I've started experiencing these issues after adding Sanity to my Next.js/Typescript app.
Cannot get final name for export 'Observable' of __barrel_optimize__?names=Observable,lastValueFrom!=!./node_modules/rxjs/dist/esm5/index.js
This is probably related to some issue with Next.js optimizePackageImports feature and the way the imports are done in the @sanity/client package.
Similar issue here: https://github.com/vercel/next.js/issues/55818
Is there any known workaround to solve this? Thanks :)
"@sanity/client": "^6.9.1",
"next-sanity": "^7.0.1",
UPDATE
Downgrading to next-sanity: 3.1.9 temporarily solved the build issue for me.