style: format terrain traffic fire and bike-share modules

scripts/format-scope.json

@@ -57,5 +57,17 @@
   "server/providers/space/celestrak.js",
   "server/providers/space/launch-library.js",
   "src/data/spaceProviderRequests.js",
-  "src/tooling/spaceProviders.test.mjs"
+  "src/tooling/spaceProviders.test.mjs",
+  "server/providers/terrain.js",
+  "server/providers/traffic.js",
+  "server/providers/firms.js",
+  "server/providers/gbfs.js",
+  "src/data/gbfsSource.js",
+  "src/data/terrainHeightsProxy.js",
+  "src/data/terrainHeightsProxy.test.mjs",
+  "src/data/tomtomTiles.js",
+  "src/data/tomtomTiles.test.mjs",
+  "src/data/firmsCsv.js",
+  "src/data/firmsCsv.test.mjs",
+  "src/tooling/environmentProviders.test.mjs"
 ]

server/providers/firms.js

@@ -49,10 +49,16 @@ export function firmsProxy() {
     diskChecked = true;
     try {
       const parsed = JSON.parse(await fsp.readFile(CACHE_PATH, 'utf8'));
-      if (Number.isFinite(parsed?.at) && Array.isArray(parsed?.sources) && Array.isArray(parsed?.fires)) {
+      if (
+        Number.isFinite(parsed?.at) &&
+        Array.isArray(parsed?.sources) &&
+        Array.isArray(parsed?.fires)
+      ) {
         mem = parsed;
       }
-    } catch { /* no disk cache yet */ }
+    } catch {
+      /* no disk cache yet */
+    }
   }
 
   async function writeDisk(entry) {
@@ -97,7 +103,10 @@ export function firmsProxy() {
         for (const record of records) fires.push(record);
         sources.push({ source, count: records.length, ok: true });
       } catch (err) {
-        console.warn(`[firms-proxy] ${source} fetch failed:`, err?.message || err);
+        console.warn(
+          `[firms-proxy] ${source} fetch failed:`,
+          err?.message || err,
+        );
         sources.push({ source, count: 0, ok: false });
       }
     }
@@ -136,9 +145,14 @@ export function firmsProxy() {
           const body = await res.json();
           const used = Number(body?.current_transactions);
           const limit = Number(body?.transaction_limit);
-          return Number.isFinite(used) && Number.isFinite(limit) ? { used, limit } : null;
+          return Number.isFinite(used) && Number.isFinite(limit)
+            ? { used, limit }
+            : null;
         } catch (err) {
-          console.warn('[firms-proxy] mapkey status failed:', err?.message || err);
+          console.warn(
+            '[firms-proxy] mapkey status failed:',
+            err?.message || err,
+          );
           return null;
         }
       })()
@@ -146,7 +160,9 @@ export function firmsProxy() {
           statusCache = { at: Date.now(), transactions };
           return transactions;
         })
-        .finally(() => { statusInflight = null; });
+        .finally(() => {
+          statusInflight = null;
+        });
     }
     return statusInflight;
   }
@@ -157,7 +173,10 @@ export function firmsProxy() {
       server.middlewares.use('/api/firms', async (req, res) => {
         const sendJson = (status, obj) => {
           if (res.headersSent) return;
-          res.writeHead(status, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+          res.writeHead(status, {
+            'Content-Type': 'application/json',
+            'Cache-Control': 'no-store',
+          });
           res.end(JSON.stringify(obj));
         };
         try {
@@ -167,7 +186,14 @@ export function firmsProxy() {
 
           if (subPath === '/status') {
             if (!key) {
-              sendJson(200, { hasKey: false, lastFetch: null, count: null, stale: false, ttlMs: TTL_MS, transactions: null });
+              sendJson(200, {
+                hasKey: false,
+                lastFetch: null,
+                count: null,
+                stale: false,
+                ttlMs: TTL_MS,
+                transactions: null,
+              });
               return;
             }
             const transactions = await getTransactions(key);
@@ -203,10 +229,14 @@ export function firmsProxy() {
                 return fresh;
               })
               .catch((err) => {
-                console.warn(`[firms-proxy] refresh failed (${err?.message || err}) — serving cache if any`);
+                console.warn(
+                  `[firms-proxy] refresh failed (${err?.message || err}) — serving cache if any`,
+                );
                 return null;
               })
-              .finally(() => { inflight = null; });
+              .finally(() => {
+                inflight = null;
+              });
           }
           const pending = inflight;
           const fresh = await pending;
@@ -215,7 +245,9 @@ export function firmsProxy() {
           } else if (entry) {
             sendJson(200, buildPayload(entry, true)); // upstream down — stale beats empty
           } else {
-            sendJson(502, { error: 'firms fetch failed and no cache available' });
+            sendJson(502, {
+              error: 'firms fetch failed and no cache available',
+            });
           }
         } catch (err) {
           console.warn('[firms-proxy] error:', err?.message || err);

server/providers/gbfs.js

@@ -1,4 +1,8 @@
-import { isAllowedGbfsHost, isAllowedGbfsPath, gbfsCacheControl } from '../../src/data/gbfsSource.js';
+import {
+  isAllowedGbfsHost,
+  isAllowedGbfsPath,
+  gbfsCacheControl,
+} from '../../src/data/gbfsSource.js';
 
 // ---------------------------------------------------------------------------
 // GBFS (General Bikeshare Feed Specification) proxy constants
@@ -23,7 +27,10 @@ export function gbfsProxy() {
       server.middlewares.use('/api/gbfs', async (req, res) => {
         try {
           if (req.method !== 'GET') {
-            res.writeHead(405, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(405, {
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
             res.end(JSON.stringify({ error: 'Method Not Allowed' }));
             return;
           }
@@ -31,7 +38,10 @@ export function gbfsProxy() {
           const url = new URL(req.url || '/', 'http://localhost');
           const encodedTarget = url.pathname.replace(/^\/+/, '');
           if (!encodedTarget) {
-            res.writeHead(400, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(400, {
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
             res.end(JSON.stringify({ error: 'Missing GBFS upstream target' }));
             return;
           }
@@ -40,7 +50,10 @@ export function gbfsProxy() {
           try {
             decodedTarget = decodeURIComponent(encodedTarget);
           } catch {
-            res.writeHead(400, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(400, {
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
             res.end(JSON.stringify({ error: 'Invalid GBFS target encoding' }));
             return;
           }
@@ -49,31 +62,53 @@ export function gbfsProxy() {
           try {
             upstreamUrl = new URL(decodedTarget);
           } catch {
-            res.writeHead(400, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(400, {
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
             res.end(JSON.stringify({ error: 'Invalid GBFS upstream URL' }));
             return;
           }
 
           if (upstreamUrl.protocol !== 'https:') {
-            res.writeHead(400, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(400, {
-            res.end(JSON.stringify({ error: 'Only https GBFS targets are allowed' }));
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
+            res.end(
+              JSON.stringify({ error: 'Only https GBFS targets are allowed' }),
+            );
             return;
           }
 
           if (!isAllowedGbfsHost(upstreamUrl.hostname)) {
-            res.writeHead(403, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(403, {
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
             res.end(JSON.stringify({ error: 'GBFS host not allowed' }));
             return;
           }
 
           if (!isAllowedGbfsPath(upstreamUrl.pathname)) {
-            res.writeHead(400, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(400, {
-            res.end(JSON.stringify({ error: 'Only station_information/station_status endpoints are allowed' }));
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
+            res.end(
+              JSON.stringify({
+                error:
+                  'Only station_information/station_status endpoints are allowed',
+              }),
+            );
             return;
           }
 
           const controller = new AbortController();
-          const timeoutId = setTimeout(() => controller.abort(), GBFS_PROXY_TIMEOUT_MS);
+          const timeoutId = setTimeout(
+            () => controller.abort(),
+            GBFS_PROXY_TIMEOUT_MS,
+          );
           let upstream;
           try {
             upstream = await fetch(upstreamUrl.toString(), {
@@ -91,18 +126,32 @@ export function gbfsProxy() {
           // Limit response size to prevent memory exhaustion from malicious upstream
           const GBFS_MAX_BODY_BYTES = 5 * 1024 * 1024; // 5 MB
           const contentLength = Number(upstream.headers.get('content-length'));
-          if (Number.isFinite(contentLength) && contentLength > GBFS_MAX_BODY_BYTES) {
+          if (
-            res.writeHead(502, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            Number.isFinite(contentLength) &&
-            res.end(JSON.stringify({ error: 'GBFS upstream response too large' }));
+            contentLength > GBFS_MAX_BODY_BYTES
+          ) {
+            res.writeHead(502, {
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
+            res.end(
+              JSON.stringify({ error: 'GBFS upstream response too large' }),
+            );
             return;
           }
           const body = await upstream.text();
           if (Buffer.byteLength(body, 'utf8') > GBFS_MAX_BODY_BYTES) {
-            res.writeHead(502, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(502, {
-            res.end(JSON.stringify({ error: 'GBFS upstream response too large' }));
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
+            res.end(
+              JSON.stringify({ error: 'GBFS upstream response too large' }),
+            );
             return;
           }
-          const contentType = upstream.headers.get('content-type') || 'application/json';
+          const contentType =
+            upstream.headers.get('content-type') || 'application/json';
           res.writeHead(upstream.status, {
             'Content-Type': contentType,
             'Cache-Control': gbfsCacheControl(upstreamUrl.pathname),
@@ -112,12 +161,18 @@ export function gbfsProxy() {
           res.end(body);
         } catch (error) {
           if (error?.name === 'AbortError') {
-            res.writeHead(504, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+            res.writeHead(504, {
+              'Content-Type': 'application/json',
+              'Cache-Control': 'no-store',
+            });
             res.end(JSON.stringify({ error: 'GBFS upstream timeout' }));
             return;
           }
           console.error('[GBFS Proxy]', error?.message || String(error));
-          res.writeHead(502, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
+          res.writeHead(502, {
+            'Content-Type': 'application/json',
+            'Cache-Control': 'no-store',
+          });
           res.end(JSON.stringify({ error: 'GBFS proxy error' }));
         }
       });

server/providers/terrain.js

@@ -39,12 +39,19 @@ export function terrainHeightsProxy() {
     diskLoaded = true;
     try {
       const parsed = JSON.parse(await fsp.readFile(CACHE_PATH, 'utf8'));
-      const pointEntries = parsed?.version === 2 && parsed.points && typeof parsed.points === 'object'
+      const pointEntries =
-        ? parsed.points
+        parsed?.version === 2 &&
-        : null;
+        parsed.points &&
+        typeof parsed.points === 'object'
+          ? parsed.points
+          : null;
       if (pointEntries) {
         for (const [key, entry] of Object.entries(pointEntries)) {
-          if (entry && Number.isFinite(entry.at) && validTerrainResult(entry.result)) {
+          if (
+            entry &&
+            Number.isFinite(entry.at) &&
+            validTerrainResult(entry.result)
+          ) {
             mem.set(key, entry);
           }
         }
@@ -53,18 +60,27 @@ export function terrainHeightsProxy() {
         // positionally present results; an absent value never becomes height 0.
         for (const [rawPoints, entry] of Object.entries(parsed)) {
           const points = parseTerrainPoints(rawPoints);
-          if (!points || !entry || !Number.isFinite(entry.at) || !Array.isArray(entry.results)) continue;
+          if (
+            !points ||
+            !entry ||
+            !Number.isFinite(entry.at) ||
+            !Array.isArray(entry.results)
+          )
+            continue;
           for (let i = 0; i < points.length; i += 1) {
             const result = entry.results[i];
             if (!validTerrainResult(result)) continue;
             const key = terrainPointKey(points[i]);
             const existing = mem.get(key);
-            if (!existing || entry.at > existing.at) mem.set(key, { at: entry.at, result });
+            if (!existing || entry.at > existing.at)
+              mem.set(key, { at: entry.at, result });
           }
         }
         diskDirty = mem.size > 0;
       }
-    } catch { /* no disk cache yet */ }
+    } catch {
+      /* no disk cache yet */
+    }
     // Periodic flush, same shape as adsbdbProxy: coalesce writes instead of
     // hitting disk on every request.
     setInterval(async () => {
@@ -97,7 +113,8 @@ export function terrainHeightsProxy() {
       const chunkResults = await fetchTerrainChunkWithRetry(chunk);
       // Keep later chunks aligned even if a malformed upstream response omits
       // trailing positions. The resolver will reject each null individually.
-      for (let j = 0; j < chunk.length; j += 1) results.push(chunkResults[j] ?? null);
+      for (let j = 0; j < chunk.length; j += 1)
+        results.push(chunkResults[j] ?? null);
     }
     return results;
   }
@@ -106,10 +123,9 @@ export function terrainHeightsProxy() {
   function fetchMissingSingleFlight(points) {
     const key = points.map(terrainPointKey).join(';');
     if (!inflight.has(key)) {
-      const request = fetchUpstreamAll(points)
+      const request = fetchUpstreamAll(points).finally(() => {
-        .finally(() => {
+        if (inflight.get(key) === request) inflight.delete(key);
-          if (inflight.get(key) === request) inflight.delete(key);
+      });
-        });
       inflight.set(key, request);
     }
     return inflight.get(key);
@@ -130,11 +146,16 @@ export function terrainHeightsProxy() {
           const rawPoints = parsedUrl.searchParams.get('points');
           const points = parseTerrainPoints(rawPoints);
           if (!points) {
-            send(400, { error: 'invalid points parameter — expected "lon,lat;lon,lat;…" with finite numbers' });
+            send(400, {
+              error:
+                'invalid points parameter — expected "lon,lat;lon,lat;…" with finite numbers',
+            });
             return;
           }
           if (points.length > MAX_POINTS) {
-            send(500, { error: `too many points (${points.length}); max ${MAX_POINTS} per request` });
+            send(500, {
+              error: `too many points (${points.length}); max ${MAX_POINTS} per request`,
+            });
             return;
           }
 
@@ -147,8 +168,8 @@ export function terrainHeightsProxy() {
           if (outcome.cacheChanged) diskDirty = true;
           if (outcome.upstreamError) {
             console.warn(
-              '[terrain-heights-proxy] refresh incomplete'
+              '[terrain-heights-proxy] refresh incomplete' +
-              + ' — serving stale points when available'
+                ' — serving stale points when available',
             );
           }
           send(outcome.status, outcome.body);

server/providers/traffic.js

@@ -60,10 +60,16 @@ export function tomtomProxy() {
     budgetLoaded = true;
     try {
       const parsed = JSON.parse(await fsp.readFile(BUDGET_PATH, 'utf8'));
-      if (parsed && typeof parsed.date === 'string' && Number.isFinite(parsed.count)) {
+      if (
+        parsed &&
+        typeof parsed.date === 'string' &&
+        Number.isFinite(parsed.count)
+      ) {
         budget = parsed;
       }
-    } catch { /* no budget file yet */ }
+    } catch {
+      /* no budget file yet */
+    }
   }
 
   async function persistBudget() {
@@ -87,7 +93,8 @@ export function tomtomProxy() {
     void persistBudget();
   }
 
-  const tilePath = (key) => path.join(CACHE_DIR, `flow-${key.replaceAll('/', '-')}.pbf`);
+  const tilePath = (key) =>
+    path.join(CACHE_DIR, `flow-${key.replaceAll('/', '-')}.pbf`);
 
   /** Disk-cache read; tile age comes from the file's mtime. */
   async function readDiskTile(key) {
@@ -97,7 +104,9 @@ export function tomtomProxy() {
         fsp.readFile(tilePath(key)),
       ]);
       return { at: stat.mtimeMs, buf };
-    } catch { return null; }
+    } catch {
+      return null;
+    }
   }
 
   async function writeDiskTile(key, buf) {
@@ -105,7 +114,10 @@ export function tomtomProxy() {
       await fsp.mkdir(CACHE_DIR, { recursive: true });
       await fsp.writeFile(tilePath(key), buf);
     } catch (err) {
-      console.warn(`[tomtom-proxy] tile cache write failed for ${key}:`, err?.message || err);
+      console.warn(
+        `[tomtom-proxy] tile cache write failed for ${key}:`,
+        err?.message || err,
+      );
     }
   }
 
@@ -119,10 +131,13 @@ export function tomtomProxy() {
   }
 
   async function fetchUpstream(z, x, y) {
-    const url = 'https://api.tomtom.com/traffic/map/4/tile/flow/relative/'
+    const url =
-      + `${z}/${x}/${y}.pbf?key=${encodeURIComponent(process.env.TOMTOM_API_KEY)}`;
+      'https://api.tomtom.com/traffic/map/4/tile/flow/relative/' +
+      `${z}/${x}/${y}.pbf?key=${encodeURIComponent(process.env.TOMTOM_API_KEY)}`;
     recordUpstreamFetch(); // attempts count — upstream bills the request either way
-    const res = await fetch(url, { signal: AbortSignal.timeout(UPSTREAM_TIMEOUT_MS) });
+    const res = await fetch(url, {
+      signal: AbortSignal.timeout(UPSTREAM_TIMEOUT_MS),
+    });
     if (!res.ok) throw new Error(`HTTP ${res.status}`);
     const buf = Buffer.from(await res.arrayBuffer());
     if (buf.length === 0) throw new Error('empty tile body');
@@ -161,7 +176,12 @@ export function tomtomProxy() {
           if (urlPath === '/status') {
             const hasKey = Boolean(process.env.TOMTOM_API_KEY);
             const b = currentBudget();
-            sendJson(200, { hasKey, dailyCount: b.count, budget: dailyBudgetLimit(), date: b.date });
+            sendJson(200, {
+              hasKey,
+              dailyCount: b.count,
+              budget: dailyBudgetLimit(),
+              date: b.date,
+            });
             return;
           }
 
@@ -208,18 +228,23 @@ export function tomtomProxy() {
 
           // Stale or missing → refresh, single-flight per tile.
           if (!inflight.has(key)) {
-            inflight.set(key, fetchUpstream(z, x, y)
+            inflight.set(
-              .then(async (buf) => {
+              key,
-                const fresh = { at: Date.now(), buf };
+              fetchUpstream(z, x, y)
-                memSet(key, fresh);
+                .then(async (buf) => {
-                await writeDiskTile(key, buf);
+                  const fresh = { at: Date.now(), buf };
-                return fresh;
+                  memSet(key, fresh);
-              })
+                  await writeDiskTile(key, buf);
-              .catch((err) => {
+                  return fresh;
-                console.warn(`[tomtom-proxy] ${key} fetch failed (${err?.message || err}) — serving stale if any`);
+                })
-                return null;
+                .catch((err) => {
-              })
+                  console.warn(
-              .finally(() => inflight.delete(key)));
+                    `[tomtom-proxy] ${key} fetch failed (${err?.message || err}) — serving stale if any`,
+                  );
+                  return null;
+                })
+                .finally(() => inflight.delete(key)),
+            );
           }
           const fresh = await inflight.get(key);
           if (fresh) {

src/data/firmsCsv.js

@@ -17,7 +17,14 @@
  */
 
 /** Header fields that must all be present for a payload to count as FIRMS CSV. */
-const REQUIRED_HEADER_FIELDS = ['latitude', 'longitude', 'acq_date', 'acq_time', 'confidence', 'frp'];
+const REQUIRED_HEADER_FIELDS = [
+  'latitude',
+  'longitude',
+  'acq_date',
+  'acq_time',
+  'confidence',
+  'frp',
+];
 
 const HOUR_MS = 3600_000;
 /** Trailing window size for {@link filterTrailing24h}. */
@@ -36,8 +43,10 @@ export function isLikelyCsv(text) {
   if (typeof text !== 'string') return false;
   const trimmed = text.trimStart();
   if (!trimmed || trimmed[0] === '<') return false;
-  const headerLine = trimmed.slice(0, trimmed.indexOf('\n') === -1 ? undefined : trimmed.indexOf('\n'))
+  const headerLine = trimmed
-    .trim().toLowerCase();
+    .slice(0, trimmed.indexOf('\n') === -1 ? undefined : trimmed.indexOf('\n'))
+    .trim()
+    .toLowerCase();
   const fields = headerLine.split(',').map((f) => f.trim());
   return REQUIRED_HEADER_FIELDS.every((required) => fields.includes(required));
 }
@@ -62,8 +71,13 @@ export function parseFirmsCsv(text) {
   // Locate the header (first non-empty line) and build a column index so the
   // parser survives column reordering across FIRMS product versions.
   let headerIndex = 0;
-  while (headerIndex < lines.length && !lines[headerIndex].trim()) headerIndex += 1;
+  while (headerIndex < lines.length && !lines[headerIndex].trim())
-  const header = lines[headerIndex].trim().toLowerCase().split(',').map((f) => f.trim());
+    headerIndex += 1;
+  const header = lines[headerIndex]
+    .trim()
+    .toLowerCase()
+    .split(',')
+    .map((f) => f.trim());
   const col = new Map(header.map((name, i) => [name, i]));
   const iLat = col.get('latitude');
   const iLon = col.get('longitude');
@@ -114,7 +128,8 @@ export function parseFirmsCsv(text) {
  * @returns {number} Epoch ms, or NaN when unparseable.
  */
 export function acquisitionMsUtc(acqDate, acqTime) {
-  if (typeof acqDate !== 'string' || !/^\d{4}-\d{2}-\d{2}$/.test(acqDate)) return NaN;
+  if (typeof acqDate !== 'string' || !/^\d{4}-\d{2}-\d{2}$/.test(acqDate))
+    return NaN;
   const timeText = String(acqTime ?? '').trim();
   if (!/^\d{1,4}$/.test(timeText)) return NaN;
   const hhmm = timeText.padStart(4, '0');
@@ -123,7 +138,15 @@ export function acquisitionMsUtc(acqDate, acqTime) {
   const day = Number(acqDate.slice(8, 10));
   const hours = Number(hhmm.slice(0, 2));
   const minutes = Number(hhmm.slice(2, 4));
-  if (month < 1 || month > 12 || day < 1 || day > 31 || hours > 23 || minutes > 59) return NaN;
+  if (
+    month < 1 ||
+    month > 12 ||
+    day < 1 ||
+    day > 31 ||
+    hours > 23 ||
+    minutes > 59
+  )
+    return NaN;
   return Date.UTC(year, month - 1, day, hours, minutes);
 }
 

src/data/firmsCsv.test.mjs

@@ -14,10 +14,11 @@ import {
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const FIXTURE = fs.readFileSync(
   path.join(__dirname, 'fixtures', 'firms-viirs-noaa20-sample.csv'),
-  'utf8'
+  'utf8',
 );
 
-const HEADER = 'latitude,longitude,bright_ti4,scan,track,acq_date,acq_time,satellite,instrument,confidence,version,bright_ti5,frp,daynight';
+const HEADER =
+  'latitude,longitude,bright_ti4,scan,track,acq_date,acq_time,satellite,instrument,confidence,version,bright_ti5,frp,daynight';
 
 test('fixture parses to 45 records with finite lat/lon/frp', () => {
   const records = parseFirmsCsv(FIXTURE);
@@ -48,15 +49,24 @@ test('fixture first row maps every field, categorical confidence preserved raw',
 });
 
 test('acquisitionMsUtc: "1006" = 10:06 UTC', () => {
-  assert.equal(acquisitionMsUtc('2026-07-16', '1006'), Date.UTC(2026, 6, 16, 10, 6));
+  assert.equal(
+    acquisitionMsUtc('2026-07-16', '1006'),
+    Date.UTC(2026, 6, 16, 10, 6),
+  );
 });
 
 test('acquisitionMsUtc: non-zero-padded "45" = 00:45 UTC', () => {
-  assert.equal(acquisitionMsUtc('2026-07-16', '45'), Date.UTC(2026, 6, 16, 0, 45));
+  assert.equal(
+    acquisitionMsUtc('2026-07-16', '45'),
+    Date.UTC(2026, 6, 16, 0, 45),
+  );
 });
 
 test('acquisitionMsUtc: "0" = midnight UTC; garbage → NaN', () => {
-  assert.equal(acquisitionMsUtc('2026-07-16', '0'), Date.UTC(2026, 6, 16, 0, 0));
+  assert.equal(
+    acquisitionMsUtc('2026-07-16', '0'),
+    Date.UTC(2026, 6, 16, 0, 0),
+  );
   assert.ok(Number.isNaN(acquisitionMsUtc('not-a-date', '1006')));
   assert.ok(Number.isNaN(acquisitionMsUtc('2026-07-16', 'xx')));
 });
@@ -118,7 +128,12 @@ test('filterTrailing24h: window is [now − 24 h, now + 2 h] inclusive', () => {
   const kept = filterTrailing24h(records, now);
   assert.deepEqual(
     kept.map((r) => `${r.acqDate} ${r.acqTime}`),
-    ['2026-07-15 1200', '2026-07-15 1201', '2026-07-16 1130', '2026-07-16 1400']
+    [
+      '2026-07-15 1200',
+      '2026-07-15 1201',
+      '2026-07-16 1130',
+      '2026-07-16 1400',
+    ],
   );
 });
 

src/data/gbfsSource.js

@@ -19,7 +19,9 @@ const GBFS_ALLOWED_HOSTS = new Set([
  * @returns {boolean}
  */
 export function isAllowedGbfsHost(hostname) {
-  const host = String(hostname || '').trim().toLowerCase();
+  const host = String(hostname || '')
+    .trim()
+    .toLowerCase();
   if (!host) return false;
   if (GBFS_ALLOWED_HOSTS.has(host)) return true;
   return host.endsWith('.publicbikesystem.net');

src/data/terrainHeightsProxy.js

@@ -24,7 +24,10 @@ function defaultSleep(ms) {
 export function parseTerrainPoints(raw) {
   const text = String(raw || '').trim();
   if (!text) return null;
-  const pairs = text.split(';').map((part) => part.trim()).filter(Boolean);
+  const pairs = text
+    .split(';')
+    .map((part) => part.trim())
+    .filter(Boolean);
   if (pairs.length === 0) return null;
   const points = [];
   for (const pair of pairs) {
@@ -83,16 +86,19 @@ export function terrainRetryAfterMs(value, nowMs = Date.now()) {
  * @param {object} [options]
  * @returns {Promise<Array<object>>}
  */
-export async function fetchTerrainChunkWithRetry(points, {
+export async function fetchTerrainChunkWithRetry(
-  fetchImpl = globalThis.fetch,
+  points,
-  sleep = defaultSleep,
+  {
-  random = Math.random,
+    fetchImpl = globalThis.fetch,
-  now = Date.now,
+    sleep = defaultSleep,
-  makeSignal = (timeoutMs) => AbortSignal.timeout(timeoutMs),
+    random = Math.random,
-  attemptTimeoutMs = 30_000,
+    now = Date.now,
-  retryBudgetMs = TERRAIN_RETRY_BUDGET_MS,
+    makeSignal = (timeoutMs) => AbortSignal.timeout(timeoutMs),
-  maxAttempts = TERRAIN_MAX_ATTEMPTS,
+    attemptTimeoutMs = 30_000,
-} = {}) {
+    retryBudgetMs = TERRAIN_RETRY_BUDGET_MS,
+    maxAttempts = TERRAIN_MAX_ATTEMPTS,
+  } = {},
+) {
   const pointsParam = points.map(terrainPointKey).join(';');
   const url = `https://terrain.reearth.land/heights.json?points=${encodeURIComponent(pointsParam)}`;
   let retryStartedAt = null;
@@ -117,7 +123,9 @@ export async function fetchTerrainChunkWithRetry(points, {
       }
       const json = await res.json();
       if (!Array.isArray(json?.results)) {
-        const error = new Error('malformed upstream response (no results array)');
+        const error = new Error(
+          'malformed upstream response (no results array)',
+        );
         error.retryable = false;
         throw error;
       }
@@ -131,14 +139,18 @@ export async function fetchTerrainChunkWithRetry(points, {
       if (remaining <= 0) break;
 
       const retryAfterMs = terrainRetryAfterMs(error?.retryAfter, now());
-      const backoffMs = Math.round(350 * (2 ** attempt) * (0.75 + random() * 0.5));
+      const backoffMs = Math.round(
+        350 * 2 ** attempt * (0.75 + random() * 0.5),
+      );
       const requestedDelay = retryAfterMs ?? backoffMs;
       const delayMs = Math.min(requestedDelay, remaining);
       if (delayMs > 0) await sleep(delayMs);
     }
   }
 
-  throw lastError || new Error('terrain heights upstream retry budget exhausted');
+  throw (
+    lastError || new Error('terrain heights upstream retry budget exhausted')
+  );
 }
 
 /**
@@ -171,7 +183,12 @@ export async function resolveTerrainHeightRequest({
   const missing = [];
   for (const [key, point] of unique) {
     const entry = cache.get(key);
-    if (entry && validTerrainResult(entry.result) && requestStartedAt - entry.at < ttlMs) continue;
+    if (
+      entry &&
+      validTerrainResult(entry.result) &&
+      requestStartedAt - entry.at < ttlMs
+    )
+      continue;
     missing.push({ key, point });
   }
 
@@ -180,7 +197,8 @@ export async function resolveTerrainHeightRequest({
   if (missing.length > 0) {
     try {
       const fetched = await fetchMissing(missing.map((item) => item.point));
-      if (!Array.isArray(fetched)) throw new Error('malformed upstream response (no results array)');
+      if (!Array.isArray(fetched))
+        throw new Error('malformed upstream response (no results array)');
       const fetchedAt = now();
       for (let i = 0; i < missing.length; i += 1) {
         const result = fetched[i];
@@ -188,8 +206,13 @@ export async function resolveTerrainHeightRequest({
         cache.set(missing[i].key, { at: fetchedAt, result });
         cacheChanged = true;
       }
-      if (fetched.length !== missing.length || missing.some((_, i) => !validTerrainResult(fetched[i]))) {
+      if (
-        upstreamError = new Error('upstream omitted one or more terrain heights');
+        fetched.length !== missing.length ||
+        missing.some((_, i) => !validTerrainResult(fetched[i]))
+      ) {
+        upstreamError = new Error(
+          'upstream omitted one or more terrain heights',
+        );
       }
     } catch (error) {
       upstreamError = error;
@@ -203,7 +226,10 @@ export async function resolveTerrainHeightRequest({
   if (results.some((result) => result == null)) {
     return {
       status: 502,
-      body: { error: 'terrain heights fetch failed and no cache available for every point' },
+      body: {
+        error:
+          'terrain heights fetch failed and no cache available for every point',
+      },
       cacheChanged,
       upstreamError,
     };

src/data/terrainHeightsProxy.test.mjs

@@ -18,7 +18,13 @@ test('per-point cache reconstruction preserves exact request order with mixed hi
     [terrainPointKey([10, 1]), { at: now, result: result('cached-a', 101) }],
     [terrainPointKey([30, 3]), { at: now, result: result('cached-c', 303) }],
   ]);
-  const points = [[30, 3], [20, 2], [10, 1], [40, 4], [20, 2]];
+  const points = [
+    [30, 3],
+    [20, 2],
+    [10, 1],
+    [40, 4],
+    [20, 2],
+  ];
   let fetchedPoints = null;
 
   const response = await resolveTerrainHeightRequest({
@@ -33,11 +39,18 @@ test('per-point cache reconstruction preserves exact request order with mixed hi
   });
 
   assert.equal(response.status, 200);
-  assert.deepEqual(fetchedPoints, [[20, 2], [40, 4]], 'only unique cache misses go upstream');
+  assert.deepEqual(
+    fetchedPoints,
+    [
+      [20, 2],
+      [40, 4],
+    ],
+    'only unique cache misses go upstream',
+  );
   assert.deepEqual(
     response.body.results.map((item) => item.id),
     ['cached-c', 'fresh-b', 'cached-a', 'fresh-d', 'fresh-b'],
-    'each output position must map back to its own input point'
+    'each output position must map back to its own input point',
   );
 });
 
@@ -59,7 +72,9 @@ test('429 retry honors Retry-After before the next attempt', async () => {
         return {
           ok: false,
           status: 429,
-          headers: { get: (name) => name.toLowerCase() === 'retry-after' ? '3' : null },
+          headers: {
+            get: (name) => (name.toLowerCase() === 'retry-after' ? '3' : null),
+          },
         };
       }
       return {
@@ -83,21 +98,28 @@ test('permanently failing upstream exhausts retries and returns 502 without fake
     cache: new Map(),
     ttlMs: 10_000,
     now: () => clock,
-    fetchMissing: (missing) => fetchTerrainChunkWithRetry(missing, {
+    fetchMissing: (missing) =>
-      now: () => clock,
+      fetchTerrainChunkWithRetry(missing, {
-      random: () => 0.5,
+        now: () => clock,
-      makeSignal: () => undefined,
+        random: () => 0.5,
-      sleep: async (ms) => { clock += ms; },
+        makeSignal: () => undefined,
-      fetchImpl: async () => {
+        sleep: async (ms) => {
-        attempts += 1;
+          clock += ms;
-        return { ok: false, status: 503, headers: { get: () => null } };
+        },
-      },
+        fetchImpl: async () => {
-    }),
+          attempts += 1;
+          return { ok: false, status: 503, headers: { get: () => null } };
+        },
+      }),
   });
 
   assert.equal(attempts, 4, 'one initial attempt plus three retries');
   assert.equal(response.status, 502);
-  assert.equal('results' in response.body, false, 'failure body must not fabricate positional heights');
+  assert.equal(
+    'results' in response.body,
+    false,
+    'failure body must not fabricate positional heights',
+  );
 });
 
 test('stale per-point entries serve through a failed refresh only when every point is real', async () => {
@@ -106,12 +128,20 @@ test('stale per-point entries serve through a failed refresh only when every poi
     [terrainPointKey([2, 2]), { at: 0, result: result('stale-b', 22) }],
   ]);
   const response = await resolveTerrainHeightRequest({
-    points: [[2, 2], [1, 1]],
+    points: [
+      [2, 2],
+      [1, 1],
+    ],
     cache,
     ttlMs: 100,
     now: () => 1000,
-    fetchMissing: async () => { throw new Error('offline'); },
+    fetchMissing: async () => {
+      throw new Error('offline');
+    },
   });
   assert.equal(response.status, 200);
-  assert.deepEqual(response.body.results.map((item) => item.id), ['stale-b', 'stale-a']);
+  assert.deepEqual(
+    response.body.results.map((item) => item.id),
+    ['stale-b', 'stale-a'],
+  );
 });

src/data/tomtomTiles.js

@@ -29,7 +29,8 @@ const MERCATOR_LAT_LIMIT = 85.05112878;
  * @returns {boolean} True when the coordinate is a fetchable tile.
  */
 export function isValidTileCoord(z, x, y) {
-  if (!Number.isInteger(z) || !Number.isInteger(x) || !Number.isInteger(y)) return false;
+  if (!Number.isInteger(z) || !Number.isInteger(x) || !Number.isInteger(y))
+    return false;
   if (z < MIN_TILE_ZOOM || z > MAX_TILE_ZOOM) return false;
   const n = 2 ** z;
   return x >= 0 && x < n && y >= 0 && y < n;
@@ -47,11 +48,14 @@ export function isValidTileCoord(z, x, y) {
  */
 export function lonLatToTile(lon, lat, z) {
   const n = 2 ** z;
-  const clampedLat = Math.max(-MERCATOR_LAT_LIMIT, Math.min(MERCATOR_LAT_LIMIT, lat));
+  const clampedLat = Math.max(
+    -MERCATOR_LAT_LIMIT,
+    Math.min(MERCATOR_LAT_LIMIT, lat),
+  );
   const latRad = (clampedLat * Math.PI) / 180;
   const x = Math.floor(((lon + 180) / 360) * n);
   const y = Math.floor(
-    ((1 - Math.log(Math.tan(latRad) + 1 / Math.cos(latRad)) / Math.PI) / 2) * n
+    ((1 - Math.log(Math.tan(latRad) + 1 / Math.cos(latRad)) / Math.PI) / 2) * n,
   );
   return {
     x: Math.max(0, Math.min(n - 1, x)),
@@ -70,7 +74,8 @@ export function lonLatToTile(lon, lat, z) {
 export function tileToBBox(z, x, y) {
   const n = 2 ** z;
   const lonAt = (col) => (col / n) * 360 - 180;
-  const latAt = (row) => (Math.atan(Math.sinh(Math.PI * (1 - (2 * row) / n))) * 180) / Math.PI;
+  const latAt = (row) =>
+    (Math.atan(Math.sinh(Math.PI * (1 - (2 * row) / n))) * 180) / Math.PI;
   return {
     west: lonAt(x),
     east: lonAt(x + 1),
@@ -132,10 +137,11 @@ export function utcDayKey(epochMs = Date.now()) {
  * @returns {{date:string, count:number}} Valid state for `dayKey`.
  */
 export function normalizeBudget(state, dayKey) {
-  const valid = Boolean(state)
+  const valid =
-    && state.date === dayKey
+    Boolean(state) &&
-    && Number.isFinite(state.count)
+    state.date === dayKey &&
-    && state.count >= 0;
+    Number.isFinite(state.count) &&
+    state.count >= 0;
   return valid ? state : { date: dayKey, count: 0 };
 }
 

src/data/tomtomTiles.test.mjs

@@ -53,22 +53,39 @@ test('lonLatToTile: downtown Austin @ z12 -> x935 y1686 (matches fixture)', () =
 
 test('tileToBBox: fixture tile bbox contains downtown Austin', () => {
   const bbox = tileToBBox(12, 935, 1686);
-  assert.ok(bbox.west <= AUSTIN.lon && AUSTIN.lon <= bbox.east, `lon outside [${bbox.west}, ${bbox.east}]`);
+  assert.ok(
-  assert.ok(bbox.south <= AUSTIN.lat && AUSTIN.lat <= bbox.north, `lat outside [${bbox.south}, ${bbox.north}]`);
+    bbox.west <= AUSTIN.lon && AUSTIN.lon <= bbox.east,
+    `lon outside [${bbox.west}, ${bbox.east}]`,
+  );
+  assert.ok(
+    bbox.south <= AUSTIN.lat && AUSTIN.lat <= bbox.north,
+    `lat outside [${bbox.south}, ${bbox.north}]`,
+  );
   assert.ok(bbox.north > bbox.south && bbox.east > bbox.west);
 });
 
 test('tileToBBox <-> lonLatToTile roundtrip at the bbox center', () => {
   const bbox = tileToBBox(12, 935, 1686);
-  const center = { lon: (bbox.west + bbox.east) / 2, lat: (bbox.south + bbox.north) / 2 };
+  const center = {
+    lon: (bbox.west + bbox.east) / 2,
+    lat: (bbox.south + bbox.north) / 2,
+  };
   const t = lonLatToTile(center.lon, center.lat, 12);
   assert.deepEqual({ x: t.x, y: t.y }, { x: 935, y: 1686 });
 });
 
 test('lonLatToTile clamps poles and antimeridian into valid range', () => {
-  for (const [lon, lat] of [[-180, 89.9], [180, -89.9], [179.9999, 0]]) {
+  for (const [lon, lat] of [
+    [-180, 89.9],
+    [180, -89.9],
+    [179.9999, 0],
+  ]) {
     const t = lonLatToTile(lon, lat, 12);
-    assert.equal(isValidTileCoord(12, t.x, t.y), true, `invalid tile for ${lon},${lat}: ${t.x},${t.y}`);
+    assert.equal(
+      isValidTileCoord(12, t.x, t.y),
+      true,
+      `invalid tile for ${lon},${lat}: ${t.x},${t.y}`,
+    );
   }
 });
 
@@ -76,14 +93,19 @@ test('lonLatToTile clamps poles and antimeridian into valid range', () => {
 
 test('tilesForBounds: clamped Austin viewport covers the fixture tile', () => {
   const bounds = {
-    south: AUSTIN.lat - 0.025, north: AUSTIN.lat + 0.025,
+    south: AUSTIN.lat - 0.025,
-    west: AUSTIN.lon - 0.025, east: AUSTIN.lon + 0.025,
+    north: AUSTIN.lat + 0.025,
+    west: AUSTIN.lon - 0.025,
+    east: AUSTIN.lon + 0.025,
   };
   const tiles = tilesForBounds(bounds, 12);
-  assert.ok(tiles.length >= 1 && tiles.length <= 4, `tile count ${tiles.length}`);
+  assert.ok(
+    tiles.length >= 1 && tiles.length <= 4,
+    `tile count ${tiles.length}`,
+  );
   assert.ok(
     tiles.some((t) => t.z === 12 && t.x === 935 && t.y === 1686),
-    `fixture tile missing from ${JSON.stringify(tiles)}`
+    `fixture tile missing from ${JSON.stringify(tiles)}`,
   );
 });
 
@@ -102,7 +124,7 @@ test('tilesForBounds: bounds straddling a tile edge return both tiles', () => {
 });
 
 test('tilesForBounds: default zoom is 12 and every tile is valid', () => {
-  const bounds = { south: 51.49, north: 51.52, west: -0.14, east: -0.10 }; // London
+  const bounds = { south: 51.49, north: 51.52, west: -0.14, east: -0.1 }; // London
   const tiles = tilesForBounds(bounds);
   assert.ok(tiles.length >= 1);
   for (const t of tiles) {
@@ -112,7 +134,11 @@ test('tilesForBounds: default zoom is 12 and every tile is valid', () => {
 });
 
 test('tilesForBounds: runaway bounds are truncated by the safety cap', () => {
-  const tiles = tilesForBounds({ south: -60, north: 60, west: -170, east: 170 }, 12, { maxTiles: 16 });
+  const tiles = tilesForBounds(
+    { south: -60, north: 60, west: -170, east: 170 },
+    12,
+    { maxTiles: 16 },
+  );
   assert.ok(tiles.length <= 16, `got ${tiles.length}`);
 });
 
@@ -129,15 +155,30 @@ test('normalizeBudget: same-day state passes through untouched', () => {
 });
 
 test('normalizeBudget: day rollover resets the counter', () => {
-  const rolled = normalizeBudget({ date: '2026-07-16', count: 39999 }, '2026-07-17');
+  const rolled = normalizeBudget(
+    { date: '2026-07-16', count: 39999 },
+    '2026-07-17',
+  );
   assert.deepEqual(rolled, { date: '2026-07-17', count: 0 });
 });
 
 test('normalizeBudget: missing/corrupt state starts fresh', () => {
-  assert.deepEqual(normalizeBudget(null, '2026-07-16'), { date: '2026-07-16', count: 0 });
+  assert.deepEqual(normalizeBudget(null, '2026-07-16'), {
-  assert.deepEqual(normalizeBudget({ date: '2026-07-16', count: NaN }, '2026-07-16'), { date: '2026-07-16', count: 0 });
+    date: '2026-07-16',
-  assert.deepEqual(normalizeBudget({ count: 5 }, '2026-07-16'), { date: '2026-07-16', count: 0 });
+    count: 0,
-  assert.deepEqual(normalizeBudget({ date: '2026-07-16', count: -3 }, '2026-07-16'), { date: '2026-07-16', count: 0 });
+  });
+  assert.deepEqual(
+    normalizeBudget({ date: '2026-07-16', count: NaN }, '2026-07-16'),
+    { date: '2026-07-16', count: 0 },
+  );
+  assert.deepEqual(normalizeBudget({ count: 5 }, '2026-07-16'), {
+    date: '2026-07-16',
+    count: 0,
+  });
+  assert.deepEqual(
+    normalizeBudget({ date: '2026-07-16', count: -3 }, '2026-07-16'),
+    { date: '2026-07-16', count: 0 },
+  );
 });
 
 test('isOverBudget: at or above the limit is over, below is not', () => {

src/tooling/environmentProviders.test.mjs

@@ -9,111 +9,248 @@ import { localProviderPlugins } from '../../server/providers/local.js';
 
 function install(plugin) {
   const routes = new Map();
-  plugin.configureServer({ middlewares: { use(route, handler) { routes.set(route, handler); } } });
+  plugin.configureServer({
+    middlewares: {
+      use(route, handler) {
+        routes.set(route, handler);
+      },
+    },
+  });
   assert.equal(routes.size, 1);
   return async (url = '/', method = 'GET') => {
-    const res = { headersSent: false, writeHead(status, headers) { Object.assign(this, { status, headers, headersSent: true }); }, end(body) { this.body = body; } };
+    const res = {
+      headersSent: false,
+      writeHead(status, headers) {
+        Object.assign(this, { status, headers, headersSent: true });
+      },
+      end(body) {
+        this.body = body;
+      },
+    };
     await [...routes.values()][0]({ url, method }, res);
     return res;
   };
 }
 function isolate(t, env = {}) {
-  for(const [name,value] of Object.entries(env)) {
+  for (const [name, value] of Object.entries(env)) {
     const previous = process.env[name];
-    t.after(() => { if(previous === undefined) delete process.env[name]; else process.env[name] = previous; });
+    t.after(() => {
+      if (previous === undefined) delete process.env[name];
+      else process.env[name] = previous;
+    });
     process.env[name] = value;
   }
-  t.mock.method(fsp, 'readFile', async () => { throw Error('no disk cache'); });
+  t.mock.method(fsp, 'readFile', async () => {
-  t.mock.method(fsp, 'stat', async () => { throw Error('no disk cache'); });
+    throw Error('no disk cache');
+  });
+  t.mock.method(fsp, 'stat', async () => {
+    throw Error('no disk cache');
+  });
   t.mock.method(fsp, 'mkdir', async () => {});
   t.mock.method(fsp, 'writeFile', async () => {});
   t.mock.method(globalThis, 'setInterval', () => ({ unref() {} }));
   t.mock.method(console, 'warn', () => {});
 }
-const json = res => JSON.parse(res.body);
+const json = (res) => JSON.parse(res.body);
 
 test('standalone composition mounts every extracted provider exactly once without acquisition', (t) => {
-  t.mock.method(globalThis, 'fetch', () => { throw Error('construction must not fetch'); });
+  t.mock.method(globalThis, 'fetch', () => {
+    throw Error('construction must not fetch');
+  });
   const plugins = localProviderPlugins();
-  for(const factory of [terrainHeightsProxy,tomtomProxy,firmsProxy,gbfsProxy]) assert.equal(plugins.filter(p=>p.name===factory().name).length,1);
+  for (const factory of [
+    terrainHeightsProxy,
+    tomtomProxy,
+    firmsProxy,
+    gbfsProxy,
+  ])
+    assert.equal(plugins.filter((p) => p.name === factory().name).length, 1);
 });
 
 test('terrain middleware chunks missing points and reconstructs repeated/reordered requests from cache', async (t) => {
-  isolate(t);let calls=0;const sizes=[];
+  isolate(t);
+  let calls = 0;
+  const sizes = [];
   t.mock.method(globalThis, 'fetch', async (raw) => {
-    calls++;const url=new URL(raw);assert.equal(url.origin,'https://terrain.reearth.land');
+    calls++;
-    const points=url.searchParams.get('points').split(';').map(p=>p.split(',').map(Number));sizes.push(points.length);
+    const url = new URL(raw);
-    return Response.json({results:points.map(([lon])=>({ellipsoid:lon+100}))});
+    assert.equal(url.origin, 'https://terrain.reearth.land');
+    const points = url.searchParams
+      .get('points')
+      .split(';')
+      .map((p) => p.split(',').map(Number));
+    sizes.push(points.length);
+    return Response.json({
+      results: points.map(([lon]) => ({ ellipsoid: lon + 100 })),
+    });
   });
-  const request=install(terrainHeightsProxy());
+  const request = install(terrainHeightsProxy());
-  const points=Array.from({length:257},(_,i)=>`${i/100},1`);
+  const points = Array.from({ length: 257 }, (_, i) => `${i / 100},1`);
-  const res=await request('/?points='+points.join(';'));
+  const res = await request('/?points=' + points.join(';'));
-  assert.equal(res.status,200);assert.deepEqual(sizes,[256,1]);
+  assert.equal(res.status, 200);
-  const reordered=await request('/?points=2.56,1;0,1;2.56,1');
+  assert.deepEqual(sizes, [256, 1]);
-  assert.deepEqual(json(reordered),{results:[{ellipsoid:102.56},{ellipsoid:100},{ellipsoid:102.56}]});assert.equal(calls,2);
+  const reordered = await request('/?points=2.56,1;0,1;2.56,1');
-  assert.equal((await request('/?points=invalid')).status,400);
+  assert.deepEqual(json(reordered), {
-  assert.equal((await request('/?points='+Array(2001).fill('0,1').join(';'))).status,500);
+    results: [{ ellipsoid: 102.56 }, { ellipsoid: 100 }, { ellipsoid: 102.56 }],
-  assert.equal(calls,2);
+  });
+  assert.equal(calls, 2);
+  assert.equal((await request('/?points=invalid')).status, 400);
+  assert.equal(
+    (await request('/?points=' + Array(2001).fill('0,1').join(';'))).status,
+    500,
+  );
+  assert.equal(calls, 2);
 });
 
 test('terrain middleware migrates valid legacy disk points without fabricating omitted heights', async (t) => {
   isolate(t);
-  t.mock.method(fsp,'readFile',async()=>JSON.stringify({'1,2;3,4':{at:Date.now(),results:[{ellipsoid:77}]}}));
+  t.mock.method(fsp, 'readFile', async () =>
-  let calls=0;
+    JSON.stringify({
-  t.mock.method(globalThis,'fetch',async(raw)=>{calls++;assert.equal(new URL(raw).searchParams.get('points'),'3.00000,4.00000');return Response.json({results:[{ellipsoid:88}]});});
+      '1,2;3,4': { at: Date.now(), results: [{ ellipsoid: 77 }] },
-  const res=await install(terrainHeightsProxy())('/?points=3,4;1,2');
+    }),
-  assert.deepEqual(json(res),{results:[{ellipsoid:88},{ellipsoid:77}]});assert.equal(calls,1);
+  );
+  let calls = 0;
+  t.mock.method(globalThis, 'fetch', async (raw) => {
+    calls++;
+    assert.equal(new URL(raw).searchParams.get('points'), '3.00000,4.00000');
+    return Response.json({ results: [{ ellipsoid: 88 }] });
+  });
+  const res = await install(terrainHeightsProxy())('/?points=3,4;1,2');
+  assert.deepEqual(json(res), {
+    results: [{ ellipsoid: 88 }, { ellipsoid: 77 }],
+  });
+  assert.equal(calls, 1);
 });
 
 test('traffic middleware preserves keyless mode, caching, stale budget fallback and UTC rollover', async (t) => {
-  isolate(t,{TOMTOM_API_KEY:'',TOMTOM_DAILY_TILE_BUDGET:'1'});
+  isolate(t, { TOMTOM_API_KEY: '', TOMTOM_DAILY_TILE_BUDGET: '1' });
-  let now=Date.UTC(2026,8,12,12);t.mock.method(Date,'now',()=>now);
+  let now = Date.UTC(2026, 8, 12, 12);
-  let calls=0;t.mock.method(globalThis,'fetch',async(raw)=>{calls++;assert.equal(new URL(raw).searchParams.get('key'),'fixture-key');return new Response(new Uint8Array([1,2,3]));});
+  t.mock.method(Date, 'now', () => now);
-  const request=install(tomtomProxy());
+  let calls = 0;
-  assert.equal(json(await request('/status')).hasKey,false);
+  t.mock.method(globalThis, 'fetch', async (raw) => {
-  assert.equal((await request('/flow/8/1/1.pbf')).status,503);
+    calls++;
-  assert.equal((await request('/flow/7/1/1.pbf')).status,400);assert.equal(calls,0);
+    assert.equal(new URL(raw).searchParams.get('key'), 'fixture-key');
-  process.env.TOMTOM_API_KEY='fixture-key';
+    return new Response(new Uint8Array([1, 2, 3]));
-  assert.equal((await request('/flow/8/1/1.pbf')).headers['x-tomtom-cache'],'MISS');
+  });
-  assert.equal((await request('/flow/8/1/1.pbf')).headers['x-tomtom-cache'],'HIT');
+  const request = install(tomtomProxy());
-  assert.equal(json(await request('/status')).dailyCount,1);assert.equal(calls,1);
+  assert.equal(json(await request('/status')).hasKey, false);
-  now+=120001;
+  assert.equal((await request('/flow/8/1/1.pbf')).status, 503);
-  assert.equal((await request('/flow/8/1/1.pbf')).headers['x-tomtom-cache'],'STALE-BUDGET');
+  assert.equal((await request('/flow/7/1/1.pbf')).status, 400);
-  assert.equal((await request('/flow/8/2/1.pbf')).status,429);assert.equal(calls,1);
+  assert.equal(calls, 0);
-  now+=86400000;
+  process.env.TOMTOM_API_KEY = 'fixture-key';
-  assert.equal(json(await request('/status')).dailyCount,0);
+  assert.equal(
-  assert.equal((await request('/flow/8/1/1.pbf')).headers['x-tomtom-cache'],'MISS');assert.equal(calls,2);
+    (await request('/flow/8/1/1.pbf')).headers['x-tomtom-cache'],
+    'MISS',
+  );
+  assert.equal(
+    (await request('/flow/8/1/1.pbf')).headers['x-tomtom-cache'],
+    'HIT',
+  );
+  assert.equal(json(await request('/status')).dailyCount, 1);
+  assert.equal(calls, 1);
+  now += 120001;
+  assert.equal(
+    (await request('/flow/8/1/1.pbf')).headers['x-tomtom-cache'],
+    'STALE-BUDGET',
+  );
+  assert.equal((await request('/flow/8/2/1.pbf')).status, 429);
+  assert.equal(calls, 1);
+  now += 86400000;
+  assert.equal(json(await request('/status')).dailyCount, 0);
+  assert.equal(
+    (await request('/flow/8/1/1.pbf')).headers['x-tomtom-cache'],
+    'MISS',
+  );
+  assert.equal(calls, 2);
 });
 
 test('FIRMS retains a large successful source during partial failure and filters stale data at serve time', async (t) => {
-  isolate(t,{FIRMS_MAP_KEY:''});let now=Date.UTC(2026,8,12,12);t.mock.method(Date,'now',()=>now);
+  isolate(t, { FIRMS_MAP_KEY: '' });
-  let calls=0;
+  let now = Date.UTC(2026, 8, 12, 12);
-  const header='latitude,longitude,acq_date,acq_time,confidence,frp\n';
+  t.mock.method(Date, 'now', () => now);
-  const csv=header+'30,-97,2026-09-12,1200,h,10\n'.repeat(130001);
+  let calls = 0;
-  t.mock.method(globalThis,'fetch',async(raw)=>{
+  const header = 'latitude,longitude,acq_date,acq_time,confidence,frp\n';
-    calls++;const url=new URL(raw);assert.equal(url.hostname,'firms.modaps.eosdis.nasa.gov');
+  const csv = header + '30,-97,2026-09-12,1200,h,10\n'.repeat(130001);
-    if(url.pathname.includes('mapkey_status')) return Response.json({current_transactions:3,transaction_limit:5000});
+  t.mock.method(globalThis, 'fetch', async (raw) => {
-    return url.pathname.includes('VIIRS_NOAA20')?new Response(csv):new Response('offline',{status:503});
+    calls++;
+    const url = new URL(raw);
+    assert.equal(url.hostname, 'firms.modaps.eosdis.nasa.gov');
+    if (url.pathname.includes('mapkey_status'))
+      return Response.json({
+        current_transactions: 3,
+        transaction_limit: 5000,
+      });
+    return url.pathname.includes('VIIRS_NOAA20')
+      ? new Response(csv)
+      : new Response('offline', { status: 503 });
   });
-  const request=install(firmsProxy());
+  const request = install(firmsProxy());
-  assert.equal((await request()).status,503);assert.equal(json(await request('/status')).hasKey,false);assert.equal(calls,0);
+  assert.equal((await request()).status, 503);
-  process.env.FIRMS_MAP_KEY='fixture-key';
+  assert.equal(json(await request('/status')).hasKey, false);
-  const first=json(await request());assert.equal(first.count,130001);assert.equal(first.sources.filter(s=>s.ok).length,1);assert.equal(calls,3);
+  assert.equal(calls, 0);
-  assert.equal(json(await request()).count,130001);assert.equal(calls,3);
+  process.env.FIRMS_MAP_KEY = 'fixture-key';
-  assert.deepEqual(json(await request('/status')).transactions,{used:3,limit:5000});
+  const first = json(await request());
-  now+=25*3600000;t.mock.method(globalThis,'fetch',async()=>new Response('offline',{status:503}));
+  assert.equal(first.count, 130001);
-  const stale=json(await request());assert.equal(stale.stale,true);assert.equal(stale.count,0);
+  assert.equal(first.sources.filter((s) => s.ok).length, 1);
+  assert.equal(calls, 3);
+  assert.equal(json(await request()).count, 130001);
+  assert.equal(calls, 3);
+  assert.deepEqual(json(await request('/status')).transactions, {
+    used: 3,
+    limit: 5000,
+  });
+  now += 25 * 3600000;
+  t.mock.method(
+    globalThis,
+    'fetch',
+    async () => new Response('offline', { status: 503 }),
+  );
+  const stale = json(await request());
+  assert.equal(stale.stale, true);
+  assert.equal(stale.count, 0);
 });
 
 test('GBFS keeps host/path/method guards, response caps and distinct information/status cache headers', async (t) => {
-  let calls=0;t.mock.method(globalThis,'fetch',async(raw)=>{calls++;assert.equal(new URL(raw).hostname,'gbfs.lyft.com');return Response.json({data:{stations:[]}});});
+  let calls = 0;
-  const request=install(gbfsProxy());const target=p=>'/'+encodeURIComponent('https://gbfs.lyft.com/'+p);
+  t.mock.method(globalThis, 'fetch', async (raw) => {
-  assert.equal((await request(target('station_status.json'),'POST')).status,405);
+    calls++;
-  assert.equal((await request('/'+encodeURIComponent('https://example.com/station_status.json'))).status,403);
+    assert.equal(new URL(raw).hostname, 'gbfs.lyft.com');
-  assert.equal((await request(target('gbfs.json'))).status,400);
+    return Response.json({ data: { stations: [] } });
-  assert.equal((await request('/%zz')).status,400);assert.equal(calls,0);
+  });
-  assert.equal((await request(target('station_information.json'))).headers['Cache-Control'],'public, max-age=300');
+  const request = install(gbfsProxy());
-  assert.equal((await request(target('station_status.json'))).headers['Cache-Control'],'no-store');
+  const target = (p) => '/' + encodeURIComponent('https://gbfs.lyft.com/' + p);
-  t.mock.method(globalThis,'fetch',async()=>new Response('x',{headers:{'content-length':String(6*1024*1024)}}));
+  assert.equal(
-  assert.equal((await request(target('station_status.json'))).status,502);
+    (await request(target('station_status.json'), 'POST')).status,
+    405,
+  );
+  assert.equal(
+    (
+      await request(
+        '/' + encodeURIComponent('https://example.com/station_status.json'),
+      )
+    ).status,
+    403,
+  );
+  assert.equal((await request(target('gbfs.json'))).status, 400);
+  assert.equal((await request('/%zz')).status, 400);
+  assert.equal(calls, 0);
+  assert.equal(
+    (await request(target('station_information.json'))).headers[
+      'Cache-Control'
+    ],
+    'public, max-age=300',
+  );
+  assert.equal(
+    (await request(target('station_status.json'))).headers['Cache-Control'],
+    'no-store',
+  );
+  t.mock.method(
+    globalThis,
+    'fetch',
+    async () =>
+      new Response('x', {
+        headers: { 'content-length': String(6 * 1024 * 1024) },
+      }),
+  );
+  assert.equal((await request(target('station_status.json'))).status, 502);
 });