1 files changed, 34 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/helpers.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/helpers.js
index 9ab51df37e..7d44b4b1b3 100644
--- a/tools/lint/eslint/eslint-plugin-mozilla/lib/helpers.js
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/helpers.js
@@ -794,4 +794,38 @@ module.exports = {
     }
     return null;
   },
+
+  /**
+   * Gets the scope for a node taking account of where the scope function
+   * is available (supports node versions earlier than 8.37.0).
+   *
+   * @param {object} context
+   *   The context passed from ESLint.
+   * @param {object} node
+   *   The node to get the scope for.
+   * returns {function}
+   *   The getScope function object.
+   */
+  getScope(context, node) {
+    return context.sourceCode?.getScope
+      ? context.sourceCode.getScope(node)
+      : context.getScope();
+  },
+
+  /**
+   * Gets the ancestors for a node taking account of where the ancestors function
+   * is available (supports node versions earlier than 8.38.0).
+   *
+   * @param {object} context
+   *   The context passed from ESLint.
+   * @param {object} node
+   *   The node to get the scope for.
+   * returns {function}
+   *   The getScope function object.
+   */
+  getAncestors(context, node) {
+    return context.sourceCode?.getAncestors
+      ? context.sourceCode.getAncestors(node)
+      : context.getAncestors();
+  },
 };