Document from.upload() and from.update() workaround for React Native

web/spec/supabase.yml

@@ -986,6 +986,7 @@ pages:
       - Policy permissions required:
         - `buckets` permissions: none 
         - `objects` permissions: `insert`
+      - For React Native, using either `Blob`, `File` or `FormData` does not work as intended. Upload file using `ArrayBuffer` from base64 file data instead, see example below.
     examples:
       - name: Upload file
         isSpotlight: true
@@ -1000,6 +1001,18 @@ pages:
               upsert: false
             })
           ```
+      - name: Upload file using `ArrayBuffer` from base64 file data
+        js: |
+          ```js
+          import {decode} from 'base64-arraybuffer'
+
+          const { data, error } = await supabase
+            .storage
+            .from('avatars')
+            .upload('public/avatar1.png', decode('base64FileData'), {
+              contentType: 'image/png'
+            })
+          ```
 
   storage.from.update():
     title: 'from.update()'
@@ -1008,6 +1021,7 @@ pages:
       - Policy permissions required:
         - `buckets` permissions: none 
         - `objects` permissions: `update` and `select`
+      - For React Native, using either `Blob`, `File` or `FormData` does not work as intended. Update file using `ArrayBuffer` from base64 file data instead, see example below.
     examples:
       - name: Update file
         isSpotlight: true
@@ -1022,6 +1036,18 @@ pages:
               upsert: false
             })
           ```
+      - name: Update file using `ArrayBuffer` from base64 file data
+        js: |
+          ```js
+          import {decode} from 'base64-arraybuffer'
+
+          const { data, error } = await supabase
+            .storage
+            .from('avatars')
+            .update('public/avatar1.png', decode('base64FileData'), {
+              contentType: 'image/png'
+            })
+          ```
 
   storage.from.move():
     title: 'from.move()'