OpenBB - Open Source Contribution

Contributed to OpenBB, an open-source financial data platform. Fixed a cross-browser compatibility bug that caused the application to crash in certain browsers due to unsupported API calls and inconsistent DOM handling.

JavaScript · React · Browser APIs

OpenBB Platform

01 Product overview

What the product does

OpenBB is an open-source investment research platform that provides access to financial data, analysis tools, and market insights. The platform experienced crashes in certain browsers due to cross-browser compatibility issues in the frontend codebase.

02 Problem and context

What it needed to solve

The OpenBB web application was crashing in some browsers, including Microsoft Edge (Bing-integrated). The issue stemmed from the use of browser APIs that were not universally supported and inconsistent DOM event handling across rendering engines. This created a poor user experience for a significant portion of the user base who did not use Chrome as their primary browser.

03 My contribution

What I worked on

Diagnosed the cross-browser crash by analyzing the error stack traces and identifying unsupported API calls
Implemented feature detection and polyfills for the affected browser APIs
Added fallback handling for DOM events that behaved differently across rendering engines
Submitted a pull request with the fix and supporting documentation

05 Engineering and outcomes

Implementation details

Verified results

Cross-Browser FixResolved crashes affecting Edge and other non-Chrome browsers by implementing proper feature detection and API fallbacks.
User ImpactRestored access for users on affected browsers, expanding the platform's effective reach.

Lessons

Cross-browser compatibility issues are almost always about assumptions. The fix is rarely the hard part. Finding which assumption broke is.
Open-source contribution teaches you to read unfamiliar codebases fast and communicate intent clearly in PRs.