handle some corner cases

sciencemesh · Mar 24, 2023 · 53f2e39 · 53f2e39
1 parent c971bc9
commit 53f2e39
Showing 1 changed file with 23 additions and 21 deletions.
diff --git a/src/pages/_app.jsx b/src/pages/_app.jsx
@@ -27,27 +27,29 @@ export default function App({ Component, pageProps = { title: 'index' } }) {
   const randomProviderConnections = useMemo(
     () =>
       providers
-        .sort(() => 0.5 - Math.random())
-        .map((p1, i) =>
-          Math.random() > 0.5
-            ? providers
-                .slice(i, Math.floor(Math.random() * 1000) % providers.length)
-                .map((p2) => (Math.random() > 0.5 ? [p1, p2] : [p1, p2]))
-            : [],
-        )
-        .flat()
-        .filter(([p1, p2]) => !areEqual(p1, p2) && p1.location && p2.location)
-        .map(([p1, p2]) => {
-          const { lat: startLat, lng: startLng } = p1.location
-          const { lat: endLat, lng: endLng } = p2.location
-          return {
-            startLat,
-            startLng,
-            endLat,
-            endLng,
-            color: '#c7e8f9',
-          }
-        }),
+        ? providers
+            .sort(() => 0.5 - Math.random())
+            .map((p1, i) =>
+              Math.random() > 0.5
+                ? providers
+                    .slice(i, Math.floor(Math.random() * 1000) % providers.length)
+                    .map((p2) => (Math.random() > 0.5 ? [p1, p2] : [p1, p2]))
+                : [],
+            )
+            .flat()
+            .filter(([p1, p2]) => !areEqual(p1, p2) && p1.location && p2.location)
+            .map(([p1, p2]) => {
+              const { lat: startLat, lng: startLng } = p1.location
+              const { lat: endLat, lng: endLng } = p2.location
+              return {
+                startLat,
+                startLng,
+                endLat,
+                endLng,
+                color: '#c7e8f9',
+              }
+            })
+        : {},
     [providers],
   )