From 521071b516536d71e16160217ca6f1a7e48025bb Mon Sep 17 00:00:00 2001
From: beliy-a <b.a.v.beliy@gmail.com>
Date: Wed, 10 Mar 2021 21:33:37 +0300
Subject: [PATCH 1/2] change linebreak-style

---
 .eslintrc.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.eslintrc.json b/.eslintrc.json
index 188baf7..9b0f412 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -18,7 +18,7 @@
     ],
     "linebreak-style": [
       "error",
-      "unix"
+      "windows"
     ],
     "quotes": [
       "error",
@@ -265,4 +265,4 @@
       "never"
     ]
   }
-}
+}
\ No newline at end of file

From f354692b6994bbe707abaeb4d8ce0dd7c729881c Mon Sep 17 00:00:00 2001
From: beliy-a <b.a.v.beliy@gmail.com>
Date: Wed, 10 Mar 2021 21:34:12 +0300
Subject: [PATCH 2/2] add solving for all tasks

---
 Exercises/1-callback.js |  7 ++++++-
 Exercises/2-closure.js  |  3 ++-
 Exercises/3-wrapper.js  | 25 ++++++++++++++++++++++++-
 3 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/Exercises/1-callback.js b/Exercises/1-callback.js
index 8270a12..ccde3b3 100644
--- a/Exercises/1-callback.js
+++ b/Exercises/1-callback.js
@@ -1,5 +1,10 @@
 'use strict';
 
-const iterate = (obj, callback) => null;
+const iterate = (object, callback) => {
+  for (const key in object) {
+    const value = object[key];
+    callback(key, value, object);
+  }
+};
 
 module.exports = { iterate };
diff --git a/Exercises/2-closure.js b/Exercises/2-closure.js
index 0f07103..8cbbe9c 100644
--- a/Exercises/2-closure.js
+++ b/Exercises/2-closure.js
@@ -1,5 +1,6 @@
 'use strict';
 
-const store = x => null;
+const store = x => () => x;
+
 
 module.exports = { store };
diff --git a/Exercises/3-wrapper.js b/Exercises/3-wrapper.js
index fb7207e..8f8f4f5 100644
--- a/Exercises/3-wrapper.js
+++ b/Exercises/3-wrapper.js
@@ -1,5 +1,28 @@
 'use strict';
 
-const contract = (fn, ...types) => null;
+const contract = (fn, ...types) => (...args) => {
+  for (let i = 0; i < args.length; i++) {
+    const type = types[i].name;
+    const argType = typeof args[i];
+    if (type.toLowerCase() !== argType) {
+      throw new TypeError(
+        `Expected argument type "${type}"`
+      );
+    }
+  }
+
+  const res = fn(...args);
+  const resType = typeof res;
+  const lastType = types[types.length - 1].name;
+
+  if (resType !== lastType.toLowerCase()) {
+    throw new TypeError(
+      `Expected result type "${lastType}"`
+    );
+  }
+
+  return res;
+};
+
 
 module.exports = { contract };