Async mode: controlled {#each} throws "Cannot read properties of undefined (reading 'e')" when emptied while another batch is pending

Important limitations

• This may be one public report, not widespread demand.
• Current independent report count: 1.
• This is currently a single independent report. It has not passed clustering or human review as a verified signal.
• No market size, willingness to pay, competition, or trend claims are inferred here.

What was reported

Who is affected

Frontend application developer

Job to be done

Run tests reliably

Workflow

I verified this in a `vitest-browser` test (Chromium) and instrumented `each.js` to confirm the state at the moment of the throw:

Desired outcome

<!-- Must be the ONLY child of its parent element, so the each block is

Severity

low

Urgency

Not enough evidence yet.

Evidence indicators

What would upgrade this

• Additional independent reports from distinct communities or authors.
• Human clustering into a review signal, then explicit publication approval.
• Counter-evidence review and durable original-source verification.

Original source

Open the original public report