I am tying to setup jest with react having typescript .
Whenever I run npm test it gives errors.
npm test gives me the error below:
Out of the box, Create React App only supports overriding these Jest options:
• collectCoverageFrom • coverageReporters • coverageThreshold
• snapshotSerializers.These options in your package.json Jest configuration are not currently supported by Create React App:
• transform • testRegex • moduleFileExtensions
If you wish to override other Jest options, you need to eject from the default setup. You can do so by running npm run eject but remember that this is a one-way operation. You may also file an issue with Create React App to discuss supporting more options out of the box.
I don’t want to eject, and I also want below options to work
• transform
• testRegex
• moduleFileExtensions
What should I do??
my package.json file is as below
{
"name": "appname",
"version": "0.1.0",
"private": true,
"dependencies": {
"jest-cli": "^22.3.0",
"jest-enzyme": "^4.2.0",
"react": "^16.2.0",
"react-scripts": "1.1.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject",
"storybook": "start-storybook -p 9009 -s public",
"build-storybook": "build-storybook -s public"
},
"devDependencies": {
"@storybook/addon-actions": "^3.3.13",
"@storybook/addon-links": "^3.3.13",
"@storybook/addon-storyshots": "^3.3.13",
"@storybook/addons": "^3.3.13",
"@storybook/react": "^3.3.13",
"@types/enzyme": "^3.1.9",
"@types/jest": "^22.1.2",
"@types/react-dom": "^16.0.4",
"@types/storybook__react": "^3.0.7",
"awesome-typescript-loader": "^3.4.1",
"babel-core": "^6.26.0",
"enzyme": "^3.3.0",
"jest": "^22.3.0",
"prettier-eslint": "^8.8.1",
"react-addons-test-utils": "^15.6.2",
"react-dom": "^16.2.0",
"redux": "^3.7.2",
"ts-jest": "^22.0.4",
"ts-loader": "^3.5.0",
"typescript": "^2.7.2",
"typescript-eslint-parser": "^13.0.0"
},
"jest": {
"transform": {
"^.+\\.tsx?$": "ts-jest"
},
"testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
"moduleFileExtensions": [
"ts",
"tsx",
"js",
"jsx",
"json",
"node"
]
}
}
`
configalready exists in your app folder. We cannot continue as you would lose all the changes in that file or directory. Please move or delete it (maybe make a copy for backup) and run this command again.