From d698c8d616ac825ce77bc2d89746db86f6227359 Mon Sep 17 00:00:00 2001
From: Ruslan Hrynchuk <r.momos@gmail.com>
Date: Thu, 10 Aug 2023 13:54:07 +0300
Subject: [PATCH] Stateful object. Tests passed.

---
 checklist.md          |  2 +-
 package.json          |  2 +-
 src/transformState.js | 30 +++++++++++++++++++++++++++++-
 3 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/checklist.md b/checklist.md
index e3ec5a57f..eef84d0b0 100644
--- a/checklist.md
+++ b/checklist.md
@@ -8,7 +8,7 @@ for (let item of actions) {
 
 ```
 
-GOOD EXAMPLE: 
+GOOD EXAMPLE:
 ```
 for (const action of actions) {
 ```
diff --git a/package.json b/package.json
index e83fa6dc7..55e4ae2de 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "license": "GPL-3.0",
   "devDependencies": {
     "@mate-academy/eslint-config": "*",
-    "@mate-academy/scripts": "^0.3.5",
+    "@mate-academy/scripts": "^1.2.8",
     "eslint": "^5.16.0",
     "eslint-plugin-jest": "^22.4.1",
     "eslint-plugin-node": "^8.0.1",
diff --git a/src/transformState.js b/src/transformState.js
index a1eaa0640..58c2caff4 100644
--- a/src/transformState.js
+++ b/src/transformState.js
@@ -5,7 +5,35 @@
  * @param {Object[]} actions
  */
 function transformState(state, actions) {
-  // write code here
+  for (const action of actions) {
+    switch (action.type) {
+      case ('addProperties'):
+        Object.assign(state, action.extraData);
+
+        break;
+
+      case ('removeProperties'):
+        for (const keyToRemove of action.keysToRemove) {
+          if (state.hasOwnProperty(keyToRemove)) {
+            delete state[keyToRemove];
+          }
+        }
+
+        break;
+
+      case ('clear'):
+        for (const stateKey in state) {
+          delete state[stateKey];
+        }
+
+        break;
+
+      default:
+        return 'ERROR';
+    }
+  }
+
+  return state;
 }
 
 module.exports = transformState;