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jest 27 → 28

27.5.1 → 28.1.3. What the package's exports lost, renamed or changed between the two releases, from lurq's extraction of both published tarballs.

jest 28.1.3 removes or renames exports your code may import.

Removed
1
Renamed
0
Signature changes
0
Types removed
0
Newly deprecated
0
Added
0

Does this break your code?

Run this in your project. It compares both releases against the names your code actually imports, locally, with no account and nothing sent to lurq:

npx lurqrun check-upgrade --upgrade jest@27.5.1..28.1.3

To have your coding agent check upgrades like this before it writes them, connect lurq to Claude Code, Cursor, VS Code or Codex:

npx lurqrun

Quickstart

Removed

Gone at runtime, with no replacement found under another name. Imports of these fail.

  • TestWatcherobject

An export diff shows what a release removed or re-signatured, not behaviour changes: read the changelog for those. Extracted Sep 23, 2026. jest on lurq.