Check config is defined

ampproject · May 1, 2017 · 0b70a90 · 0b70a90
1 parent e300e86
commit 0b70a90
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/extensions/amp-form/0.1/form-verifiers.js b/extensions/amp-form/0.1/form-verifiers.js
@@ -77,7 +77,7 @@ function parseConfig_(script) {
       throw new Error('Failed to parse amp-form config. Is it valid JSON?');
     });
     const config = json && json[CONFIG_KEY];
-    if (!config.length) {
+    if (!config || !config.length) {
       throw new Error(`The amp-form verification config should contain an array
         property ${CONFIG_KEY} with at least one element`);
     }