New source found from dndbeyond.com

ddb_main/tools/js/Shared/containers/panes/ClassSpellPane/ClassSpellPane.tsx

@@ -1,5 +1,6 @@
 import React from "react";
 import { connect, DispatchProp } from "react-redux";
+import { AnyAction } from "redux";
 
 import {
   AnySimpleDataType,
@@ -39,7 +40,9 @@ import SpellDetail from "../../../components/SpellDetail";
 import { appEnvSelectors } from "../../../selectors";
 import { SharedAppState } from "../../../stores/typings";
 
-interface Props extends DispatchProp {
+// TODO: We are typing with AnyAction here to work around issues with UnknownAction, the type that was introduced in Redux 5.
+// If we decide to modernize to Redux 5, we will need to refactor much of the Rules Engine redux usage.
+interface Props extends DispatchProp<AnyAction> {
   spells: Array<Spell>;
   spellCasterInfo: SpellCasterInfo;
   ruleData: RuleData;
@@ -203,13 +206,13 @@ class ClassSpellPane extends React.PureComponent<Props, State> {
     let expandedDataOriginRef = SpellUtils.getExpandedDataOriginRef(spell);
     if (expandedDataOriginRef !== null) {
       parentNode = (
-        <React.Fragment>
+        <>
           {parentNode} &bull;{" "}
           {EntityUtils.getDataOriginRefName(
             expandedDataOriginRef,
             dataOriginRefData
           )}
-        </React.Fragment>
+        </>
       );
     }