Proof

expo-task-manager

real upstream package — not intercepted. the app's expo-task-manager JS runs over the ExpoTaskManager native module. isAvailableAsync returns false on web per upstream's documented unavailable shape (TaskManager.ts:286), so apps with graceful-degradation paths skip background-task registration correctly. Peach is exactly as capable here as real expo-on-web (full JS surface + the same documented unavailable shape) — the only gaps are background execution primitives no browser has.

93%

API coverage

No visual proof cases have been published for this package yet. The registry summary below describes what the compat layer implements.

Working (10)

upstream defineTask/isTaskDefined validationnative EVENT_NAMEisAvailableAsync (false on web)isTaskRegisteredAsyncgetTaskOptionsAsyncgetRegisteredTasksAsyncunregisterTaskAsyncunregisterAllTasksAsyncnotifyTaskFinishedAsyncnative task execution events

Missing (3)

persistent native EXTaskService storageapp relaunch/headless executionreal task execution while the browser tab is suspended (browsers do not have iOS Background Fetch / Android WorkManager)