Search code examples
expovercel

Vercel dynamic build command based on stage

I have an Expo app where the web component is hosted through Vercel. I use the Vercel GitHub integration for automatic deployment. Expo has a different build command for staging builds and production builds, and it doesn't appear Vercel supports environment/staging based build commands. I'm wondering if I'm possibly missing something and this is possible or anyone has another way of handling this?

Solution

  • I was in a similar situation and managed to solve it with a shell script.

    Here is an example you can try out:

    #!/bin/bash
 
if [[ $VERCEL_ENV == "production"  ]] ; 
then 
  echo "Building production"
  yarn build:production
else 
  echo "Building staging"
  yarn build:staging
fi

    And lets say you called the file vercel.sh, you would configure vercel buildCommand to be sh vercel.sh.

    Basically, from the shell script you'll be able to use any of the system environment variables vercel provides.