Example demonstrating how to create a custom build cache provider for Expo CLI. Uses GitHub to store builds.

1. Create a GitHub Personal Access Token with repo permissions:

   • Go to GitHub Settings › Developer settings › Personal access tokens.
   • Click Generate new token, select the repo scope, and copy the token.
   • Set it in your shell:

     export GITHUB_TOKEN=YOUR_TOKEN_HERE

2. Configure your Expo project:

   • Open app.json.
   • Update the remoteBuildCache block under the expo key:

     {
       "expo": {
         "remoteBuildCache": {
           "provider": "./buildCacheProviderPlugin.js",
           "options": {
             "owner": "<YOUR_GITHUB_USERNAME>",
             "repo": "<YOUR_REPO_NAME>"
           }
         }
       }
     }

   • Replace <YOUR_GITHUB_USERNAME> and <YOUR_REPO_NAME> with your details.

3. Run yarn or npm install

4. Run yarn start or npm run start to try it out.

Tip: If you’d rather not create prereleases in your main repository, point repo to a separate GitHub project or private repo and update the repo option in remoteBuildCache.