Injected-bundler read (window opened 2026-08-25, R3-278) — the boot
seed degrades to transport event-fill when this returns null.
The injected bundler's synchronous metadata snapshot for the boot seed
(MDX_CONTENT_COLLECTIONS_SPEC §1.4). Returns the full /app-keyed collection the
bundler seeded (from the frontmatter sidecar) so the app's first render already
holds it — the SDK-side counterpart of the bundler seeding. Null when npm-fetched
(no in-realm bundler) → the SDK degrades to event-fill over the §4 transport, no
first-paint guarantee. The returned VALUE refs are the same objects the emitter
replays, so the enable() replay is a no-op (the §1.4 identity contract).
Deprecated
Injected-bundler read (window opened 2026-08-25, R3-278) — the boot seed degrades to transport event-fill when this returns null.
The injected bundler's synchronous metadata snapshot for the boot seed (MDX_CONTENT_COLLECTIONS_SPEC §1.4). Returns the full
/app-keyed collection the bundler seeded (from the frontmatter sidecar) so the app's first render already holds it — the SDK-side counterpart of the bundler seeding. Null when npm-fetched (no in-realm bundler) → the SDK degrades to event-fill over the §4 transport, no first-paint guarantee. The returned VALUE refs are the same objects the emitter replays, so theenable()replay is a no-op (the §1.4 identity contract).