From 2571bdc80a25b0137194bab58029765abe8870b2 Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Wed, 12 Jul 2017 23:04:16 -0400
Subject: Lex addition

---
 src/lexer.js | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src')

diff --git a/src/lexer.js b/src/lexer.js
index 7d876fb..eedabd7 100644
--- a/src/lexer.js
+++ b/src/lexer.js
@@ -20,6 +20,7 @@ const newSkippableLexeme = (type, regex) => {
 
 newValueLexeme('number', '\\d+', Number)
 newLexemeType('d', 'd')
+newLexemeType('+', '\\+')
 newSkippableLexeme('whitespace', '\\s+')
 
 const lex = (expressionString) => {
-- 
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