Refactor build logic

[simolus3]

This changes builds for powersync packages to make published libraries easier to debug:

1. Unconditionally emit source maps (todo: test).
2. Unconditionally disable minification. This seems to be what most other libraries are doing as well, users are likely to be running minifiers for prod builds anyway.
3. Bundle fewer dependencies: Dependencies which don't require polyfills don't really need to be bundled. By not bundling them, there's a potential for reducing application code size if other packages also depend on PowerSync-dependencies (because the libraries would be de-duplicated in that case).

Listing all packages:

• adapter-sql-js: Bundle our custom sql.js fork, no longer bundle async-mutex. Use source maps, non-minified builds.
• attachments: Enable source maps.
• capacitor: TODO
• common:
  • We had to inject a TextDecoder polyfill when we were still using can-ndjson-stream. We're not doing that anymore, I've added a createTextDecoder() method on AbstractRemote that the react-native package can override. This avoids us having to bundle that polyfill on all platforms.
  • I've adopted conditional exports and a separate Node build to stop bundling the buffer package for Node (we can and should just use node:buffer instead).
  • We should bundle js-logger (because it's a legacy UMD module that's hard to integrate) and rsocket (because it references Buffer as a global and we need to rewrite that to imports). However, I don't see why we would want to bundle async-mutex, buffer or event-iterator. These don't seem to create any issues, and this marks them as external again.
  • Side-node: There's more work to be done here. For instance, we can stop depending on BSON after removing the legacy sync client. I also think we should look into only supporting WebSockets on React Native to not pay the rsocket cost for all SDKs.
• drizzle-driver: Enable source maps.
• kysely-driver: Enable source maps.
• node: Replace async-locks with async-mutex (that package is already used in common).
• powersync-op-sqlite: No changes necessary.
• react: Enable source maps.
• react-native: Enable source maps, disable minification.
• tanstack-react-query: Enable source maps.
• vue: Enable source maps.
• web: Update dependencies.

TODOS:

• Test packages.
• Test vite web demo.
• Test webpack web demo.
• Test react native demo.
• Test react native web demo.
• Test node demo.
• Test node electron demo.
• Test pre-release / published packages to ensure source maps don't cause vite warnings.

[changeset-bot]

🦋 Changeset detected

Latest commit: 84d33ce

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 14 packages

Name	Type
@powersync/tanstack-react-query	Patch
@powersync/op-sqlite	Patch
@powersync/adapter-sql-js	Patch
@powersync/drizzle-driver	Patch
@powersync/kysely-driver	Patch
@powersync/react-native	Patch
@powersync/diagnostics-app	Patch
@powersync/attachments	Patch
@powersync/capacitor	Patch
@powersync/common	Patch
@powersync/react	Patch
@powersync/node	Patch
@powersync/vue	Patch
@powersync/web	Patch

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[stevensJourney]

🥳 This is very very nice. Glad to see these improvements.

I left some minor comments.

I did some basic smoke testing with the React Native and React Supabase Todolist apps. those seem to work fine 😄