[BUG] v4 Malformed Datafile #347

Is there an existing issue for this?

• I have searched the existing issues

SDK Version

4.0.1

Current Behavior

When upgrading from v3 → v4, the SDK stored the datafile in AsyncStorage under the same key (opt-datafile-{sdkKey}) in both versions. However, v4 introduced stricter validation of the datafile format.
On the first launch after the upgrade, v4 would read the v3-format datafile from AsyncStorage, fail validation, and log:
ERROR ProjectConfigManager: Datafile is invalid because it is malformed.

Expected Behavior

v4 SDK parses datafile from v3 SDK without errors.

Steps To Reproduce

1. on v3, initialize the SDK, datafile is saved to storage.
2. update SDK to v4, reinitialize the app.

React Framework

react-native 0.81.5

Browsers impacted

No response

Link

No response

Logs

ERROR: ProjectConfigManager: Datafile is invalid because it is malformed

Severity

No response

Workaround/Solution

Clean up an existing datafile before fetching a v4 one.

Recent Change

No response

Conflicts

No response