Add discouraged feature for arguments.callee

See-also: mdn/browser-compat-data#18384

Author: ddbeck

features/arguments-callee.yml

@@ -0,0 +1,12 @@
+name: arguments.callee
+description: The `callee` property of the `arguments` variable in a non-strict function body's local scope is the function that `arguments` belongs to.
+spec: https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-arguments-exotic-objects
+group: javascript
+discouraged:
+  # From note 4: "The definition of this property […] exists to ensure that it
+  # is not defined in any other manner by conforming ECMAScript
+  # implementations."
+  according_to:
+    - https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-arguments-exotic-objects
+compat_features:
+  - javascript.functions.arguments.callee

features/arguments-callee.yml.dist

@@ -0,0 +1,15 @@
+# Generated from: arguments-callee.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: false
+  support:
+    chrome: "1"
+    chrome_android: "18"
+    edge: "12"
+    firefox: "1"
+    firefox_android: "4"
+    safari: "1"
+    safari_ios: "1"
+compat_features:
+  - javascript.functions.arguments.callee