diff --git a/js/.gitignore b/js/.gitignore
index 22e6580..34977ee 100644
--- a/js/.gitignore
+++ b/js/.gitignore
@@ -1,2 +1,2 @@
-node_modules
+node_modules
 .idea
\ No newline at end of file
diff --git a/js/fizzbuzz.bf b/js/fizzbuzz.bf
index e4c514e..dd46222 100644
--- a/js/fizzbuzz.bf
+++ b/js/fizzbuzz.bf
@@ -1,2 +1 @@
-
-    ++[-].
\ No newline at end of file
+hello...[[].]]
diff --git a/js/src/index.js b/js/src/index.js
index 81672ba..5e89184 100644
--- a/js/src/index.js
+++ b/js/src/index.js
@@ -1,5 +1,8 @@
 import fs from 'fs/promises';
 
+const RED = '\x1B[1;31m';
+const RESET = '\x1B[1;0m';
+
 function lex(string) {
   const tokens = [];
 
@@ -83,9 +86,9 @@ function reportError(source, message, span) {
   const linePrefix = `${lineNumber} | `;
   const lineSpan = span - lastNewlineIdx;
 
-  console.error(`error: ${message}`);
+  console.error(`${RED}error: ${message}${RESET}`);
   console.error(`${linePrefix}${line}`);
-  console.error(`${' '.repeat(linePrefix.length)}${'-'.repeat(lineSpan)}^`);
+  console.error(`${' '.repeat(linePrefix.length + lineSpan)}${RED}^${RESET}`);
 }
 
 const file = process.argv[2];