From 14053ed7c4dd0e2486c22fcb98bd65ef9699ff0e Mon Sep 17 00:00:00 2001
From: Samuel Reed <samuel.trace.reed@gmail.com>
Date: Tue, 18 Jul 2017 17:32:57 -0500
Subject: [PATCH] Handle unknown file without crash.

---
 debug-trace.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/debug-trace.js b/debug-trace.js
index 3077f12..7db2bff 100644
--- a/debug-trace.js
+++ b/debug-trace.js
@@ -64,7 +64,8 @@ module.exports = function debugTrace(options) {
 
 console.traceFormat = function (call, method) {
   var options = {};
-  call.filename = call.getFileName().replace(console.traceOptions.cwd, '');
+  var fileName = call.getFileName();
+  call.filename = (fileName || '<unknown file>').replace(console.traceOptions.cwd, '');
   call.method = method;
   call.functionName = call.getFunctionName() || 'anonymous'
   call.getDate = function getDate() {