Fetch Forge

Monorepo for Transistor Software's Background Fetch SDK ecosystem — native core plus four platform plugins, all orchestrated by a single forge CLI.

Repo map

native/background-fetch/        Native iOS + Android core (TSBackgroundFetch)
react-native/background-fetch/  react-native-background-fetch
cordova/background-fetch/       cordova-plugin-background-fetch
capacitor/background-fetch/     @transistorsoft/capacitor-background-fetch
flutter/background_fetch/       flutter_background_fetch (pub.dev)
forge                           Unified CLI
setup                           First-time setup script

Every platform directory is an independent git repository tracked here as a submodule.

Platform summary

Submodule	Package	Version	Languages
native/background-fetch	TSBackgroundFetch (CocoaPods/SPM)	4.0.6	ObjC (iOS) · Java (Android)
native/background-fetch	com.transistorsoft:tsbackgroundfetch (Maven)	4.0.0	Java
react-native/background-fetch	react-native-background-fetch (npm)	4.2.8	TS · Java · ObjC
cordova/background-fetch	cordova-plugin-background-fetch (npm)	7.2.4	JS · Java · ObjC
capacitor/background-fetch	@transistorsoft/capacitor-background-fetch (npm)	8.0.1	TS · Java · Swift
flutter/background_fetch	background_fetch (pub.dev)	1.5.1	Dart · Java · ObjC

---

Quick start

# Full clone (all submodules)
git clone --recurse-submodules git@github.com:transistorsoft/fetch-forge.git
cd fetch-forge
./setup

# Partial clone (only the platforms you need)
git clone git@github.com:transistorsoft/fetch-forge.git
cd fetch-forge
git submodule update --init native/background-fetch react-native/background-fetch

./setup initialises all submodules and installs npm dependencies for the JS platforms.

---

Forge CLI

./forge help                     # command reference
./forge status                   # version table + submodule overview

Build

./forge build ios                # XCFramework → native/background-fetch/build/Release-Publish/
./forge build android            # assembleRelease AAR
./forge build native             # both ios + android
./forge build react-native       # npm run build (Expo plugin tsc)
./forge build capacitor          # npm run build (tsc + rollup)
./forge build cordova            # npm run build (tsc)
./forge build flutter            # (no-op — pub package)
./forge build all                # everything

Publish

./forge publish native ios                 # CocoaPods + SPM release
./forge publish native android             # Maven Central (Sonatype)
./forge publish native android --snapshot  # Sonatype SNAPSHOT
./forge publish react-native               # npm publish
./forge publish capacitor                  # npm publish
./forge publish cordova                    # npm publish
./forge publish flutter                    # dart pub publish

Note: forge publish will fail if any local iOS links are active. Run forge unlink-ios all first.

Local iOS development

./forge build ios                  # build XCFramework locally first
./forge link-ios react-native      # symlink framework into example app Pods
./forge link-ios flutter           # same for Flutter
./forge link-ios capacitor         # same for Capacitor
./forge link-ios cordova           # same for Cordova
./forge link-ios all               # all of the above

./forge unlink-ios all             # restore remote deps before committing or publishing

Auto-detects CocoaPods vs SPM per target. For CocoaPods it symlinks into Pods/TSBackgroundFetch/; for SPM it rewrites Package.swift to use a local binaryTarget path.

---

Submodule workflow

Changes to platform SDKs must be committed inside the submodule, then the parent repo's pointer is updated separately.

# 1. Work inside the submodule
cd react-native/background-fetch
git checkout -b fix/my-bug
# ... edit, stage, commit, push ...

# 2. Update the parent pointer
cd ../..
git add react-native/background-fetch
git commit -m "chore: bump react-native submodule"

To initialise a submodule that wasn't checked out:

git submodule update --init react-native/background-fetch

Never git add or commit files inside a submodule from the parent repo.

---

Native iOS — build & release

The native XCFramework supports iOS device, iOS Simulator, and Mac Catalyst.

Build

./forge build ios
# Output: native/background-fetch/build/Release-Publish/TSBackgroundFetch_XCFramework_<VERSION>/TSBackgroundFetch.xcframework

Options are forwarded to build-ios.sh:

./forge build ios --version 4.1.0    # override version
./forge build ios --no-catalyst      # skip Mac Catalyst slice

Test locally

./forge build ios
./forge link-ios react-native        # or flutter / capacitor / cordova / all
# → open the example app in Xcode and build
./forge unlink-ios all               # restore before committing

Platform	Example Xcode project
React Native	react-native/background-fetch/example/ios/FetchDemo.xcworkspace
Capacitor	capacitor/background-fetch/example/ios/App/App.xcworkspace
Flutter	flutter/background_fetch/example/ios/Runner.xcworkspace

Release

./forge publish native ios

This runs native/background-fetch/scripts/publish-ios.sh, which:

1. Builds the XCFramework
2. Packages and uploads to GitHub Releases
3. Updates Package.swift checksum
4. Pushes the CocoaPods podspec

---

Native Android — build & release

Build

./forge build android
# Runs: cd native/background-fetch/android && ./gradlew :tsbackgroundfetch:assembleRelease

Release

./forge publish native android             # release to Maven Central
./forge publish native android --snapshot  # publish SNAPSHOT to Sonatype

The version is controlled in native/background-fetch/android/versioning/tsbackgroundfetch.properties.

---

Platform plugins — build & release

React Native

cd react-native/background-fetch
yarn install
./forge build react-native     # compiles Expo plugin TypeScript
./forge publish react-native   # npm publish

Cordova

cd cordova/background-fetch
npm install
./forge build cordova          # tsc
./forge publish cordova        # npm publish

Capacitor

cd capacitor/background-fetch
npm install
./forge build capacitor        # tsc + rollup → dist/
./forge publish capacitor      # npm publish

Flutter

Flutter is a pure Dart package — no build step.

./forge publish flutter        # dart pub publish

---

Versioning

Each platform maintains its own version independently:

Platform	Version source
iOS	native/background-fetch/TSBackgroundFetch.podspec → s.version
Android	native/background-fetch/android/versioning/tsbackgroundfetch.properties → VERSION_NAME
React Native	react-native/background-fetch/package.json → version
Cordova	cordova/background-fetch/package.json → version
Capacitor	capacitor/background-fetch/package.json → version
Flutter	flutter/background_fetch/pubspec.yaml → version

Check all versions at once:

./forge status