composer.json drupal 8.4

Index: composer.json
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- composer.json	(revision 82c09eb71244eea9f1f54d33e32d6f5d99f26e91)
+++ composer.json	(revision )
@@ -4,11 +4,12 @@
     "type": "project",
     "license": "GPL-2.0+",
     "require": {
-        "composer/installers": "^1.0.21",
-        "wikimedia/composer-merge-plugin": "~1.3"
+        "composer/installers": "^1.0.24",
+        "wikimedia/composer-merge-plugin": "^1.4",
+        "drupal/core": "^8.4"
     },
     "replace": {
-        "drupal/core": "~8.2"
+
     },
     "minimum-stability": "dev",
     "prefer-stable": true,
@@ -19,7 +20,10 @@
     "extra": {
         "_readme": [
             "By default Drupal loads the autoloader from ./vendor/autoload.php.",
-            "To change the autoloader you can edit ./autoload.php."
+            "To change the autoloader you can edit ./autoload.php.",
+            "This file specifies the packages.drupal.org repository.",
+            "You can read more about this composer repository at:",
+            "https://www.drupal.org/node/2718229"
         ],
         "merge-plugin": {
             "include": [
@@ -28,6 +32,15 @@
             "recurse": false,
             "replace": false,
             "merge-extra": false
+        },
+        "installer-paths": {
+            "core": ["type:drupal-core"],
+            "modules/contrib/{$name}": ["type:drupal-module"],
+            "profiles/contrib/{$name}": ["type:drupal-profile"],
+            "themes/contrib/{$name}": ["type:drupal-theme"],
+            "drush/contrib/{$name}": ["type:drupal-drush"],
+            "modules/custom/{$name}": ["type:drupal-custom-module"],
+            "themes/custom/{$name}": ["type:drupal-custom-theme"]
         }
     },
     "autoload": {
@@ -37,8 +50,16 @@
     },
     "scripts": {
         "pre-autoload-dump": "Drupal\\Core\\Composer\\Composer::preAutoloadDump",
-        "post-autoload-dump": "Drupal\\Core\\Composer\\Composer::ensureHtaccess",
+        "post-autoload-dump": [
+          "Drupal\\Core\\Composer\\Composer::ensureHtaccess"
+        ],
         "post-package-install": "Drupal\\Core\\Composer\\Composer::vendorTestCodeCleanup",
         "post-package-update": "Drupal\\Core\\Composer\\Composer::vendorTestCodeCleanup"
-    }
+    },
+    "repositories": [
+        {
+            "type": "composer",
+            "url": "https://packages.drupal.org/8"
+        }
+    ]
 }