From 241e3054b0f1f35761767e003a334bd17976fc50 Mon Sep 17 00:00:00 2001
From: "Daniel D. Beck" <daniel@ddbeck.com>
Date: Mon, 17 Feb 2025 12:12:53 +0100
Subject: [PATCH 1/2] Add discouraged feature for `Function.prototype.caller`
 and `arguments`

Related-to: https://github.com/web-platform-dx/web-features/pull/2564#issuecomment-2607858771
---
 features/functions-caller-arguments.yml      | 10 ++++++
 features/functions-caller-arguments.yml.dist | 36 ++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 features/functions-caller-arguments.yml
 create mode 100644 features/functions-caller-arguments.yml.dist

diff --git a/features/functions-caller-arguments.yml b/features/functions-caller-arguments.yml
new file mode 100644
index 00000000000..7a2be05810e
--- /dev/null
+++ b/features/functions-caller-arguments.yml
@@ -0,0 +1,10 @@
+name: Function caller and arguments
+description: The `caller` and `arguments` properties of a non-strict mode `Function` object are the function that called it and the arguments it was called with. Not to be confused with the `arguments` variable in a function body's local scope.
+group: javascript
+spec: https://tc39.es/ecma262/multipage/error-handling-and-language-extensions.html#sec-forbidden-extensions
+discouraged:
+  according_to:
+    - https://tc39.es/ecma262/multipage/error-handling-and-language-extensions.html#sec-forbidden-extensions
+compat_features:
+  - javascript.builtins.Function.arguments
+  - javascript.builtins.Function.caller
diff --git a/features/functions-caller-arguments.yml.dist b/features/functions-caller-arguments.yml.dist
new file mode 100644
index 00000000000..f4fc75cabe4
--- /dev/null
+++ b/features/functions-caller-arguments.yml.dist
@@ -0,0 +1,36 @@
+# Generated from: functions-caller-arguments.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: "3"
+    safari_ios: "1"
+compat_features:
+  # baseline: false
+  # support:
+  #   chrome: "1"
+  #   chrome_android: "18"
+  #   edge: "12"
+  #   firefox: "1"
+  #   firefox_android: "4"
+  #   safari: "1"
+  #   safari_ios: "1"
+  - javascript.builtins.Function.arguments
+
+  # ⬇️ Same status as overall feature ⬇️
+  # baseline: false
+  # support:
+  #   chrome: "1"
+  #   chrome_android: "18"
+  #   edge: "12"
+  #   firefox: "1"
+  #   firefox_android: "4"
+  #   safari: "3"
+  #   safari_ios: "1"
+  - javascript.builtins.Function.caller

From 88e2f2ff4619e29ea35be6078c8a2d4cd5f7f2ee Mon Sep 17 00:00:00 2001
From: "Daniel D. Beck" <daniel@ddbeck.com>
Date: Mon, 17 Feb 2025 13:12:51 +0100
Subject: [PATCH 2/2] Add discouraged feature for `arguments.callee`

See-also: https://github.com/mdn/browser-compat-data/pull/18384
---
 features/arguments-callee.yml      | 12 ++++++++++++
 features/arguments-callee.yml.dist | 15 +++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 features/arguments-callee.yml
 create mode 100644 features/arguments-callee.yml.dist

diff --git a/features/arguments-callee.yml b/features/arguments-callee.yml
new file mode 100644
index 00000000000..835e4e4d3bb
--- /dev/null
+++ b/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
diff --git a/features/arguments-callee.yml.dist b/features/arguments-callee.yml.dist
new file mode 100644
index 00000000000..1d86c97ca9d
--- /dev/null
+++ b/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