fix: correctly formatted ads-b exchange data

src/lib/get-data.mjs

@@ -25,12 +25,12 @@ export async function getOpenskyData() {
 
 export async function getAdbsExchangeData({ lat, lon, radius }) {
   const positionSourceMap = ['Unknown', 'Mode-S', 'ADS-B', 'ADS-B', 'ADS-B', 'ADS-B'];
-  const formatNumber = str => str && Number(`${str}`.replace(/[^0-9.-]/, ''));
-
   const res = await fetch.get(
     `http://public-api.adsbexchange.com/VirtualRadar/AircraftList.json?lat=${lat}&lng=${lon}&fDstL=0&fDstU=${radius}`
   );
 
+  const invalidNumber = /[^0-9.-]/;
+
   return res.data.acList.map(rec => ({
     transponder: `${rec.Icao}`.toLowerCase(),
     callsign: `${rec.Call}`.trim(),
@@ -40,11 +40,11 @@ export async function getAdbsExchangeData({ lat, lon, radius }) {
     location: rec.Lat && rec.Long ? `${rec.Lat},${rec.Long}` : null,
     lat: rec.Lat,
     lon: rec.Long,
-    baro_altitude: formatNumber(rec.Alt),
-    geo_altitude: formatNumber(rec.GAlt),
+    baro_altitude: rec.Alt && rec.Alt.replace(invalidNumber, ''),
+    geo_altitude: rec.Galt && rec.Galt.replace(invalidNumber, ''),
     on_ground: rec.Gnd,
-    velocity: formatNumber(rec.Spd),
-    vertical_rate: formatNumber(rec.Vsi),
+    velocity: rec.Spd && rec.Spd.replace(invalidNumber, ''),
+    vertical_rate: rec.Vsi && rec.Vsi.replace(invalidNumber, ''),
     squawk: rec.Sqk,
     spi: false,
     position_source: positionSourceMap[rec.Trt],