create daemon

thrower_daemon/node_modules/nostr-tools/lib/esm/nip40.js

@@ -0,0 +1,42 @@
+// nip40.ts
+function getExpiration(event) {
+  const tag = event.tags.find(([name]) => name === "expiration");
+  if (tag) {
+    return new Date(parseInt(tag[1]) * 1e3);
+  }
+}
+function isEventExpired(event) {
+  const expiration = getExpiration(event);
+  if (expiration) {
+    return Date.now() > expiration.getTime();
+  } else {
+    return false;
+  }
+}
+async function waitForExpire(event) {
+  const expiration = getExpiration(event);
+  if (expiration) {
+    const diff = expiration.getTime() - Date.now();
+    if (diff > 0) {
+      await sleep(diff);
+      return event;
+    } else {
+      return event;
+    }
+  } else {
+    throw new Error("Event has no expiration");
+  }
+}
+function onExpire(event, callback) {
+  waitForExpire(event).then(callback).catch(() => {
+  });
+}
+function sleep(ms) {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+export {
+  getExpiration,
+  isEventExpired,
+  onExpire,
+  waitForExpire
+};