Another try on reducing the complexity

src/helpers/helpers.config.js

@@ -157,16 +157,8 @@ function createSubResolver(parentScopes, prop, value) {
 	const set = new Set([value]);
 	const {keys, includeParents} = _resolveSubKeys(parentScopes, prop, value);
 	for (const key of keys) {
-		for (const item of parentScopes) {
-			const scope = resolveObjectKey(item, key);
-			if (scope) {
-				set.add(scope);
-			} else if (key !== prop && scope === false) {
-				// If any of the fallback scopes is explicitly false, return false
-				// For example, options.hover falls back to options.interaction, when
-				// options.interaction is false, options.hover will also resolve as false.
-				return false;
-			}
+		if (addScopes(set, prop, key, parentScopes) === false) {
+			return false;
 		}
 	}
 	if (includeParents) {
@@ -175,6 +167,20 @@ function createSubResolver(parentScopes, prop, value) {
 	return _createResolver([...set]);
 }
 
+function addScopes(set, prop, key, parentScopes) {
+	for (const item of parentScopes) {
+		const scope = resolveObjectKey(item, key);
+		if (scope) {
+			set.add(scope);
+		} else if (key !== prop && scope === false) {
+			// If any of the fallback scopes is explicitly false, return false
+			// For example, options.hover falls back to options.interaction, when
+			// options.interaction is false, options.hover will also resolve as false.
+			return false;
+		}
+	}
+}
+
 function _resolveSubKeys(parentScopes, prop, value) {
 	const fallback = _resolve('_fallback', parentScopes.map(scope => scope[prop] || scope));
 	const keys = [prop];