Better applyDeltas

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@ztimson/utils",
-	"version": "0.27.1",
+	"version": "0.27.3",
 	"description": "Utility library",
 	"author": "Zak Timson",
 	"license": "MIT",

src/objects.ts

@@ -1,24 +1,30 @@
 export type Delta = { [key: string]: any | Delta | null };
 
+
 /**
- * Applies deltas in order to modify `target`.
+ * Applies deltas to `target`.
- * @param base - Original
+ * @param base starting point
- * @param deltas - List of deltas to apply
+ * @param deltas List of deltas to apply
  * @returns Mutated target
  */
-export function applyDelta(base: any, deltas: any): any {
+export function applyDeltas(base: any, ...deltas: any[]): any {
-	if(deltas === null) return null;
+	function applyDelta(base: any, delta: any): any {
-	if(typeof base !== 'object' || base === null) return deltas === undefined ? base : deltas;
+		if(delta === null) return null;
+		if(typeof base !== 'object' || base === null) return delta === undefined ? base : delta;
 		const result = Array.isArray(base) ? [...base] : { ...base };
-	for(const key in deltas) {
+		for(const key in delta) {
-		const val = deltas[key];
+			const val = delta[key];
 			if(val === undefined) delete result[key];
-		else if (typeof val === 'object' && val !== null && !(Array.isArray(val))) result[key] = applyDelta(result[key], val);
+			else if(typeof val === 'object' && val !== null && !Array.isArray(val)) result[key] = applyDelta(result[key], val);
 			else result[key] = val;
 		}
 		return result;
 	}
 
+	for(const d of deltas.flat()) base = applyDelta(base, d?.delta ?? d);
+	return base;
+}
+
 /**
  * Creates a nested delta that reverts `target` back to `old`.
  * @param old - Original object