Develop

package.json

@@ -17,7 +17,7 @@
   "license": "GPL-3.0",
   "devDependencies": {
     "@mate-academy/eslint-config": "latest",
-    "@mate-academy/scripts": "^1.8.6",
+    "@mate-academy/scripts": "^1.9.12",
     "eslint": "^8.57.0",
     "eslint-plugin-jest": "^28.6.0",
     "eslint-plugin-node": "^11.1.0",

src/transformStateWithClones.js

@@ -5,9 +5,60 @@
  * @param {Object[]} actions
  *
  * @return {Object[]}
+ *
+ * transformStateWithClones()
  */
 function transformStateWithClones(state, actions) {
-  // write code here
+  const result = [];
+  const stateCopy = { ...state };
+
+  for (const action of actions) {
+    switch (action.type) {
+      case 'addProperties':
+        result.push(addProperties(stateCopy, action.extraData));
+        break;
+
+      case 'removeProperties':
+        result.push(removeProperties(stateCopy, action.keysToRemove));
+        break;
+
+      case 'clear':
+        result.push(clear(stateCopy));
+        break;
+    }
+  }
+
+  return result;
+}
+
+function addProperties(stateCopy, extraData) {
+  Object.assign(stateCopy, extraData);
+
+  let stateA = {}; /* №1 */
+
+  stateA = { ...stateCopy };
+
+  return stateA;
+}
+
+function removeProperties(stateCopy, keysToRemove) {
+  for (const key of keysToRemove) {
+    delete stateCopy[key];
+  }
+
+  const stateB = { ...stateCopy };
+
+  return stateB;
+}
+
+function clear(stateCopy) {
+  for (const cler in stateCopy) {
+    delete stateCopy[cler];
+  }
+
+  const stateCopyB = {};
+
+  return stateCopyB;
 }
 
 module.exports = transformStateWithClones;