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Bun implements V8’s heap snapshot API, which allows you to create snapshots of the heap at runtime. This helps debug memory leaks in your JavaScript/TypeScript application.
https://mintcdn.com/bun-1dd33a4e/Hq64iapoQXHbYMEN/icons/typescript.svg?fit=max&auto=format&n=Hq64iapoQXHbYMEN&q=85&s=c6cceedec8f82d2cc803d7c6ec82b240snapshot.ts
import v8 from 'node:v8';

// Creates a heap snapshot file with an auto-generated name
const snapshotPath = v8.writeHeapSnapshot();
console.log(`Heap snapshot written to: ${snapshotPath}`);

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Inspect memory in Chrome DevTools

To view V8 heap snapshots in Chrome DevTools:
  1. Open Chrome DevTools (F12 or right-click and select “Inspect”)
  2. Go to the “Memory” tab
  3. Click the “Load” button (folder icon)
  4. Select your .heapsnapshot file