The IR's canonical tree came from one viewport, so DOM that exists only at other widths (mobile-only pagination bullets, per-viewport product sets) either vanished or left empty display:none shells. - Unmatched children at non-canonical viewports graft into the IR at deterministic anchored positions with per-viewport data scoped to their source widths; emission gives them a base hide plus a reveal band (hidden max-[...]:block), capped per parent, invisible subtrees skipped - Whole-set identity drift (a container serving disjoint same-family child sets per viewport) is detected by mutual mismatch; canonical content stands in at the drift viewport instead of an empty shell, and manifest.json records the divergence - Per-item divergence resolves naturally via grafting: each viewport shows exactly its captured content, mutually exclusive by banding 468 tests pass (8 new), typecheck clean, double-build byte-identical. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
ditto.site Compiler
This workspace contains the deterministic compiler used by ditto.site. It captures a source URL, builds a render IR, infers assets/fonts/tokens/sections/recipes/SEO, generates a Next.js App Router app by default or a Vite React app on request, and validates the result with deterministic gates.
The full architecture overview lives in ../README.md. This file keeps only compiler-local commands and notes.
Commands
cd compiler
npm install
npx playwright install chromium
npm run clone -- https://example.com/
npm run clone -- https://example.com/ --serve # then npm install + npm run dev
npm run clone -- https://example.com/ --open # ...and open the browser too
npm run clone -- https://example.com/ --mode=multi --styling=tailwind
npm run clone -- https://example.com/ --mode=single --framework=vite
npm run clone-site -- https://example.com/
npm run validate-site -- ../runs/site-example.com/<timestamp>
npm run clone -- https://example.com/ --mode=multi --concurrency=5
npm run clone -- https://example.com/ --mode=multi --validate --validate-concurrency=3 --viewport-concurrency=2
npm run validate-site -- ../runs/site-example.com/<timestamp> --validate-concurrency=3 --viewport-concurrency=2
npm run bench -- --tier=easy
npm run bench-site
npm run quality -- ../runs/example.com/<timestamp>
npm run audit -- ../runs/example.com/<timestamp>
npm test
npm run typecheck
Root-level scripts forward to these commands, so npm run clone -- <url> works
from the repository root too.
("Clone" here = generating a codebase from a live URL, not git clone; no source
repo required.) On success the CLI prints a copy-paste-safe summary: a single
quoted cd … && npm install && npm run dev line plus safe-to-edit pointers. Pass
--serve to run install + dev automatically, or --open to also launch the
browser. Without --out, a runs/<site>/latest symlink always points at the
newest run so paths aren't timestamp-fragile.
Multi-page generation defaults to the fast no-validation path. Use --validate
when the clone command itself should run the full build/render/gates QA pass, or
run validate-site separately. --concurrency controls source route capture;
--validate-concurrency controls how many routes validation grades at once; and
--viewport-concurrency controls how many clone viewports each route renders at
once.
Generated App Shape
Default Next generated apps use src/app/ditto.css and optional helpers under
src/app/ditto/. Vite generated apps use src/ditto.css and optional helpers
under src/ditto/, with multi-route pages under src/routes/. Validation builds
keep data-cid attributes for source/clone alignment; delivered apps strip those
validation ids and keep only required data-ditto-id anchors.