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](https://stackoverflow.com/a/45058308/8295283) — Arnold Schrijver, Aug 12 '17 at 07:19
Yes, using the spread syntax with objects in ES6 is a mistake. — Bergi, Aug 12 '17 at 07:53

score 1 · Accepted Answer · answered Aug 13 '17 at 06:38

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

Jest ES6 Error unexpected token import?

1 Answers1