Grabbed dndbeyond's source code

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

ddb_main/packages/rules-engine/es/engine/Definition/utils.js

@@ -0,0 +1,15 @@
+import { DEFINITION_KEY_SEPARATOR } from './constants';
+/**
+ *
+ * @param definitionKey
+ */
+export function getDefinitionKeyType(definitionKey) {
+    return definitionKey.split(DEFINITION_KEY_SEPARATOR)[0];
+}
+/**
+ *
+ * @param definitionKey
+ */
+export function getDefinitionKeyId(definitionKey) {
+    return definitionKey.split(DEFINITION_KEY_SEPARATOR)[1];
+}