No Monaco Wrapper: A Brand-New Code Editor Engine Built from Scratch

aidenybai · x · 2026-08-04

The team has launched a new editing experience on diffs.com. Instead of wrapping existing solutions like Monaco or ProseMirror, this is an entirely new edit implementation built from scratch.

Technically, the team drew inspiration from Monaco/CodeMirror, utilizing a piece table algorithm for the text buffer and supporting background tokenization in slices. The project comprises over 189 commits and over 900 new tests, while retaining standard editor keybindings.

Related event: Diffs.com Launches Custom-Built Editor Engine(2 posts)→

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