hot fix

packages/web3-utils/src/objects.ts

@@ -36,18 +36,19 @@ export const mergeDeep = (
 	destination: Record<string, unknown>,
 	...sources: Record<string, unknown>[]
 ): Record<string, unknown> => {
-	const result = { ...destination }; // clone deep here
-	if (!isIterable(result)) {
-		return result;
+	if (!isIterable(destination)) {
+		return destination;
 	}
+	const result = { ...destination }; // clone deep here
 	for (const src of sources) {
+		// const src = { ..._src };
 		// eslint-disable-next-line no-restricted-syntax
 		for (const key in src) {
 			if (isIterable(src[key])) {
 				if (!result[key]) {
 					result[key] = {};
 				}
-				mergeDeep(
+				result[key] = mergeDeep(
 					result[key] as Record<string, unknown>,
 					src[key] as Record<string, unknown>,
 				);

packages/web3-utils/test/unit/objects.test.ts

@@ -22,9 +22,7 @@ import { objectBigintToString } from '../fixtures/system_test_utils';
 describe('objects', () => {
 	describe('mergeDeep', () => {
 		it.each(mergeDeepData)('$message', ({ destination, sources, output }) => {
-			mergeDeep(destination, ...sources);
-
-			expect(objectBigintToString(destination)).toEqual(objectBigintToString(output));
+			expect(mergeDeep(destination, ...sources)).toEqual(output);
 		});
 
 		it('should not mutate the sources', () => {