Must use import to load ES Module

- 에러 내용

 

15:18:59.715 [19766] error: uncaughtException: Must use import to load ES Module: /Users/yohank/PROJECT/paycoq-project/messaging-pay/node_modules/node-fetch/src/index.js

require() of ES modules is not supported.

require() of /Users/yohank/PROJECT/paycoq-project/messaging-pay/node_modules/node-fetch/src/index.js from /Users/yohank/PROJECT/paycoq-project/messaging-pay/routes/auth/token/modules/certification.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.

Instead rename index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from /Users/yohank/PROJECT/paycoq-project/messaging-pay/node_modules/node-fetch/package.json.

 

- 발생 원인

 

node-fetch의 버전이 node 버전과 호환되지 않아서 생긴 오류

node 14v에서 fetch 함수를 사용했을 때 발생하는 오류였다.

 

"node-fetch": "^3.2.3",

 

- 해결

 

node-fetch 버전 다운그레이드

npm install node-fetch@2

 

"node-fetch": "^2.6.7"