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Make Jest transform @react-native-community packages by default (face…
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…book#24294)

Summary:
Currently, `react-native` Jest preset will not automatically transpile extracted Lean Core modules (all under `react-native-community` org), so maintainers will likely need to update their docs on how to do that (it's a common pain in RN testing story).

We can make it easier for users and maintainers by adding RNC modules to the `transformIgnorePatterns` whitelist we have in Jest preset. Some of them are not necessary to transpile, but I'd say it's a small sacrifice to make (having first test run possibly slower) for having less friction around migrating to extracted modules.

[General] [Added] - make Jest transform react-native-community/ packages by default
Pull Request resolved: facebook#24294

Differential Revision: D14748962

Pulled By: cpojer

fbshipit-source-id: 36300ee021f03b8c13275a6e0cf28d988ee5beba
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thymikee authored and zhongwuzw committed Apr 9, 2019
1 parent 60e3845 commit c2aa689
Showing 1 changed file with 3 additions and 1 deletion.
4 changes: 3 additions & 1 deletion jest-preset.js
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,9 @@ module.exports = {
'./jest/assetFileTransformer.js',
),
},
transformIgnorePatterns: ['node_modules/(?!(jest-)?react-native)'],
transformIgnorePatterns: [
'node_modules/(?!(jest-)?react-native|@react-native-community)',
],
setupFiles: [require.resolve('./jest/setup.js')],
testEnvironment: 'node',
};

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