From aa3f73b3ea36d1985eb8a16594fc5fb354c17dff Mon Sep 17 00:00:00 2001
From: "Benjamin E. Coe" <bencoe@google.com>
Date: Tue, 30 Apr 2019 23:43:27 -0700
Subject: [PATCH] fix: initial column could be 0 on Node 10, after wrapper
 taken into account (#22)

---
 lib/source.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/source.js b/lib/source.js
index 2e527dba..5ba5f79f 100644
--- a/lib/source.js
+++ b/lib/source.js
@@ -101,7 +101,7 @@ function originalEndPositionFor (sourceMap, line, column) {
   const beforeEndMapping = originalPositionTryBoth(
     sourceMap,
     line,
-    column - 1
+    Math.max(column - 1, 1)
   )
 
   if (beforeEndMapping.source === null) {