worldmap-viewer: initial public history

1 files changed, 10 insertions, 0 deletions

diff --git a/viewer/js/boot.js b/viewer/js/boot.js
new file mode 100644
index 0000000..edaf2ef
--- /dev/null
+++ b/viewer/js/boot.js
@@ -0,0 +1,10 @@
+// boot.js — the first /api/meta: the era in the URL, else the default one.
+export async function metaFor(get, era) {
+  if (!era) return { meta: await get('api/meta'), note: '' };
+  try {
+    return { meta: await get(`api/meta?era=${encodeURIComponent(era)}`), note: '' };
+  } catch (e) {
+    const meta = await get('api/meta');
+    return { meta, note: `Era “${era}”: ${e.message} — showing ${meta.era}` };
+  }
+}