Reactotron Core Contract

Reactotron Core Contract (reactotron-core-contract) is a TypeScript-first package that defines the canonical interfaces and types for the WebSocket messages exchanged between the Reactotron desktop application (the server) and various client-side libraries (like reactotron-react-native or reactotron-react-js). Introduced with Reactotron 3.0, its primary purpose is to ensure strong type safety and compatibility across the entire Reactotron ecosystem, both for internal package consistency and for external plugin development. It formalizes the communication protocol, making it easier to build robust custom plugins and maintain reliable connections. The package is part of the larger Reactotron monorepo, currently at version 0.3.2, and its release cadence is tied to the evolution of the main Reactotron project, typically released when changes accumulate or align with other Reactotron component updates.