"Design a collaborative document editor like Google Docs."
Analyzing the Problem
Google Docs and collaborative code editors like CoderPad are real-time collaborative document editors: several people type into one document, each sees the character appear instantly online or off, edits merge live so both sides converge to the same text, and offline edits reconcile on reconnect. The app also shows active collaborators' cursors and selections, and undo/redo is per-user. Comments, suggestions, version history, tables, images, and embeds are out of scope.
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