Mixpanel Browser SDK

The `mixpanel-browser` library is the official JavaScript browser client for Mixpanel, enabling web applications to send analytics data, capture user events, perform session replay, manage feature flags, and track network telemetry. Currently at version 2.78.0, the library receives frequent updates, typically on a weekly or bi-weekly cadence, reflecting active development and the introduction of new features such as enhanced session recording capabilities (cross-origin iframe support, network recording, event-triggered recording), a refined masking API for sensitive data, and advanced autocapture options. Key differentiators include its comprehensive feature set for client-side analytics, robust session replay with masking and console recording, and a flexible module loading system allowing for optimized bundle sizes by excluding session recording components when not needed. It provides first-party TypeScript types and supports modern ESM import patterns.