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/Ability/utils.js

@@ -0,0 +1,19 @@
+import { HelperUtils } from '../Helper';
+import { RuleDataAccessors } from '../RuleData';
+/**
+ *
+ * @param score
+ * @param ruleData
+ */
+export function getStatScoreModifier(score, ruleData) {
+    return HelperUtils.lookupDataOrFallback(RuleDataAccessors.getStatModifiersLookup(ruleData), score, 0);
+}
+/**
+ *
+ * @param totalBonusScore
+ * @param highestSetScore
+ * @param ruleData
+ */
+export function getBestAbilityScore(totalBonusScore, highestSetScore, ruleData) {
+    return Math.min(RuleDataAccessors.getMaxStatScore(ruleData), Math.max(totalBonusScore, highestSetScore));
+}