react-native 0.64.0 - Jest testing fails when testing component with icon
See original GitHub issue- Search for existing issues (including closed ones): https://github.com/oblador/react-native-vector-icons/issues
- Review the documentation: https://github.com/oblador/react-native-vector-icons
Environment
react-native-vector-icons version: 8.1.0
System:
OS: macOS 11.2.2
CPU: (8) x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
Memory: 2.26 GB / 16.00 GB
Shell: 5.8 - /bin/zsh
Binaries:
Node: 15.11.0 - /var/folders/n0/xlj5zhn56tl42517807ctnl40000gn/T/yarn--1616165407310-0.13720577253664556/node
Yarn: 1.22.10 - /var/folders/n0/xlj5zhn56tl42517807ctnl40000gn/T/yarn--1616165407310-0.13720577253664556/yarn
npm: 7.6.0 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
Managers:
CocoaPods: 1.10.1 - /usr/local/bin/pod
SDKs:
iOS SDK:
Platforms: iOS 14.4, DriverKit 20.2, macOS 11.1, tvOS 14.3, watchOS 7.2
Android SDK: Not Found
IDEs:
Android Studio: 4.1 AI-201.8743.12.41.7042882
Xcode: 12.4/12D4e - /usr/bin/xcodebuild
Languages:
Java: 11.0.10 - /usr/bin/javac
npmPackages:
@react-native-community/cli: Not Found
react: 17.0.1 => 17.0.1
react-native: 0.64.0 => 0.64.0
react-native-macos: Not Found
npmGlobalPackages:
*react-native*: Not Found
Description
yarn test
fails in brand new RN 0.64.0 project with icon added to App component. With RN 0.63.4 this works fine.
Demo
https://github.com/josmithua/react-native-0.64.0-jest-fail-with-rn-vector-icons (created with command: npx react-native init JestTest --template react-native-template-typescript
)
yarn
yarn test
Output:
yarn run v1.22.10
$ jest
FAIL __tests__/App-test.tsx
● Test suite failed to run
Jest encountered an unexpected token
This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.
By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".
Here's what you can do:
• If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/en/ecmascript-modules for how to enable it.
• To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
• If you need a custom transformation specify a "transform" option in your config.
• If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.
You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html
Details:
/Users/joshua/code/JestTest/node_modules/react-native-vector-icons/Ionicons.js:6
import createIconSet from './lib/create-icon-set';
^^^^^^
SyntaxError: Cannot use import statement outside a module
28 | } from 'react-native/Libraries/NewAppScreen';
29 |
> 30 | import Icon from 'react-native-vector-icons/Ionicons';
| ^
31 |
32 | const Section: React.FC<{
33 | title: string;
at Runtime.createScriptFromCode (node_modules/jest-runtime/build/index.js:1350:14)
at Object.<anonymous> (App.tsx:30:1)
Test Suites: 1 failed, 1 total
Tests: 0 total
Snapshots: 0 total
Time: 1.792 s
Ran all test suites.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
Issue Analytics
- State:
- Created 3 years ago
- Reactions:5
- Comments:22
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Top GitHub Comments
Actually to get it to work, I had to also add
@react-native
to the pattern, so it looks like this:Looks like the react-native team moved some of their code to a new package in v0.64.0,
@react-native/polyfills
, which needs transformed as well.@josmithua I realized I’ve made a mistake. Basically I had a part of the jest configuration in package.json and a more detailed configuration in jest.config.es. I’ve removed the package.json part and left the jest config file. Thank you 😃
Now my jest.config.es :