992: Migrating Legacy Code Just Got Easier

992: Migrating Legacy Code Just Got Easier

From Syntax - Tasty Web Development Treats by Wes Bos & Scott Tolinski - Full Stack JavaScript Web Developers

April 1, 2026 · 29 min

About this episode

Wes and Scott discuss strategies for migrating large codebases using AI, including planning, testing, and deployment.

Wes and Scott talk about migrating large codebases with AI — how to plan framework and language moves, establish patterns, handle templating changes, test thoroughly, safely deploy, and more. Show Notes 00:00 Welcome to Syntax! 01:46 Why migrate to a new language or framework? 05:09 How to approach a large code migration 08:47 Establishing patterns before using AI 10:35 Moving from pug to JSX 12:06 Building a detailed migration plan 15:18 Testing every part of the application 15:51 Brought to you by Sentry.io 16:58 Deploying and catching issues with Sentry 19:12 Converting express requests to web standard requests 19:34 Other codebases that could benefit from AI migrations 21:36 Sick Picks + Shameless Plugs Sick Picks Scott: WisprFlow Wes: displayplacer Shameless Plugs Phases Podcast Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

People in this episode

Hosts: Wes Bos, Scott Tolinski

Topics covered

  • code migration
  • AI in development
  • framework changes
  • testing
  • deployment strategies

Keywords

  • legacy code
  • AI migration
  • framework migration
  • templating changes
  • application testing

Sponsors

Sentry.io

Mentioned in this episode

Organizations: Phases Podcast

Products: WisprFlow, displayplacer

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