From 09fbd695ef08068635fa88295c5537f38215a954 Mon Sep 17 00:00:00 2001
From: Geoffrey Booth <webmaster@geoffreybooth.com>
Date: Thu, 24 Aug 2017 00:00:10 -0700
Subject: [PATCH] =?UTF-8?q?Check=20for=20the=20previous=20token=E2=80=99s?=
 =?UTF-8?q?=20existence=20before=20comparing=20against=20it?=
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---
 lib/coffeescript/lexer.js | 2 +-
 src/lexer.coffee          | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/coffeescript/lexer.js b/lib/coffeescript/lexer.js
index 20860559ac..4525dd9461 100644
--- a/lib/coffeescript/lexer.js
+++ b/lib/coffeescript/lexer.js
@@ -886,7 +886,7 @@
       if (value === ';') {
         this.seenFor = this.seenImport = this.seenExport = false;
         tag = 'TERMINATOR';
-      } else if (value === '*' && prev[0] === 'EXPORT') {
+      } else if (value === '*' && (prev != null ? prev[0] : void 0) === 'EXPORT') {
         tag = 'EXPORT_ALL';
       } else if (indexOf.call(MATH, value) >= 0) {
         tag = 'MATH';
diff --git a/src/lexer.coffee b/src/lexer.coffee
index 7093d28b95..3feff70f81 100644
--- a/src/lexer.coffee
+++ b/src/lexer.coffee
@@ -664,7 +664,7 @@ exports.Lexer = class Lexer
     if value is ';'
       @seenFor = @seenImport = @seenExport = no
       tag = 'TERMINATOR'
-    else if value is '*' and prev[0] is 'EXPORT'
+    else if value is '*' and prev?[0] is 'EXPORT'
       tag = 'EXPORT_ALL'
     else if value in MATH            then tag = 'MATH'
     else if value in COMPARE         then tag = 'COMPARE'