Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 64 insertions, 0 deletions

diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-removeChild.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-removeChild.js
new file mode 100644
index 0000000000..99d0ff5027
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-removeChild.js
@@ -0,0 +1,64 @@
+/**
+ * @fileoverview Reject using element.parentNode.removeChild(element) when
+ *               element.remove() can be used instead.
+ *
+ * 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";
+
+// -----------------------------------------------------------------------------
+// Rule Definition
+// -----------------------------------------------------------------------------
+
+var helpers = require("../helpers");
+
+module.exports = function(context) {
+  // ---------------------------------------------------------------------------
+  // Public
+  //  --------------------------------------------------------------------------
+
+  return {
+    CallExpression(node) {
+      let callee = node.callee;
+      if (
+        callee.type !== "MemberExpression" ||
+        callee.property.type !== "Identifier" ||
+        callee.property.name != "removeChild" ||
+        node.arguments.length != 1
+      ) {
+        return;
+      }
+
+      if (
+        callee.object.type == "MemberExpression" &&
+        callee.object.property.type == "Identifier" &&
+        callee.object.property.name == "parentNode" &&
+        helpers.getASTSource(callee.object.object, context) ==
+          helpers.getASTSource(node.arguments[0])
+      ) {
+        context.report(
+          node,
+          "use element.remove() instead of " +
+            "element.parentNode.removeChild(element)"
+        );
+      }
+
+      if (
+        node.arguments[0].type == "MemberExpression" &&
+        node.arguments[0].property.type == "Identifier" &&
+        node.arguments[0].property.name == "firstChild" &&
+        helpers.getASTSource(callee.object, context) ==
+          helpers.getASTSource(node.arguments[0].object)
+      ) {
+        context.report(
+          node,
+          "use element.firstChild.remove() instead of " +
+            "element.removeChild(element.firstChild)"
+        );
+      }
+    },
+  };
+};