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Upgrading babel-jest 18 to 19

Breaking18.0.0 → 19.0.0Breaking5New13Changed5Fixed16Other2

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BreakingUpgrade verdict

5 breaking changes.

In plain terms
  • The mocksPattern setting is gone; remove it from your Jest config.
  • The testPathDirs config option is now called roots.
  • Saved snapshot files now include a version marker, so older snapshot files may need updating.
  • React element snapshots are printed differently, so existing snapshots may fail.
Must act Top 3 of 5 that need code or config changes

Installs 134 packages in all (was 127).

What you must change

Breaking5
Removes the mocksPattern configuration option, which never worked correctly.
mocksPattern
19.0.0GitHub ReleaseSummarizedView source
Renames testPathDirs to roots to avoid confusion when configuring Jest.
testPathDirsroots
19.0.0GitHub ReleaseSummarizedView source
Adds a version to snapshots.
19.0.0GitHub ReleaseSummarizedView source
Updates printing of React elements to cause fewer changes when props change.
19.0.0GitHub ReleaseSummarizedView source
Updates snapshot format to properly escape data.
19.0.0GitHub ReleaseSummarizedView source