!

eslint · Aug 26, 2017 · bbfb53f · bbfb53f
1 parent 9b2f2f1
commit bbfb53f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/rule-context.js b/lib/rule-context.js
@@ -196,7 +196,7 @@ class RuleContext {
                 if (descriptor.message) {
                     throw new TypeError("context.report() called with a message and a messageId. Please only pass one.");
                 }
-                if (!messages || Object.prototype.hasOwnProperty.call(messages, id)) {
+                if (!messages || !Object.prototype.hasOwnProperty.call(messages, id)) {
                     throw new TypeError(`context.report() called with a messageId of '${id}' which is not present in the 'messages' config: ${JSON.stringify(messages, null, 2)}`);
                 }