Simplify cachedMerge

ooflorent · ooflorent · commit fac34248f4c8 · 2018-04-10T22:12:30.000+02:00
diff --git a/lib/util/cachedMerge.js b/lib/util/cachedMerge.js
@@ -6,19 +6,14 @@
 
 const mergeCache = new WeakMap();
 
-const cachedMerge = (first, ...args) => {
-	if (args.length === 0) return first;
-	if (args.length > 1) {
-		return cachedMerge(first, cachedMerge(...args));
-	}
-	const second = args[0];
+const cachedMerge = (first, second) => {
 	let innerCache = mergeCache.get(first);
 	if (innerCache === undefined) {
 		innerCache = new WeakMap();
 		mergeCache.set(first, innerCache);
 	}
-	const cachedMerge = innerCache.get(second);
-	if (cachedMerge !== undefined) return cachedMerge;
+	const prevMerge = innerCache.get(second);
+	if (prevMerge !== undefined) return prevMerge;
 	const newMerge = Object.assign({}, first, second);
 	innerCache.set(second, newMerge);
 	return newMerge;
