Files
pbakaus_impeccable/skill/scripts/live/frameworks/sveltekit.mjs
T
Paul BakausandClaude Code 17dabf4b7e Live v2: root manifest, mount-ack protocol, AST scaffolder, mechanical accept
A ground-up hardening of live mode, driven by a production session in a
nested-app monorepo that hit six distinct failure classes. Full design
rationale in docs/LIVE-REWRITE-PLAN.md; every Codex-reported failure now
has a mechanical fix and a regression test.

Roots: live/roots.mjs resolves appRoot/repoRoot/contextRoot once at boot
(keyed on dev-server configs, not monorepo brand markers), persists a
manifest, and every live CLI re-anchors onto it at startup, so a helper
run from the wrong directory can no longer fork session state. Context
files are discovered upward to the git root.

Render truth: variant_mounted / variant_mount_failed events give the
journal per-variant mount state; failures reach the agent's poll queue,
raise a persistent error card with Retry (no more localStorage wipe), and
an attach probe names root/dev-server mismatches explicitly. The browser
rehydrates from the server when localStorage is gone.

Svelte: the scaffolder now parses with the app's own svelte 5 compiler.
Control flow survives (an each collection crosses the contract as one
structured prop), keyed each blocks hydrate synthetic keys, and anything
a detached preview cannot support falls back to source-preview instead of
shipping a wrong scaffold. Preview modules live in per-publish revision
directories, defeating stale transform caches.

Accept: CSS is reconciled, not appended. Matching selectors are replaced,
params bake from params.json kinds, the compiler's unused-selector pass
prunes superseded rules (pre-existing dead rules protected), a selector-
loss postcondition refuses any write that would drop hand-written rules,
and live-complete refuses to finish while live plumbing remains in source.

Also: framework registry (live/frameworks/) with a crash-safe injection
journal, session-store snapshot caching with read-only reads, protocol
enum consolidation, steer Send button, honest DESIGN-panel empty states.

Testing: new unit suites (roots, AST scaffolder, accept CSS, accept
pipeline, framework conformance); e2e now fails on preview-tree 404s,
proves computed-style mount for every variant, drives the Tune panel
through baked params, and injects failures (broken mounts, republish,
storage loss). New runtime fixtures: monorepo-nested-vite (repo root !=
app root) and vite8-sveltekit-stateful (each blocks + state). Nightly
full-matrix cron. An independent adversarial review pass preceded this
commit; its blocker and major findings are fixed and regression-tested.

This work was produced with AI assistance (Claude Code).

Co-Authored-By: Claude Code <noreply@anthropic.com>
2026-07-27 15:09:40 -07:00

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JavaScript

/**
* SvelteKit registry entry.
*
* Detection and the apply/remove pair are the existing adapter's
* (`../sveltekit-adapter.mjs`); this file only declares them to the registry
* and names the artifacts the journal has to be able to heal.
*/
import {
SVELTE_LAYOUT_MARKER_OPEN,
SVELTE_LIVE_ROOT_COMPONENT,
applySvelteKitLiveAdapter,
detectSvelteKitProject,
removeSvelteKitLiveAdapter,
unpatchSvelteLayout,
} from '../sveltekit-adapter.mjs';
export const sveltekit = {
name: 'sveltekit',
detect(cwd, config) {
return detectSvelteKitProject(cwd, config);
},
inject: {
kind: 'adapter',
apply({ cwd, port, token, config }) {
return applySvelteKitLiveAdapter({ cwd, port, token, config });
},
remove({ cwd, config }) {
return removeSvelteKitLiveAdapter({ cwd, config });
},
// The generated root component and the `src/lib/impeccable/` runtime paths
// are already in the static LIVE_IGNORE_PATTERNS list, so nothing extra.
ignorePatterns() {
return [];
},
artifacts({ project }) {
return [
{
kind: 'created',
path: SVELTE_LIVE_ROOT_COMPONENT,
marker: 'impeccable-live-root',
pruneTo: 'src',
},
{
kind: 'patched',
path: project?.layoutFile || 'src/routes/+layout.svelte',
patch: 'sveltekit-layout',
markers: [SVELTE_LAYOUT_MARKER_OPEN],
},
];
},
unpatch: {
'sveltekit-layout': unpatchSvelteLayout,
},
},
source: {
extensions: ['.svelte'],
// Svelte resets component-local state on markup HMR updates, so variants
// are mounted from generated components rather than written into the route.
preview: 'component',
commentSyntax: 'html',
},
};