How start node app manually without using shopify node serve

I’m using shopify-cli version 2.4.

I initialize source with shopify-cli command “shopify node create”.

During development, I have to rerun command “shopify node serve” when I change code on folder server, with become a hassle because that command re-compile both frontend and backend and update ngrok url again and install app again.

Is there anyway to solve this problem.

I do noted there’s is a command in package.json to start backend. But no command to start frontend.

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