forklaunch 1.19.1

Launch faster with forklaunch
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diff --git a/index.js b/index.js
index 70bf590eac735a43af26abf7bb39dc90e5735202..782345bc88eb9e9d1e9d525f267b25f4ca6a58a8 100644
--- a/index.js
+++ b/index.js
@@ -332,14 +332,16 @@ function Yargonaut () {
 
   function findInModuleCache (lookingFor) {
     var found = null
-    for (var i = 0, files = Object.keys(require.cache); i < files.length; i++) {
-      for (var j = 0; j < lookingFor.length; j++) {
-        if (~files[i].lastIndexOf(lookingFor[j])) {
-          found = files[i]
-          break
+    if (require.cache) {
+      for (var i = 0, files = Object.keys(require.cache); i < files.length; i++) {
+        for (var j = 0; j < lookingFor.length; j++) {
+          if (~files[i].lastIndexOf(lookingFor[j])) {
+            found = files[i]
+            break
+          }
         }
+        if (found) break
       }
-      if (found) break
     }
     return found
   }