worldmap-viewer: initial public history

1 files changed, 6 insertions, 0 deletions

diff --git a/viewer/js/latest.js b/viewer/js/latest.js
new file mode 100644
index 0000000..d20b5d5
--- /dev/null
+++ b/viewer/js/latest.js
@@ -0,0 +1,6 @@
+// latest.js — overlapping async calls: only the newest one's answer is applied.
+export class Latest {
+  n = 0;
+  next() { return ++this.n; }
+  is(k) { return k === this.n; }
+}