From 4fae9ceea449cab3920947a5bd75755dd00e4ada Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 04:08:53 +0200
Subject: [PATCH 01/10] Update 1-callback.js

---
 Exercises/1-callback.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Exercises/1-callback.js b/Exercises/1-callback.js
index 8270a12..ad0adbc 100644
--- a/Exercises/1-callback.js
+++ b/Exercises/1-callback.js
@@ -1,5 +1,14 @@
 'use strict';
 
-const iterate = (obj, callback) => null;
+const iterate = (obj, callback) => {
+  if (!obj) {
+    callback(new Error('obj needed'));
+    return;
+  }
+  for (const key in obj) {
+    callback(key, obj[key], obj);
+  }
+  return;
+};
 
 module.exports = { iterate };

From 78ef473a318aac3c6fb13cfd63a6cc6d8b603bc1 Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 04:09:31 +0200
Subject: [PATCH 02/10] Update 2-closure.js

---
 Exercises/2-closure.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Exercises/2-closure.js b/Exercises/2-closure.js
index 0f07103..db0c011 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 };
+

From c2e962994d0f9e857bb9cd56fc25d30f8a8251da Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 04:09:54 +0200
Subject: [PATCH 03/10] Update 3-wrapper.js

---
 Exercises/3-wrapper.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Exercises/3-wrapper.js b/Exercises/3-wrapper.js
index fb7207e..935969c 100644
--- a/Exercises/3-wrapper.js
+++ b/Exercises/3-wrapper.js
@@ -1,5 +1,13 @@
 'use strict';
 
-const contract = (fn, ...types) => null;
+const contract = (fn, ...types) => (...arr) => {
+  for (let i = 1; i < types.length - 1; i++) {
+    if (typeof fn(...arr) !== types[i].name.toLowerCase()) {
+      throw new TypeError('Types are different');
+    }
+  }
+  return fn(...arr);
+};
 
 module.exports = { contract };
+

From c0d9e7a28d134d30049ec0e74c3866a63314f0a8 Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 20:26:43 +0200
Subject: [PATCH 04/10] Update 1-callback.js

---
 Exercises/1-callback.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Exercises/1-callback.js b/Exercises/1-callback.js
index ad0adbc..69c423c 100644
--- a/Exercises/1-callback.js
+++ b/Exercises/1-callback.js
@@ -5,10 +5,11 @@ const iterate = (obj, callback) => {
     callback(new Error('obj needed'));
     return;
   }
-  for (const key in obj) {
+  for (const key of Object.keys(obj)) {
     callback(key, obj[key], obj);
   }
   return;
 };
 
 module.exports = { iterate };
+

From 2af4528024ae7e8530f20233cadbd79c66282b34 Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 20:27:51 +0200
Subject: [PATCH 05/10] Update 3-wrapper.js

---
 Exercises/3-wrapper.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Exercises/3-wrapper.js b/Exercises/3-wrapper.js
index 935969c..5d7633f 100644
--- a/Exercises/3-wrapper.js
+++ b/Exercises/3-wrapper.js
@@ -1,8 +1,15 @@
 'use strict';
 
 const contract = (fn, ...types) => (...arr) => {
-  for (let i = 1; i < types.length - 1; i++) {
-    if (typeof fn(...arr) !== types[i].name.toLowerCase()) {
+  const resultType = typeof fn(...arr);
+  const neededReType = types[types.length - 1].name.toLowerCase();
+  for (let i = 0; i < types.length - 1; i++) {
+    const argType = typeof arr[i];
+    const neededArgType = types[i].name.toLowerCase();
+    if (argType !== neededArgType) {
+      throw new TypeError('Types are different');
+    }
+    if (resultType !== neededReType) {
       throw new TypeError('Types are different');
     }
   }
@@ -11,3 +18,4 @@ const contract = (fn, ...types) => (...arr) => {
 
 module.exports = { contract };
 
+

From e7fef1a6586e79d8ceb270e79d9155a444723e0d Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 22:15:48 +0200
Subject: [PATCH 06/10] Update 3-wrapper.js

---
 Exercises/3-wrapper.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Exercises/3-wrapper.js b/Exercises/3-wrapper.js
index 5d7633f..d87b74c 100644
--- a/Exercises/3-wrapper.js
+++ b/Exercises/3-wrapper.js
@@ -3,15 +3,15 @@
 const contract = (fn, ...types) => (...arr) => {
   const resultType = typeof fn(...arr);
   const neededReType = types[types.length - 1].name.toLowerCase();
+  if (resultType !== neededReType) {
+      throw new TypeError('Types are different');
+    }
   for (let i = 0; i < types.length - 1; i++) {
     const argType = typeof arr[i];
     const neededArgType = types[i].name.toLowerCase();
     if (argType !== neededArgType) {
       throw new TypeError('Types are different');
     }
-    if (resultType !== neededReType) {
-      throw new TypeError('Types are different');
-    }
   }
   return fn(...arr);
 };

From 17aeeb02000138b5cb9d5fd671bb8645364615e0 Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 22:23:36 +0200
Subject: [PATCH 07/10] Update 3-wrapper.js

---
 Exercises/3-wrapper.js | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/Exercises/3-wrapper.js b/Exercises/3-wrapper.js
index d87b74c..460dc40 100644
--- a/Exercises/3-wrapper.js
+++ b/Exercises/3-wrapper.js
@@ -1,11 +1,6 @@
 'use strict';
 
 const contract = (fn, ...types) => (...arr) => {
-  const resultType = typeof fn(...arr);
-  const neededReType = types[types.length - 1].name.toLowerCase();
-  if (resultType !== neededReType) {
-      throw new TypeError('Types are different');
-    }
   for (let i = 0; i < types.length - 1; i++) {
     const argType = typeof arr[i];
     const neededArgType = types[i].name.toLowerCase();
@@ -13,9 +8,15 @@ const contract = (fn, ...types) => (...arr) => {
       throw new TypeError('Types are different');
     }
   }
-  return fn(...arr);
+  const neededReType = types[types.length - 1].name.toLowerCase();
+  const result = fn(...arr);
+  if (typeof result !== neededReType) {
+      throw new TypeError('Types are different');
+    }
+  return result;
 };
 
 module.exports = { contract };
 
 
+

From f8cbfc80a7a9a55d37d768070edf9c67af043a87 Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 22:28:15 +0200
Subject: [PATCH 08/10] Update 3-wrapper.js

---
 Exercises/3-wrapper.js | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/Exercises/3-wrapper.js b/Exercises/3-wrapper.js
index 460dc40..18d4889 100644
--- a/Exercises/3-wrapper.js
+++ b/Exercises/3-wrapper.js
@@ -17,6 +17,3 @@ const contract = (fn, ...types) => (...arr) => {
 };
 
 module.exports = { contract };
-
-
-

From 6eb04e3e257f46ef920309b6943bfe620c2fc8be Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 22:32:58 +0200
Subject: [PATCH 09/10] Update 3-wrapper.js

---
 Exercises/3-wrapper.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Exercises/3-wrapper.js b/Exercises/3-wrapper.js
index 18d4889..8e43226 100644
--- a/Exercises/3-wrapper.js
+++ b/Exercises/3-wrapper.js
@@ -17,3 +17,4 @@ const contract = (fn, ...types) => (...arr) => {
 };
 
 module.exports = { contract };
+

From 1fc193e84fb7d9ac8747ece5d86601b9ab8d5d12 Mon Sep 17 00:00:00 2001
From: Destaby <53400745+Destaby@users.noreply.github.com>
Date: Mon, 16 Dec 2019 22:37:48 +0200
Subject: [PATCH 10/10] Update 3-wrapper.js

---
 Exercises/3-wrapper.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/Exercises/3-wrapper.js b/Exercises/3-wrapper.js
index 8e43226..789970e 100644
--- a/Exercises/3-wrapper.js
+++ b/Exercises/3-wrapper.js
@@ -11,10 +11,9 @@ const contract = (fn, ...types) => (...arr) => {
   const neededReType = types[types.length - 1].name.toLowerCase();
   const result = fn(...arr);
   if (typeof result !== neededReType) {
-      throw new TypeError('Types are different');
-    }
+    throw new TypeError('Types are different');
+  }
   return result;
 };
 
 module.exports = { contract };
-

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