Grabbed dndbeyond's source code

```
~/go/bin/sourcemapper -output ddb -jsurl https://media.dndbeyond.com/character-app/static/js/main.90aa78c5.js
```

ddb_main/subApps/builder/helpers/getMissingRequirements.ts

@@ -0,0 +1,16 @@
+import { PrerequisiteFailure } from "../types";
+
+// Format a group of PrerequisiteFailures into a human-readable string
+const formatReq = (group: Array<PrerequisiteFailure>) =>
+  group.map(({ data }) => {
+    const key = data.statKey?.toUpperCase() || "";
+    const value = data.requiredValue;
+    const amount = data.currentAmount === null ? "None" : data.currentAmount;
+
+    return `${key} ${value} (${amount})`;
+  });
+
+// Loop through groups of PrerequisiteFailures and format them into a human-readable string
+export const getMissingRequirements = (
+  groups: Array<Array<PrerequisiteFailure>>
+) => groups.map((group) => formatReq(group).join(", ")).join(" or ");