fix: stop the dev toolbar from reporting benign ResizeObserver loop - #2240
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ResizeObserver loopResizeObserver loop
brenelz
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Jul 26, 2026
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Brings the v2 rc line (through 2.0.0-rc.6) into the Solid 2 branch. Ported main features onto the Solid 2 architecture: - Server-function error handler (#2262): wired through handleServerFunctionRequest's transformResult hook and the solid-start:server-fn-error-handler virtual module. - Custom seroval plugins (#2250): serialization.plugins now feeds the @solidjs/web codec on both the client transport and the server handler. - ~ alias fix for workspace packages (#2239): adopted appRootAlias in place of the global resolve.alias entry. - Dev toolbar (#2049, replaces the dev overlay): ported to Solid 2 (Errored/Loading, onSettled, two-arg createEffect, draft-mutation stores, terracotta 2 subpath imports, @solidjs/web Portal/Dynamic/JSX, createMemo(async) instead of createResource). Protocol-specific pieces (SerovalChunkReader, body-format markers) moved local to the toolbar. - Deferred stream response via h3 iterable() (#2231), StartHandler type (#2234), routerLoad restore (#2228), nonce on streaming redirect script (#2252), ResizeObserver-loop filter (#2240) all kept. Kept deleted (superseded by vite-plugin-solid / @solidjs/web / @solidjs/router server-function integration): fs-routes tree-shake, manifest.ts, directives, fns serialization/registration/shared and their specs. Fixes main landed in those files (#2249, #2238, #2243, #2245, #2241, #2261) live upstream now and are tracked for porting there. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Browsers dispatch
ResizeObserver loop completed with undelivered notificationsas a windowerrorevent with noerrorobject. The dev toolbar's handler didpushError(error.error ?? error), so it fell through to the rawErrorEvent, logged it to the console as a stacklessErrorEvent, and calledsetContent("err"), forcing the error panel open over the app on every resize.Guards the handler against stackless
ResizeObserver loopevents. Kept narrow on purpose: other stackless non-Errorevents (cross-originScript error.) are still captured, which can be revisited separately.Verification
Ran the repro from the issue in dev mode and drove viewport resizes with Playwright.
Before: 5 captured errors, panel auto-opened,
[error] ErrorEventin console.After: zero captured errors, error button stays disabled, app renders normally.