fetchTile coalesced concurrent requests for one tile onto a single
upstream fetch, but that fetch ran on the first caller's signal. When the
first request was abandoned (an older pan), every joined request lost a
tile it still needed; and a joined caller that aborted stayed subscribed
until the shared fetch finished.
A flight now owns its AbortController and counts waiters, the pattern the
weather and wind providers use. Each caller's own abort rejects that caller
at once; the upstream fetch is cancelled only when the last waiter leaves,
and a later request after that starts a fresh fetch.
Regression tests (fail on the previous tiles.js, pass now): a joined
request survives the first caller aborting with one upstream request; a
joined caller that aborts leaves at once while the first still gets the
tile; both waiters leaving cancels the owned fetch.
Reported by kvnloo in review.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Street Level is imagery only from here on: coverage, sequences and the
embedded viewer. The Claude planner, map-feature and traffic-sign tiles,
the NDJSON feature stream, sprites, detection outlines and analyst records
go, along with @anthropic-ai/sdk, zod and the Anthropic key entry.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
Vite middleware for /api/mapillary: status (capabilities, never values),
vector tiles cached in memory and on disk with the 12 MB z14 image layer
stripped in transit, an NDJSON feature stream capped at 600 tiles, MIT
sprite icons behind a grammar-guarded path, and a structured-output planner
that only activates when ANTHROPIC_API_KEY is set server-side.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
Camera-driven Mapillary coverage (z0–5 overview points from orbit, z11–14
ground-clamped sequence lines below 60 km), per-sequence image cones, an
embedded MapillaryJS viewer bridge with a camera-follow mode, sprite icons
for map features, and a query engine that turns a plan into a streamed
z14 tile fan-out. Registers an on-globe CC BY-SA 4.0 credit while enabled.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
