diff --git a/lexer/lexer.go b/lexer/lexer.go
index 2c61d03..2ea7cd1 100644
--- a/lexer/lexer.go
+++ b/lexer/lexer.go
@@ -6,3 +6,8 @@ type Lexer struct {
 	readPosition int
 	ch           byte
 }
+
+func New(input string) *Lexer {
+	l := &Lexer{input: input}
+	return l
+}