cloudflare/workers-sdk miniflare@4.20260617.1

miniflare@4.20260617.1

Repository: cloudflare/workers-sdk

Tag: miniflare@4.20260617.1

Published: 2026-06-19T13:30:41Z

Prerelease: no

Release notes:

Patch Changes

• #14118 `b38823f` Thanks @aicayzer! - Fix Uint8Array step outputs in local Workflows being persisted with the full backing ArrayBuffer

A Uint8Array returned from a Workflows step under wrangler dev was serialised together with its full underlying ArrayBuffer, causing a raw SQLITE_TOOBIG error at view sizes well below the documented 1MiB step-output limit. For example, a 200KB view sliced from an 800KB buffer (a common pattern from crypto.getRandomValues or arr.slice(...) on a larger pool) would fail. The view's bytes are now copied to a tight buffer before persistence, bringing local behaviour in line with production. Fixes #14101.