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Context

This is a mini POC (Proof of Concept) created as part of the Web Platform Technical Strategy work led by Matthew O'Riordan.

DO NOT REVIEW - This branch is for internal validation only and is not meant to be merged as-is.

RFC Reference: WEBRFC-005: Web Platform Technical Strategy

Purpose

Validates RFC hypothesis: "Sandpack works correctly with Next.js 15 App Router without SSR errors."

Results

  • Verdict: VALIDATED
  • SSR Build: Passes without errors
  • Hydration: No warnings in browser console
  • Code Editor: Renders and is editable
  • Preview Panel: Shows live output
  • Bundle Size: 216 kB for Sandpack page

Key Finding

No workarounds required - standard 'use client' directive is sufficient. GitHub issue #1093 appears resolved in Sandpack 2.20.0.

See poc-nextjs/ for implementation and POC_RESULTS.md for findings.


🤖 Generated as part of autonomous POC execution

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coderabbitai bot commented Jan 15, 2026

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Validates RFC hypothesis: Sandpack works with Next.js 15 App Router
without SSR errors or hydration mismatches.

Results:
- SSR Build: Passes without errors ✅
- Hydration: No warnings in browser console ✅
- Code Editor: Renders and is editable ✅
- Preview Panel: Shows live output ✅
- Standard "use client" directive is sufficient

See poc-nextjs/POC_RESULTS.md for detailed findings.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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