fix: 🐛 quick-serialize records before applying boolean filter

addons/api/mirage/config.js

@@ -438,8 +438,9 @@ export default function () {
             sessionModel?.scope?.scope?.id === scope_id
           );
         });
+      } else {
+        resultSet = sessions.where((session) => session.scopeId === scope_id);
       }
-      resultSet = sessions.where((session) => session.scopeId === scope_id);
       return resultSet.filter(makeBooleanFilter(filter));
     }
   );

addons/api/mirage/helpers/bexpr-filter.js

@@ -1,4 +1,19 @@
 import { makeEvaluator } from 'js-bexpr';
+import { underscore } from '@ember/string';
+
+/**
+ * Because Mirage, a record cannot be serialized outside of a route handler
+ * context.  Here is a quick and dirty attempt to serialize attribute names
+ * to underscore format.  This is not entirely realistic, but may suffice.
+ */
+const quickSerialize = (item) => {
+  const json = item.toJSON();
+  Object.keys(json).forEach((key) => {
+    const newKey = underscore(key);
+    json[newKey] = json[key];
+  });
+  return json;
+};
 
 /**
  * Creates a filter function that operates on a single object, which itself
@@ -8,7 +23,10 @@ export default (expression) => {
   if (expression) {
     const evaluator = makeEvaluator(expression);
     // Since API query selectors begin with `/item`, the instance is wrapped.
-    return (item) => evaluator({ item });
+    return (item) => {
+      const json = quickSerialize(item);
+      return evaluator({ item: json });
+    };
   } else {
     // If no expression was passed, always return true,
     // thus filtering out none.