Function trackNetwork

trackNetwork(options?: TrackNetworkOptions): () => void
Start tracking network conditions. Safe to call multiple times; returns an uninstaller that removes listeners.
- Adds/updates Datadog global context on changes (optional).
- Emits a sampled Datadog action "network_change" on meaningful changes (optional).
- Listens to navigator.connection (when available) and the online/offline window events.
Parameters
- options: TrackNetworkOptions = {}
Returns () => void
Example
```
import { trackNetwork, isConstrainedNetwork } from "@milliman/dd-ux-utils/env/network";

const stop = trackNetwork({
  reportChanges: true,
  changeSampleRate: 20,
  constrained: { maxDownlinkMbps: 1, effectiveTypes: ["2g", "slow-2g", "3g"] },
});

// Later, e.g., to adjust image quality:
if (isConstrainedNetwork()) loadLowResImages();

// On teardown:
stop();
```
- Defined in src/env/network.ts:100