Jest ES6 Error unexpected token import?

Question

Hello how can I use ES6 with Jest. Because they send me a mistake in spread (operator) and export. How to modify jest?

export default function reducer(state={
    open:false
  }, action) {

    switch (action.type) {
      case "HANDLE_TAP_HOME": {
        return {...state,open:action.open}
        
      }
    }

    return state
}

test

import base from '../../client/src/redux/reducer/reducers/Admin/base/Index'

describe('request to Reducer',()=>{
    it('fetch',()=>{
        expect(base(undefiend,{type:'nothing'})).toEqual({
            open:false
        })
    })
})

Have a look at my answer here: Unexpected import token - testing React Native with Jest — Arnold Schrijver
– Arnold Schrijver, Commented Aug 12, 2017 at 7:19
Yes, using the spread syntax with objects in ES6 is a mistake. — Bergi
– Bergi, Commented Aug 12, 2017 at 7:53

vale ale · Accepted Answer · 2017-08-13 06:38:18Z

1

jest configuration file

"jest": {
    "scriptPreprocessor": "<rootDir>/node_modules/jest-babel-preprocessor/preprocessor.js",
    "unmockedModulePathPatterns": [
      "<rootDir>/node_modules/react"
    ]
  }

dependencies

npm i --D jest-cli jest-babel-preprocessor

bye

answered Aug 13, 2017 at 6:38

vale ale

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