I have gotten this error on different tests with Jest after some updates of React, and other npm packages, and after I have used a new npm module. I think the problem this time is laying inside the MyApp\node_modules\@redux-saga\core\dist\redux-saga-core.dev.cjs.js:734
. Here is my error, where I have swapped my real project name with MyApp
:
2 ● 2Test suite failed to run
2
2 ;31Jest 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"2 in your config.
2 • If you need a custom transformation specify a "transform"2 option in your config.
2 • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper"2 config option.
2
2 You'll find more details and examples of these config options in the docs:
2 https://jestjs.io/docs/en/configuration.html
;31Details:
MyApp\node_modules\@redux-saga\core\dist\redux-saga-core.dev.cjs.js:734
var state = selector.apply(void 0, [env.TypeError: env.getState is not a function()].concat(args));
^
SyntaxError: Unexpected token :
at ScriptTransformer._transformAndBuildScript (2node_modules/jest-runtime/build/script_transformer.js:403:17)2
2 at Object.<anonymous> (2node_modules/@redux-saga/core/dist/redux-saga-core.cjs.js:6:20)2
2 at Object.<anonymous> (2node_modules/redux-saga/dist/redux-saga-core-npm-proxy.cjs.js:7:28)2
I have tried the different suggestions in the "Here's whar you can do" section. So what else can I do? An my attempts may be in wrong syntax. If you can propose different, concise examples, please do! Tank you very much
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