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In Latest Expo version can dynamic config app.config.js
see: https://docs.expo.io/workflow/configuration/#dynamic-configuration-with-appconfigjs
In some case, we need change app.json variable for staging channel (like bundleIdentifer, icon , etc...)
But expo hasn't flavor function.
I try to generate app.json per publish.
build app.json
First, we write JSON override config.
app-staging-override.json
{
"expo": {
"slug":"my-application-staging"
"ios": {
"bundleIdentifier": "com.foo.baz.staging"
}
}
}
}
Next we write app.json generator script.
bin/generate-staging-app-json.js
const merge = require("deepmerge")
const baseAppJson = require("../app.json")
const override = require("../app-staging-override.json")
const merged = merge.all([baseAppJson, override])
console.log(JSON.stringify(merged, null, 2))
This script is so simple. this merge app.json and ../app-staging-override.json and output stdout.
Finally, append prebuild script on package.json.
"scripts:"{
"prebuild:ios:staging": "node bin/generate-staging-app-json.js > app.staging.generated.json",
"build:ios:staging": "expo build:ios --config app.staging.generated.json --type archive --release-channel=YOUR_STAGING_CHANNEL "
}
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