Doing automated Git Flow branch deploys on their own Expo release channels with Bitbucket Pipelines


  • I have an Expo based React Native app that i publish with expo publish
  • I follow git flow branch naming and structure
  • I gave multiple people working on plenty of features that we need to test separately

what i want

Publish every branch to it's own release channel automatically

the issue

Because i'm using Git Flow, the branch naming is feature/my-awesome-branch. I can get the branch name with a built-in pipeline variable, but the / after feature doesn't work with Expo release channel naming. You can't have a / in a release channel name..

[06:23:47] Release channel name can only contain lowercase letters, numbers and special characters . _ and -

the solution

  • Get the branch name with ${BITBUCKET_BRANCH}, do some sed magic to remove / in the name, and voila!

the code

  - step:
      name: Publish to Expo
      deployment: feature
        - npm
        - unset NPM_CONFIG_USER
        - npm ci
        - npm install -g --unsafe-perm expo-cli
        - expo login -u ${EXPO_USERNAME} -p ${EXPO_PASSWORD}
        - RELEASE_CHANNEL_FEATURE=$(echo ${BITBUCKET_BRANCH} | sed 's|feature/|feature_|')
        - expo publish --clear --release-channel ${RELEASE_CHANNEL_FEATURE} # RELEASE_CHANNEL is a based on branch name (feature/my-feature => feature_my-feature)

Please note that this site and the posts on it are, and will always be, a work in progress. If i waited for perfection, i’d never get anything done.