Sometimes, we want to write a Jest configuration file with JavaScript.
In this article, we’ll look at how to write a Jest configuration file with JavaScript.
How to write a Jest configuration file with JavaScript?
To write a Jest configuration file with JavaScript, we create a module with the config.
For instance, we write
{
//...
"scripts": {
"start": "node server.js",
"dev": "webpack-dev-server --hot --inline",
"test": "jest --config ./jest-config.js",
"build": "webpack",
"postinstall": "webpack"
}
//...
}
to add the test script in package.json.
Then we write
module.exports = {
verbose: true,
setupTestFrameworkScriptFile: "./enzyme.js",
roots: ["../__tests__"],
modulePaths: ["./__stubs__"],
moduleNameMapper: {
".scss$": "scss-stub.js",
},
};
in jest-config.js to create a module with our Jest test config.
Conclusion
To write a Jest configuration file with JavaScript, we create a module with the config.
