Building a Sentry: 7 years of open-source React

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Join Sentry’s Evan Purkhiser and David Wang as they walk through Sentry’s 230k LoC Typescript/React codebase. They’ll tell war stories of the good, the bad, and the ugly. Gaze in wonder at their modern usage of Typescript, react hooks, and styled components. Recoil in disgust at their legacy Reflux usage and perplexing Webpack configuration. Step away from the workshop with a working knowledge of techniques to keep a large-scale frontend codebase modern and maintainable.

This workshop has been presented at React Advanced 2021, check out the latest edition of this React Conference.

FAQ

The Core UI Team at Sentry fills in gaps within specialized teams, handling important tasks that often get overlooked as organizations grow and teams become more specific in their functions. They ensure the product not only works well but also provides a great user experience.

Sentry is a tool that helps developers monitor applications by capturing errors and performance issues. It provides a dashboard where errors are displayed, supports setups for alerts based on performance metrics, and helps in diagnosing issues with features like stack trace and breadcrumbs for better error resolution.

Sentry automates error reporting by capturing errors and displaying them on a dashboard, which helps developers manage large volumes of issues efficiently without manual intervention. This system is scalable and aids in maintaining smooth operations even as the user base grows.

Key features of Sentry's error monitoring service include error tracking with detailed context like browser version and OS, performance monitoring with Web Vital data, and proactive alert setups for issues and performance regressions. It also includes a sandbox feature for testing.

Despite having a small core UI team, Sentry manages its development effectively by specializing roles within the team and focusing on filling cracks within the development process. The team prioritizes important background tasks that enhance the overall product quality and user experience.

Sentry uses a variety of modern tools like TypeScript for safe refactoring and error reduction, React for UI development, and Emotion for CSS-in-JS solutions. They also utilize webpack and Babel for building and compiling their applications.

Evan Purkhiser
Evan Purkhiser
David Wang
David Wang
69 min
18 Oct, 2021

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Video Summary and Transcription
Sentry is a valuable tool for handling errors and optimizing performance in applications. The Core UI Team at Sentry ensures a high-quality product and fills in any gaps. The workshop covered topics such as the tech stack, front-end compilation, styling with Emotion and React Router, state management with Reflux, the benefits of TypeScript, performance optimization, code reviews, and measuring page load. The workshop concluded with the recommendation to join the Sentry Discord for further discussion and exploration of the open-source code.
Video transcription and chapters available for users with access.

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