I failed a "design a document editor" interview, so I built one
How I built a drag-and-drop resume editor Roleframe exists because of an interview I failed. After a long job hunt I finally landed a system design interview, and the question was one I had never worked on: design a document editor. I did my best, there was no offer, and the problem would not leave me alone. So I learned it properly. How editors record every change. How layout engines decide…
The author, after failing a design interview for a document editor, built such an editor themselves. The Roleframe resume builder emerged from an understanding of how editors record changes, how layout engines determine placement, and how professional tools are constructed. The editor's core components include drag-and-drop functionality, layout control, and PDF output generation.
The editor's architecture utilizes TypeScript, React, and a custom event sourcing engine, focusing on a document state represented as a map rather than an array. This approach allows for efficient rendering and editing, with the document's history stored as a series of discrete events. The editor's event-driven model enables features like undo functionality, efficient synchronization, and offline resilience.
The author also explores the potential for AI-powered document generation and collaboration, all built upon the same foundation of typed events and event sourcing.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
