Fix: no-useless-constructor crash on bodyless constructor (fixes #13830…

…) (#13842)
eslint · Nov 18, 2020 · d2239a1 · d2239a1
1 parent eda0aa1
commit d2239a1
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diff --git a/lib/rules/no-useless-constructor.js b/lib/rules/no-useless-constructor.js
@@ -162,6 +162,14 @@ module.exports = {
                 return;
             }
 
+            /*
+             * Prevent crashing on parsers which do not require class constructor
+             * to have a body, e.g. typescript and flow
+             */
+            if (!node.value.body) {
+                return;
+            }
+
             const body = node.value.body.body;
             const ctorParams = node.value.params;
             const superClass = node.parent.parent.superClass;