●Change8

Migrating to Jest v30.0.0-beta.3

Version v30.0.0-beta.3 introduces 1 breaking change. This guide details how to update your code.

Released: 5/27/2025

1
Breaking Changes
4
Migration Steps
9
Affected Symbols

⚠️ Check Your Code

If you use any of these symbols, you need to read this guide:

_importCoreModulejest-environment-nodejest-haste-mapobjectContainingcalledWithexpect.ArrayOfAggregateErrordeepCyclicCopyReplaceableworker

Breaking Changes

●Issue #1

Dropped support for Node.js version 16. Projects must upgrade to Node.js >=18 to use Jest 30.

Migration Steps

  1. 1
    Upgrade your runtime to Node.js >=18, as Jest 30 no longer supports Node 16.
  2. 2
    If you pin jsdom version, update it to ^26.0.0 or later.
  3. 3
    Run your test suite after upgrading to identify any regressions caused by the dropped Node 16 support.
  4. 4
    Review any custom jest-haste-map configurations for compatibility with the new handling of multiple configs.

Release Summary

Jest 30 drops Node 16 support, updates jsdom to v26, mitigates memory leaks, and introduces a new ArrayOf matcher while fixing numerous bugs.

Need More Details?

View the full release notes and all changes for Jest v30.0.0-beta.3.

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