chore: add jose to .next branch (#526)

* Add jose for it's base64url decode support

* Remove js-base64 becuase buffer check Vercel issue

.changeset/lazy-cows-shake.md

@@ -0,0 +1,5 @@
+---
+'@supabase/auth-helpers-shared': patch
+---
+
+Add jose for it's cross platform base64url decode support

.changeset/plenty-seas-build.md

@@ -0,0 +1,5 @@
+---
+'@supabase/auth-helpers-shared': patch
+---
+
+Remove js-base64 as its buffer check was causing issues for Vercel Edge Runtime

packages/shared/package.json

@@ -32,15 +32,15 @@
   "devDependencies": {
     "@supabase/supabase-js": "2.19.0",
     "@types/cookie": "^0.5.1",
+    "cookie": "^0.5.0",
     "next": "^12.1.5",
     "react": ">=17.0.2 <18.0.0 || >=18.0.0-0 <19.0.0",
     "react-dom": "^17.0.2 || ^18.0.0-0",
     "tsconfig": "workspace:*",
-    "tsup": "^6.5.0",
-    "cookie": "^0.5.0"
+    "tsup": "^6.5.0"
   },
   "dependencies": {
-    "js-base64": "^3.7.5"
+    "jose": "^4.14.3"
   },
   "peerDependencies": {
     "@supabase/supabase-js": "^2.19.0"

packages/shared/src/utils/cookies.ts

@@ -1,6 +1,6 @@
 import { Session } from '@supabase/supabase-js';
 import { parse, serialize } from 'cookie';
-import { fromBase64 } from 'js-base64';
+import { base64url } from 'jose';
 
 export { parse as parseCookies, serialize as serializeCookie };
 
@@ -48,9 +48,10 @@ export function parseSupabaseCookie(
     }
 
     const [_header, payloadStr, _signature] = session[0].split('.');
-    const payload = fromBase64(payloadStr);
+    const payload = base64url.decode(payloadStr);
+    const decoder = new TextDecoder();
 
-    const { exp, sub, ...user } = JSON.parse(payload);
+    const { exp, sub, ...user } = JSON.parse(decoder.decode(payload));
 
     return {
       expires_at: exp,