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Jest with Vue.js and Babel Unknown Option

April 7, 2020

I was trying to run a Jest unit test against a vue.js component. I was getting the following error:

 FAIL  src/components/UserList.spec.js
  ● Test suite failed to run

    ReferenceError: [BABEL] unknown: Unknown option: C:\Users\drumcoder\app\node_modules\@vue\cli-plugin-babel\preset.js.overrides. 
    Check out http://babeljs.io/docs/usage/options/ for more information about options.

    A common cause of this error is the presence of a configuration options object without the corresponding preset name. Example:

    Invalid:
      `{ presets: [{option: value}] }`
    Valid:
      `{ presets: [['presetName', {option: value}]] }`

    For more detailed information on preset configuration, please see https://babeljs.io/docs/en/plugins#pluginpresets-options.

I managed for fix this by updating to a later version of babel-core

npm install babel-core@^7.0.0-bridge.0

Tags: javascript vue vue.js jest babel unittest test spec js