From 273494bd932423e45701b72ce4bdb97ab8b4d73d Mon Sep 17 00:00:00 2001
From: Oleh <oleh.matvienko@work.gmail.com>
Date: Tue, 15 Aug 2023 00:05:36 +0300
Subject: [PATCH] add solution

---
 src/transformState.js | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/transformState.js b/src/transformState.js
index a1eaa0640..7f6bde831 100644
--- a/src/transformState.js
+++ b/src/transformState.js
@@ -5,7 +5,34 @@
  * @param {Object[]} actions
  */
 function transformState(state, actions) {
-  // write code here
+  for (const action of actions) {
+    switch (action.type) {
+      case 'addProperties':
+        if (action.extraData) {
+          Object.assign(state, action.extraData);
+        }
+        break;
+
+      case 'removeProperties':
+        if (action.keysToRemove) {
+          for (const key of action.keysToRemove) {
+            delete state[key];
+          }
+        }
+        break;
+
+      case 'clear':
+        for (const key in state) {
+          if (state.hasOwnProperty(key)) {
+            delete state[key];
+          }
+        }
+        break;
+
+      default:
+        throw new Error(`Unknown action type: ${action.type}`);
+    }
+  }
 }
 
 module.exports = transformState;