인프런 커뮤니티 질문&답변

안녕하세요 강의 잘 듣고 있습니다.

강의를 듣다가 axios를 설치하고 import 하는 과정에서 다음과 같은 문제가 발생했습니다.

구글링을 해보니 jest가 es6를 지원하지 않아서 발생하는 문제라고 하던데 구글링해서 찾아본 방법들은 해결이 되지 않아 문의 드립니다.

 FAIL  src/pages/OrderPage/tests/Type.test.js

  ● Test suite failed to run

    Jest encountered an unexpected token

    Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax.

    Out of the box Jest supports Babel, which will be used to transform your files into valid 

JS based on your Babel configuration.

    By default "node_modules" folder is ignored by transformers.

    Here's what you can do:

     • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it.

     • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript

     • 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/configuration

    For information about custom transformations, see:

    https://jestjs.io/docs/code-transformation

    Details:

    C:\Users\multicampus\Desktop\projects\react-test-app\react-shop-test\node_modules\axios\index.js:1

    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,jest){import axios from './lib/axios.js';

                                                                                      ^^^^^^  

    SyntaxError: Cannot use import statement outside a module

    > 1 | import axios from 'axios';

        | ^

      2 | import React, { useEffect, useState } from 'react'

      3 | import { Products } from './Products';

      4 |

      at Runtime.createScriptFromCode (node_modules/jest-runtime/build/index.js:1728:14)      

      at Object.<anonymous> (src/pages/OrderPage/Type.js:1:1)

      at Object.<anonymous> (src/pages/OrderPage/tests/Type.test.js:2:1)

      at TestScheduler.scheduleTests (node_modules/@jest/core/build/TestScheduler.js:333:13)  

      at runJest (node_modules/@jest/core/build/runJest.js:404:19)