Escape encoding of special character to avoid crash of bto (#547)

Co-authored-by: Eric Lau <[email protected]>

Author: CoveMB

packages/ui/src/solidity/remix.ts

@@ -1,8 +1,15 @@
 export function remixURL(code: string, upgradeable = false): URL {
   const remix = new URL('https://remix.ethereum.org');
-  remix.searchParams.set('code', btoa(code).replace(/=*$/, ''));
+
+  const codeWithEscapedSpecialCharacters = Array.from(new TextEncoder().encode(code), b => String.fromCharCode(b)).join(
+    '',
+  );
+
+  remix.searchParams.set('code', btoa(codeWithEscapedSpecialCharacters).replace(/=*$/, ''));
+
   if (upgradeable) {
     remix.searchParams.set('deployProxy', upgradeable.toString());
   }
+
   return remix;
 }