Is there a way to run bash script before yarn checks registry auth token

[Venikeee1]

I am using aws's codeartifact to store packages and CODEARTIFACT_AUTH_TOKEN approach to set an auth token. Thus I have to write export CODEARTIFACT_AUTH_TOKEN=$(aws codeartifact get-authorization-token ...) each time token expires. I automated this process by adding bash script (lets name it dev.sh) which contains export CODEARTIFACT_AUTH_TOKEN ... in it. Then in package.json I added

{
  "scripts": {
     "start": `sh ./dev.sh && react-scripts start`
  }
}

Problem is when i run yarn start it throws an error of incorrect CODEARTIFACT_AUTH_TOKEN

Here is .npmrc

//path-to-registry/:_authToken=${CODEARTIFACT_AUTH_TOKEN}
//path-to-registry/:always-auth=true
@compstak:registry=https://path-to-registry

Here is dev.sh

#!/bin/sh
export CODEARTIFACT_AUTH_TOKEN=$(aws codeartifact get-authorization-token --domain **** --domain-owner **** --query authorizationToken --output text --region us-east-1);

Is there a way to tell yarn do not check for CODEARTIFACT_AUTH_TOKEN for some scripts?