v1.4.0 of fdb

2026-04-30T08:34:37.257679Z

1.4.0 was published on Apr 30, 2026.

Changelog excerpt:
### New commands

- `fdb crash-report`— fetches OS-level crash and OOM records from the system log (Android logcat, iOS Console, macOS unified log), filtered to the running app
- `fdb ext list`— enumerates all registered VM service extensions across isolates
- `fdb ext call <method>`— invokes any VM service extension and prints the JSON result
- `fdb mem`— shows heap totals (usage, external, capacity) per isolate with human-readable formatting
- `fdb mem --json`— same as above in machine-readable JSON
- `fdb mem profile`— captures an allocation profile snapshot to a file
- `fdb mem diff`— diffs two allocation profile snapshots and reports allocation changes

### Improvements

- `fdb launch`smoke readiness detection now uses `fdb wait`instead of a manual poll loop, making it more reliable and readable

### Fixes

- `fdb describe`now surfaces all `GestureDetector`and `InkWell`widgets at any nesting depth inside `Stack`/`Positioned`; previously the walk stopped at the first interactive an[...]