JetBrains WebStorm Jest encountered an unexpected token - html

Question

I have a problem with running a simple project in WebStorm IDE. This is what I get when I hit run:
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:
• 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:
/home/patryk/WebstormProjects/Case Converter/node_modules/hs-test-web/hstest/stage/stageTest.js:12
runner = new PureJsApplicationRunner();
^
SyntaxError: Unexpected token =
at ScriptTransformer._transformAndBuildScript (node_modules/jest/node_modules/jest-runtime/build/script_transformer.js:403:17)
at Object.<anonymous> (node_modules/hs-test-web/hstest/index.js:1:110)
At this moment, my project contains just 1 html file. I tried reinstalling nodejs and npm, but that didn't work

Answer 1

Good time of day,
I've encoutered the same problem with one Edu project in WebStorm IDE - when i pressed the "check" button for task - i've got issue:
"test suite failed to run
Jest encountered an unexpected token ..."
How it was solved:
Please check if nodejs and npm installed - At IDE: File\Settings, section: Languages & frameworks > nodejs and npm section > at field: "Node interpreter" you'll find something like : "node /usr/bin/node" and at field: "Package manager" the value "npm /usr/share/npm"
In IDE - you need to expand "Project pane" and to choose view mode "Project Files" - then you need open the file "package.json",
initially this file contains the code:
{
"devDependencies": {
"#types/jest": "^23.3.12",
"hs-test-web": "https://github.com/hyperskill/hs-test-web/archive/release.tar.gz",
"jest": "^27.3.1",
"puppeteer": ">=8.0.0"
},
"scripts": {
"test": "jest"
}
}
You need to add the section for "jest" - please found the complete package.json below
{
"devDependencies": {
"#types/jest": "^23.3.12",
"hs-test-web": "https://github.com/hyperskill/hs-test-web/archive/release.tar.gz",
"jest": "^27.3.1",
"puppeteer": ">=8.0.0"
},
"scripts": {
"test": "jest"
},
"jest": {
"verbose": true,
"moduleFileExtensions": [
"ts",
"tsx",
"js",
"jsx",
"json"
],
"transform": {
"^.+\\.jsx?$": "babel-jest",
"^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
},
"transformIgnorePatterns": ["/node_modules/(?!lodash-es)"],
"testRegex": "test/.*\\.spec\\.ts$"
}
}
So,i hope it help you.