Upgrading jest 20 to 21
Breaking20.0.4 → 21.2.1Platform1Deprecated1New35Changed52Fixed65Other46
BreakingUpgrade verdict
A platform requirement change.
In plain terms
- You now need to install babel-core yourself if you rely on it, which lets Jest work with Babel 7.
- Deprecates the functional ignorePattern in jest-haste-map and includes it in the cache key.
Must act 2 items need code or config changes
Installs 505 packages in all (was 343).
What you must change
Platform1
Changes babel-core to a peerDependency for compatibility with Babel 7.
babel-coreDeprecations to plan for
Deprecated1
Deprecates the functional ignorePattern in jest-haste-map and includes it in the cache key.
jest-haste-mapignorePattern