Add partial on-demand support and e2e tests to trailbase-db-collectio…

[ignatz]

…n package

Based on #1090 by @MentalGear.

🎯 Changes

Add a syncMode option to the TrailBase collection and adopt e2e tests in line with e.g. electric's.

✅ Checklist

• I have followed the steps in the Contributing guide.
• I have tested this code locally with pnpm test:pr.

🚀 Release Impact

• This change affects published code, and I have generated a changeset.
• This change is docs/CI/dev-only (no release).

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commit: b39e8a7

[MentalGear]

This is great thank you for your work! Could you maybe precise what partial support for on-demand means?On 16 Jan 2026, at 10:48, pkg-pr-new[bot] ***@***.***> wrote:pkg-pr-new[bot] left a comment (TanStack/db#1098) More templates todos tanstack-start-example-basic @tanstack/db-example-paced-mutations-demo tanstack-start-db-projects-example @tanstack/db-example-react-todo @tanstack/db-example-solid-todo @tanstack/angular-db npm i ***@***.******@***.*** @tanstack/db npm i ***@***.******@***.*** @tanstack/db-ivm npm i ***@***.******@***.*** @tanstack/electric-db-collection npm i ***@***.******@***.*** @tanstack/offline-transactions npm i ***@***.******@***.*** @tanstack/powersync-db-collection npm i ***@***.******@***.*** @tanstack/query-db-collection npm i ***@***.******@***.*** @tanstack/react-db npm i ***@***.******@***.*** @tanstack/rxdb-db-collection npm i ***@***.******@***.*** @tanstack/solid-db npm i ***@***.******@***.*** @tanstack/svelte-db npm i ***@***.******@***.*** @tanstack/trailbase-db-collection npm i ***@***.******@***.*** @tanstack/vue-db npm i ***@***.******@***.*** commit: b39e8a7 —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>

[ignatz]

Could you maybe precise what partial support for on-demand means?

I'd rather not :hide:. This change should be seen in the broader context of: #1101, which actually adds full support. "Partial" should be read here as just enough to get the mandatory e2e tests working, while being basically broken. In practice the e2e tests make many insufficient assertions, e.g. on filter queries they will only assert that something is being returned, not "what" is being returned.

[MentalGear]

OK thank you for the honest assessment !