feat: expose auth userStorage option to facilitate lower cookie sizes#1545
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cemalkilic
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Aug 29, 2025
Co-authored-by: Cemal Kılıç <cemalkilic@users.noreply.github.com>
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Adds an experimental option `encode` on the `cookies` object when using `createBrowserClient()` and `createServerClient()`. If this is set to `tokens-only` then only the user's access token and refresh token will be encoded in the cookies, causing significant cookie size savings, often greater than 50%. It utilizes [split session storage in `auth-js`](supabase/supabase-js#1545), with some trade-offs such as the inability to access the `user` property on the `supabase.auth.getSession()` object in the server. This wasn't supposed to be done anyway, and `getClaims()` is a secure alternative for it.
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Adds the
userStorageoption to facilitate the experimental split session storage capability inauth-js. It will be propagated down to the@supabase/ssrpackage hopefully significantly decreasing cookie sizes.