Repository navigation
[2.0.0-rc.19] errors disposing createRenderEffect in a microtask after creation. #4444
Closed as not planned
Description
Describe the bug
import { createSignal, createOwner, createRenderEffect, runWithOwner } from 'solid-js';
const cb = () => { }
const o = createOwner()
runWithOwner(o, () => {
createRenderEffect(() => { }, cb, { schedule: true })
queueMicrotask(o.dispose)
})
Uncaught TypeError: Cannot read properties of undefined (reading '_flags')
Your Example Website or App
https://mizulu.users.s.olid.uk/solid2-bug-4444/
Steps to Reproduce the Bug or Issue
repro
Expected behavior
no error
Screenshots or Videos
No response
Platform
.
Additional context
No response
Activity
fix(signals,solid,web): the runtimes' own owners skip createOwner's b…
docs: user-facing createOwner doc, list createScopeOwner in internal.…
chore(size): record #4508's router growth in the batch ledger
chore(size): re-record the ledger after the third 2026-10-30 batch (#…
ryansolid commentedon Oct 30, 2026
Closing as not planned.
createOwnerwas never meant as application API (Solid 1.x had none), and as of #4515 (61bb177) it's typed only throughsolid-js/internalfor the renderers. Itsdisposeis a method, so a detached call throws by design. To host a scope you can dispose from anywhere, usecreateRoot((dispose) => …); itsdisposeis a plain function, soqueueMicrotask(dispose)works. Re-enter the scope withrunWithOwner(getOwner(), …)captured inside it.Generated by Claude Code
refactor(solid): type createOwner only through solid-js/internal (#4515)