debugger.sh

An in-browser C IDE for debugger-sh. Editor, breakpoints, step debugging, interactive terminal, call stack, and variable inspector — all client-side.

Lives at https://debugger.sh

Run locally

npm install
npm run dev

Then open http://localhost:3000.

The Next dev server sets COOP/COEP headers (see next.config.ts) so SharedArrayBuffer works for the wasm runtime.

Layout

app/page.tsx              wires components + useExecution
hooks/useExecution.ts     runtime + DAP lifecycle
components/
  CodeEditor.tsx          CodeMirror + breakpoint gutter + stopped-line highlight
  Terminal.tsx            xterm.js (stdin + stdout)
  VariablesPanel.tsx      call stack + variables
  SourceActions.tsx       run / stop / step toolbar
  ResizableWorkspace.tsx  draggable VS Code-style dock

Bumping the runtime

npm i debugger-sh@latest

Deploy

Static Next export (output: 'export') served by a Cloudflare Worker. Pushing to main runs npm run build then npx wrangler deploy (~30s). public/_headers carries COOP/COEP in production since the Next headers() config is dropped during static export.