diff --git a/grammar.ne b/grammar.ne
index 12e2906..40cbbc3 100644
--- a/grammar.ne
+++ b/grammar.ne
@@ -1,7 +1,7 @@
 @{%
-const moo = require('moo');
+import moo from 'moo';
 
-const lexer = moo.compile({
+export const lexer = moo.compile({
   ws:      /[ \t]+/,
   nl:      { match: /\n/, lineBreaks: true },
   comment: /\/\/.*?$/,