

on ordinal bins with multiple prompts, two runtime errors were thrown when navigating from last prompt to next stage. both were related to prompt being undefined. this fix adds optional chaining to evaluate prompt.id and prompt.bucketSortOrder to undefined instead of throwing an error.

lib/interviewer/containers/Interfaces/OrdinalBin.js

@@ -12,31 +12,22 @@ import { getNetworkNodesForType } from '../../selectors/interface';
 import { getPromptVariable } from '../../selectors/prop';
 
 /**
-  * OrdinalBin Interface
-  */
-const OrdinalBin = ({
-  prompt,
-  nodesForPrompt,
-  stage,
-}) => {
-  const {
-    prompts,
-  } = stage;
+ * OrdinalBin Interface
+ */
+const OrdinalBin = ({ prompt, nodesForPrompt, stage }) => {
+  const { prompts } = stage;
 
   return (
     <div className="ordinal-bin-interface">
       <div className="ordinal-bin-interface__prompt">
-        <Prompts
-          prompts={prompts}
-          currentPrompt={prompt.id}
-        />
+        <Prompts prompts={prompts} currentPrompt={prompt?.id} />
       </div>
       <div className="ordinal-bin-interface__bucket">
         <MultiNodeBucket
           nodes={nodesForPrompt}
-          listId={`${stage.id}_${prompt.id}_NODE_BUCKET`}
+          listId={`${stage.id}_${prompt?.id}_NODE_BUCKET`}
           itemType="EXISTING_NODE"
-          sortOrder={prompt.bucketSortOrder}
+          sortOrder={prompt?.bucketSortOrder}
         />
       </div>
       <div className="ordinal-bin-interface__bins">
@@ -58,14 +49,11 @@ function makeMapStateToProps() {
     const activePromptVariable = getPromptVariable(state, props);
 
     return {
-      nodesForPrompt: stageNodes.filter(
-        (node) => isNil(node[entityAttributesProperty][activePromptVariable]),
+      nodesForPrompt: stageNodes.filter((node) =>
+        isNil(node[entityAttributesProperty][activePromptVariable]),
       ),
     };
   };
 }
 
-export default compose(
-  withPrompt,
-  connect(makeMapStateToProps),
-)(OrdinalBin);
+export default compose(withPrompt, connect(makeMapStateToProps))(OrdinalBin);