fix: protect from missing options

Author: remy

lib/monitor/watch.js

@@ -2,6 +2,7 @@ module.exports = watch;
 
 var debug = require('debug');
 var chokidar = require('chokidar');
+var undefsafe = require('undefsafe');
 var config = require('../config');
 var path = require('path');
 var utils = require('../utils');
@@ -50,13 +51,19 @@ function filterAndRestart(files) {
     }
 
     var cwd = process.cwd();
-    utils.log.detail('files triggering change check: ' + files.map(function (file) {
-      return path.relative(cwd, file);
-    }).join(', '));
-
-    var matched = match(files, config.options.monitor, config.options.execOptions.ext);
-
-    utils.log.detail('changes after filters (before/after): ' + [files.length, matched.result.length].join('/'));
+    utils.log.detail('files triggering change check: ' +
+      files.map(function (file) {
+        return path.relative(cwd, file);
+      }).join(', '));
+
+    var matched = match(
+      files,
+      config.options.monitor,
+      undefsafe(config, 'options.execOptions.ext')
+    );
+
+    utils.log.detail('changes after filters (before/after): ' +
+      [files.length, matched.result.length].join('/'));
 
     // reset the last check so we're only looking at recently modified files
     config.lastStarted = Date.now();

package.json

@@ -48,6 +48,7 @@
     "minimatch": "~0.3.0",
     "ps-tree": "~0.0.3",
     "touch": "~1.0.0",
+    "undefsafe": "0.0.3",
     "update-notifier": "^0.5.0"
   }
 }