Add m-esr52 at 52.6.0

1 files changed, 33 insertions, 0 deletions

diff --git a/addon-sdk/source/lib/sdk/system/environment.js b/addon-sdk/source/lib/sdk/system/environment.js
new file mode 100644
index 000000000..13621a696
--- /dev/null
+++ b/addon-sdk/source/lib/sdk/system/environment.js
@@ -0,0 +1,33 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+'use strict';
+
+module.metadata = {
+  "stability": "stable"
+};
+
+const { Cc, Ci } = require('chrome');
+const { get, set, exists } = Cc['@mozilla.org/process/environment;1'].
+                             getService(Ci.nsIEnvironment);
+
+exports.env = new Proxy({}, {
+  deleteProperty(target, property) {
+    set(property, null);
+    return true;
+  },
+
+  get(target, property, receiver) {
+    return get(property) || undefined;
+  },
+
+  has(target, property) {
+    return exists(property);
+  },
+
+  set(target, property, value, receiver) {
+    set(property, value);
+    return true;
+  }
+});