From 016315afbcb707b7ee5048c194bdaad04ec5397e Mon Sep 17 00:00:00 2001
From: Dsm0 <willrinkoff@gmail.com>
Date: Wed, 28 Jan 2026 17:06:16 -0800
Subject: [PATCH] fix 'Maximum call stack size exceeded'

---
 packages/core/util.mjs              | 9 +++++++--
 website/src/repl/useReplContext.jsx | 7 ++++++-
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/packages/core/util.mjs b/packages/core/util.mjs
index 915a2cb77..c38c8e05f 100644
--- a/packages/core/util.mjs
+++ b/packages/core/util.mjs
@@ -339,8 +339,13 @@ export function uniqsortr(a) {
 
 export function unicodeToBase64(text) {
   const utf8Bytes = new TextEncoder().encode(text);
-  const base64String = btoa(String.fromCharCode(...utf8Bytes));
-  return base64String;
+  let binaryString = '';
+  const chunkSize = 0x8000;
+  for (let i = 0; i < utf8Bytes.length; i += chunkSize) {
+    const chunk = utf8Bytes.subarray(i, i + chunkSize);
+    binaryString += String.fromCharCode.apply(null, chunk);
+  }
+  return btoa(binaryString);
 }
 
 export function base64ToUnicode(base64String) {
diff --git a/website/src/repl/useReplContext.jsx b/website/src/repl/useReplContext.jsx
index 0d44eedfe..fc4ab6e10 100644
--- a/website/src/repl/useReplContext.jsx
+++ b/website/src/repl/useReplContext.jsx
@@ -109,7 +109,12 @@ export function useReplContext() {
         // Get the full buffer content from the editor instead of just the evaluated block
         const fullBufferCode = editorRef.current?.code || code;
         setLatestCode(fullBufferCode);
-        window.location.hash = '#' + code2hash(fullBufferCode);
+
+        try {
+          window.location.hash = '#' + code2hash(fullBufferCode);
+        } catch (e) {
+          console.warn('[useReplContext] Failed to update hash:', e.message);
+        }
         setDocumentTitle(fullBufferCode);
         const viewingPatternData = getViewingPatternData();
         setVersionDefaultsFrom(fullBufferCode);