I have a sveltekit app working with Supabase on Vercel. There seems to be an issue with Supabase js and Node 16:

[POST] /api/auth/signin
14:25:55:71
2022-05-17T04:25:56.345Z    9224560d-5da7-4630-8ecf-2c93d7755e57    ERROR    Error: Dynamic require of "stream" is not supported
    at file:///var/task/index.js:12:9
    at node_modules/node-fetch/lib/index.js (file:///var/task/index.js:7860:35)
    at __require2 (file:///var/task/index.js:18:50)
    at node_modules/cross-fetch/dist/node-ponyfill.js (file:///var/task/index.js:8927:21)
    at __require2 (file:///var/task/index.js:18:50)
    at node_modules/@supabase/gotrue-js/dist/main/lib/helpers.js (file:///var/task/index.js:8981:41)
    at __require2 (file:///var/task/index.js:18:50)
    at node_modules/@supabase/gotrue-js/dist/main/GoTrueApi.js (file:///var/task/index.js:9090:21)
    at __require2 (file:///var/task/index.js:18:50)
    at node_modules/@supabase/gotrue-js/dist/main/index.js (file:///var/task/index.js:10191:39)
2022-05-17T04:25:56.349Z

Does anyone have any ideas?

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Hi Are you using Supabase on server side or client side? @AlanK

AlanK (2022-05-17)

Server side endpoint

Do you have the same error with Node14 or 15?

Thank you for responding @Olyno - Node 16 does seem to be a key here but it is now required for Sveltekit (it seems). I have also been advised of this:

So the problem came from the vercel adapter right?

Yes the vercel adapter - I haven't reverted yet but I think we can call it solved in this channel 🙂