diff --git a/docs/app/io.js b/docs/app/io.js
index bf7b9eb5..f767ca75 100644
--- a/docs/app/io.js
+++ b/docs/app/io.js
@@ -3771,6 +3771,18 @@ async function flyRoute() {
const STORE_KEY = 'navaid.route';
let persistTimer = null;
let quotaWarned = false; // #80: stop scheduling after a quota fail
+// An empty route is stored as the *absence* of the key, not an empty object, so
+// a fresh boot (or a clear-store reload) leaves navaid.route truly cleared
+// rather than re-writing "{waypoints:[]…}".
+function routeIsEmpty() {
+ return state.waypoints.length === 0 &&
+ state.legs.length === 0 &&
+ state.notes.length === 0;
+}
+function writeRoute() {
+ if (routeIsEmpty()) localStorage.removeItem(STORE_KEY);
+ else localStorage.setItem(STORE_KEY, JSON.stringify(routeSnapshotForStorage()));
+}
function persist() {
// When boot detected a corrupt saved blob (issue #73), refuse to overwrite
// it with the empty in-memory state — that's silent data loss. Once the
@@ -3789,7 +3801,7 @@ function persist() {
persistTimer = null;
try {
// center / zoom are not restored (load fits the route) — not saved.
- localStorage.setItem(STORE_KEY, JSON.stringify(routeSnapshotForStorage()));
+ writeRoute();
} catch (e) {
// #80: a full quota used to fail silently. Surface it once so the
// user knows to export the route; other storage-unavailable errors
@@ -3814,7 +3826,7 @@ function flushPersist() {
}
if (quotaWarned) return;
try {
- localStorage.setItem(STORE_KEY, JSON.stringify(routeSnapshotForStorage()));
+ writeRoute();
} catch (e) {
if (e && (e.name === 'QuotaExceededError' || e.code === 22 ||
e.code === 1014 /* NS_ERROR_DOM_QUOTA_REACHED */)) {
diff --git a/docs/index.html b/docs/index.html
index 89dcb315..388ba7b6 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -120,7 +120,7 @@
-
+