v3.0.3

Fixed

• Restored constructor-based snapshot copying for Uint8Array after the 3.0.2
  view-and-slice strategy regressed large-body copy latency in workerd, and
  adopted constructor-based copies for direct ArrayBuffer and all
  ArrayBufferView bodies.
• Fixed typed-array and DataView snapshots to use intrinsic view state. This
  rejects out-of-bounds non-Uint8 typed arrays instead of signing empty bodies
  and prevents non-Uint8 typed-array and DataView subclass accessors from
  substituting different bytes.

Correction — 2026-08-12

• This release note was corrected after publication. Versions before 3.0.3
  could snapshot out-of-bounds non-Uint8 typed arrays as empty bodies or allow
  non-Uint8 typed-array and DataView subclass accessors to substitute different
  bytes. Users of earlier versions should upgrade to 3.0.3 or later.
• Version 3.0.2 changed the Uint8Array copy strategy to an intrinsic base view
  followed by slice(). That retained exact bounds and isolated subclass hooks
  for Uint8Array, but regressed large-body copy latency in workerd. Version
  3.0.3 restored constructor copying while retaining and extending the intrinsic
  bounds and subclass isolation across supported binary views.