added header global

utilities/deepMerge.ts

@@ -0,0 +1,35 @@
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-nocheck
+
+/**
+ * Simple object check.
+ * @param item
+ * @returns {boolean}
+ */
+export function isObject(item: unknown): item is object {
+    return typeof item === 'object' && !Array.isArray(item)
+}
+
+/**
+ * Deep merge two objects.
+ * @param target
+ * @param ...sources
+ */
+export default function deepMerge<T, R>(target: T, source: R): T {
+    const output = { ...target }
+    if (isObject(target) && isObject(source)) {
+        Object.keys(source).forEach((key) => {
+            if (isObject(source[key])) {
+                if (!(key in target)) {
+                    Object.assign(output, { [key]: source[key] })
+                } else {
+                    output[key] = deepMerge(target[key], source[key])
+                }
+            } else {
+                Object.assign(output, { [key]: source[key] })
+            }
+        })
+    }
+
+    return output
+}