Support Angular (or custom worker URLs)

[childersd]

The Angular build system does not seem to correctly pick up worker URLs:

Security Error: Content at http://localhost:4200/ may not load data from file:///.../node_modules/@evolu/common-web/dist/Db.worker.js.

This happens for both the old ("browser") and new ("esbuild"/"application") Angular build systems, regardless of a dev or production build. I suspect this might be because workers are defined inside a factory function. Additionally, if I'm reading your code right, the DB factory relies on the DB worker, which in turn defines the Sync worker. However,

any nested workers will not be processed by the build system. A nested worker is a Worker instantiation within another Worker file.

This only applies to the new build system, but I'm noting it already since it might cause issues later.

A suggestion: instead of supporting a specific framework like Angular, you could allow custom worker URLs to be passed to Evolu. This would allow users to self-host workers separate from their build system. I've seen this pattern before in open-source projects (e.g., a workerSrc property in pdf.js).

Since createEvolu comes from a factory function, I tried to do this myself, but the common-web package doesn't export the required tooling for this (e.g., wrap), and my project won't compile as a result.

I hope we can fix this–I'd love to start with Evolu.

[steida]

I'm happy to help with advice, or I can export missing functionality, but any direct work for supporting Angular has a low priority for me. I highly recommend using any other library; Angular was abandoned even by its authors.

[negue]

There is AngularJS, that was abandoned ^^

Angular (rewritten in TypeScript) is very much alive, latest release yesterday https://github.com/angular/angular/releases/tag/18.2.7

As for the this Issue, I haven't tried it for angular yet, currently more focused on svelte but sooner or later I'll definitely try Angular (with Evolu) again