3 files changed, 6 insertions, 6 deletions
diff --git a/ui/lib/session.svelte.js b/ui/lib/session.svelte.js
index 2dae3c4..432fad2 100644
--- a/ui/lib/session.svelte.js
+++ b/ui/lib/session.svelte.js
@@ -7,14 +7,13 @@ import * as r from './state/remote/state.svelte.js';
 import * as l from './state/local/channels.svelte.js';
 import { Watchdog } from './watchdog.js';
 import { DateTime } from 'luxon';
-import { render } from '$lib/markdown.js';
 
 class Channel {
   static fromRemote({ at, id, name }, messages, meta) {
     const sentAt = messages
       .filter((message) => message.channel === id)
       .map((message) => message.at);
-    const lastEventAt = Math.max(at, ...sentAt);
+    const lastEventAt = DateTime.max(at, ...sentAt);
     const lastReadAt = meta.get(id)?.lastReadAt;
 
     const hasUnreads = lastReadAt === undefined || lastEventAt > lastReadAt;
@@ -114,7 +113,7 @@ class Session {
   onMessage(message) {
     const event = JSON.parse(message.data);
     this.remote.onEvent(event);
-    this.local.retainChannels(this.remote.channels.all.keys());
+    this.local.retainChannels(this.remote.channels.all);
     this.watchdog.reset(this.heartbeatMillis());
   }
 
diff --git a/ui/lib/state/local/channels.svelte.js b/ui/lib/state/local/channels.svelte.js
index d86d028..e3ee8df 100644
--- a/ui/lib/state/local/channels.svelte.js
+++ b/ui/lib/state/local/channels.svelte.js
@@ -82,7 +82,8 @@ export class Channels {
     }
   }
 
-  retainChannels(channelIds) {
+  retainChannels(channels) {
+    const channelIds = channels.map((channel) => channel.id);
     const retain = new Set(channelIds);
     for (const channelId of Array.from(this.all.keys())) {
       if (!retain.has(channelId)) {
diff --git a/ui/lib/state/remote/channels.svelte.js b/ui/lib/state/remote/channels.svelte.js
index 8b190dd..19946f2 100644
--- a/ui/lib/state/remote/channels.svelte.js
+++ b/ui/lib/state/remote/channels.svelte.js
@@ -29,10 +29,10 @@ export class Channels {
   }
 
   add({ at, id, name }) {
-    this.all.set(id, Channel.boot({ at, id, name }));
+    this.all.push(Channel.boot({ at, id, name }));
   }
 
   remove(id) {
-    this.all.delete(id);
+    this.all = this.all.filter((channel) => channel.id !== id);
   }
 }