The AI moved his app to a new web framework: 229 commits in 15 days

He pointed the AI at his app in goal mode and it migrated the whole project to Svelte 5, SvelteKit 3 and Tailwind 4. The run took 15 days, 229 commits and 3,523 file changes. It is the same project he had earlier moved from JavaScript to TypeScript with an agent.

How it works

He sets the migration goal
The AI converts the codebase over 15 days
229 commits and 3,523 file changes land

Why it’s worth knowing

One persistent agent run converted a whole production app to new framework versions, 3,523 file changes, without the owner writing the code.

Where it’s from

Summarized from a public post on njump.me. See the original ↗

Upgraded prompt

A ready-to-use prompt for this idea, built from research on what makes AI agents do the job right: who the AI should be, the exact steps, and a check to make sure it was done the way you wanted.

1Who the AI should be

2The prompt, with the steps

3The check when it’s done

Upgraded prompts are coming soon.

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Every idea is a real post from someone who tried it, summarized in our words, with a link to the original. App names are swapped for plain words.