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Ports @royeden's frameloop utilities from #824 to Solid 2.0 on next. The original commits were written against Solid 1.x and don't apply to next, so this is a port, with credit via a Co-authored-by trailer and in the changeset. Supersedes #824.
New primitives
createCallbacksSet combines several callbacks into one, backed by a ReactiveSet, so they can share a single createRAF loop and its timestamp.
useGlobalRAF returns a factory for callbacks that share one global requestAnimationFrame loop held in a hydratable singleton root. Each call returns [added, add, remove, running, start, stop]. startWhenAdded (a boolean or accessor) starts the loop when the callback is added. The loop stops when the last added callback is removed, and callbacks are removed on cleanup.
createScheduledLoop wraps an external frameloop scheduler (for example motion's frame) in the same [running, start, stop] shape as createRAF, and stops it on cleanup.
Fixes in createRAF
requestID is now number | null. stop() only cancels a request that was actually made, so it no longer calls cancelAnimationFrame(0) (from feat(raf): add frameloop utils. #824).
start() checks requestID instead of running(). In Solid 2 a signal write stays pending until the next flush, so two start() calls in the same tick both saw false and started two loops. useGlobalRAF hit this as soon as two callbacks were added with startWhenAdded. createScheduledLoop uses the same guard.
Ported to Solid 2: isServer from @solidjs/web, ownedWrite on the running signals, and add/remove run untracked.
useGlobalRAF's remove only stops the loop if this callback was in the set, so disposing a callback that was never added doesn't stop a loop started manually.
Fixed the motion example: frame.render returns nothing and cancelFrame takes the callback itself, so schedule returns the callback as its ID. This is noted in the JSDoc and README.
Added an explicit GlobalRAFCallbackFactory type, which the build requires.
Added the three names to primitive.list and shortened the useGlobalRAF docs, as asked in review.
Tests
Rewrote the tests for Solid 2: flush() after signal writes, every root disposed after each test, and no vi.waitUntil. The createScheduledLoop dispose test now calls createScheduledLoop instead of createRAF.
Added regression tests for cancelAnimationFrame(0), double start() before a flush, removing a callback that was never added, the accessor form of startWhenAdded, and a scheduler that cancels by callback, as motion's does.
…(port of solidjs-community#824)
Ports royeden's frameloop utils from solidjs-community#824 to Solid 2.0.
- createCallbacksSet: combine callbacks into one, backed by ReactiveSet
- useGlobalRAF: callbacks sharing one rAF loop in a hydratable singleton root
- createScheduledLoop: [running, start, stop] wrapper for external schedulers
(e.g. motion's frame); docs return the callback as the ID for cancelFrame
createRAF fixes:
- requestID is number | null; stop() no longer calls cancelAnimationFrame(0)
- start() guards on requestID instead of running(), whose write is pending
until flush, so two start() calls in one tick no longer start two loops
Co-authored-by: Roy Eden <roy.ede@gmail.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Walkthrough
The RAF package fixes pending-frame tracking in createRAF and adds createCallbacksSet, useGlobalRAF, and createScheduledLoop. The package README, metadata, and tests are updated for these utilities and the revised loop behavior.
createRAF now uses null when no frame is pending. Repeated starts do not schedule duplicate loops, and stop() cancels only an existing request. Tests cover stopping, disposal, and callback timestamps.
createCallbacksSet dispatches to callbacks in a ReactiveSet. useGlobalRAF registers callbacks with a shared loop, supports start-when-added behavior, and removes callbacks during cleanup. Documentation and tests cover these APIs and server behavior.
createScheduledLoop adapts a scheduler and cancellation function to running, start, and stop controls. Tests cover request cancellation and server-side behavior. The README documents its scheduler ID requirement.
The new createScheduledLoop helper only keeps animating if the supplied scheduler repeats its callback itself. A one-shot scheduler such as requestAnimationFrame runs a single frame and then stalls while reporting that it is running. Clarify or fix this before merging. Registering the same callback twice with useGlobalRAF can also let one owner's cleanup silently remove the other's registration.
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Actionable comments posted: 4
Fix comments: Fix CodeRabbit comments on this PR
Prompt to fix all issues
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Inline comments:
Review comments at @packages/raf/README.md:
- Line 193: Update the README example’s immediate running() read to occur after
the pending signal write has been flushed, so it demonstrates the resulting true
value rather than implying the value changes synchronously.
Review comments at @packages/raf/src/index.ts:
- Line 75: Update the dispatcher returned by the function in this diff so its
type is (...args: Parameters<T>) => void rather than T; preserve the existing
callback iteration and callbacksSet return value.
- Line 125: The shared callbacksSet entry lets one owner’s remove or cleanup
unregister the same callback for another owner; update the registration logic
around callbacksSet.add so each factory call has independent ownership, using a
distinct registered wrapper or per-registration counts and state. Preserve the
shared loop’s behavior, stopping it only when no active registrations remain.
- Line 180: Update the callback scheduling flow around requestID and schedule so
a one-shot scheduler enqueues the next callback after each frame, keeping the
loop active until stopped. Preserve the existing stop and running-state
behavior, and do not rely on schedule being self-repeating.
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Ports @royeden's frameloop utilities from #824 to Solid 2.0 on
next. The original commits were written against Solid 1.x and don't apply tonext, so this is a port, with credit via aCo-authored-bytrailer and in the changeset. Supersedes #824.New primitives
createCallbacksSetcombines several callbacks into one, backed by aReactiveSet, so they can share a singlecreateRAFloop and its timestamp.useGlobalRAFreturns a factory for callbacks that share one globalrequestAnimationFrameloop held in a hydratable singleton root. Each call returns[added, add, remove, running, start, stop].startWhenAdded(a boolean or accessor) starts the loop when the callback is added. The loop stops when the last added callback is removed, and callbacks are removed on cleanup.createScheduledLoopwraps an external frameloop scheduler (for example motion'sframe) in the same[running, start, stop]shape ascreateRAF, and stops it on cleanup.Fixes in
createRAFrequestIDis nownumber | null.stop()only cancels a request that was actually made, so it no longer callscancelAnimationFrame(0)(from feat(raf): add frameloop utils. #824).start()checksrequestIDinstead ofrunning(). In Solid 2 a signal write stays pending until the next flush, so twostart()calls in the same tick both sawfalseand started two loops.useGlobalRAFhit this as soon as two callbacks were added withstartWhenAdded.createScheduledLoopuses the same guard.Changes from #824
isServerfrom@solidjs/web,ownedWriteon the running signals, andadd/removerun untracked.useGlobalRAF'sremoveonly stops the loop if this callback was in the set, so disposing a callback that was never added doesn't stop a loop started manually.frame.renderreturns nothing andcancelFrametakes the callback itself, soschedulereturns the callback as its ID. This is noted in the JSDoc and README.GlobalRAFCallbackFactorytype, which the build requires.primitive.listand shortened theuseGlobalRAFdocs, as asked in review.Tests
flush()after signal writes, every root disposed after each test, and novi.waitUntil. ThecreateScheduledLoopdispose test now callscreateScheduledLoopinstead ofcreateRAF.cancelAnimationFrame(0), doublestart()before a flush, removing a callback that was never added, the accessor form ofstartWhenAdded, and a scheduler that cancels by callback, as motion's does.server.test.tscovers the three new exports.Verification
pnpm --filter @solid-primitives/raf test: 16 passedpnpm --filter @solid-primitives/raf test:ssr: 6 passedtsc --noEmit,pnpm lintandpnpm -w buildare clean.Changeset: minor bump for
@solid-primitives/raf.Not included: the
createFrameSchedulerredesign suggested in #824. It can be a follow-up.Summary by CodeRabbit
createRAFso stopping without a pending frame does not cancel an invalid request.