TypeError: nodes.flatMap is not a function

 

TypeError: nodes.flatMap is not a function

 

flatMap, nodejs 12

 

sudo apt update

curl -fsSL https://deb.nodesource.com/setup_12.x | sudo -E bash -

sudo apt install -y nodejs

 

TS7016: Could not find a declaration file for module 'morgan'
-> npm install --save-dev @types/express @types/morgan

sh: nodemon: command not found
-> npm install -g nodemon

failed to start process, "ts-node" exec not found
-> npm install -g ts-node

TS7016: Could not find a declaration file for module 'compression'.
-> npm install --save-dev @types/express @types/compression

TS2304: Cannot find name 'dotenv'
-> npm install dotenv 
-> import dotenv from 'dotenv';

https://maruzzing.github.io/study/graphql/Apollo-Express-GraphQL-API-%EC%84%9C%EB%B2%84-%EB%8F%84%EC%9E%85%ED%95%98%EA%B8%B0-(feat.Typescript)/ 

Apollo Express GraphQL API 서버 도입하기 (feat.Typescript)

 

https://www.daleseo.com/graphql-apollo-server-auth/

GraphQL 서버의 사용자 인증/인가 (Apollo Server Authentication/Authorization)