diff --git a/client/js/types.d.ts b/client/js/types.d.ts
index c58557b6..a36a0d16 100644
--- a/client/js/types.d.ts
+++ b/client/js/types.d.ts
@@ -1,9 +1,9 @@
 import {defineComponent} from "vue";
 
-import Chan from "../../server/models/chan";
 import Network from "../../server/models/network";
-import User from "../../server/models/user";
 import SharedMessage from "../../shared/types/msg";
+import SharedChan from "../../shared/types/chan";
+import SharedUser from "../../shared/models/user";
 import {Mention} from "../../server/client";
 import {ClientConfiguration} from "../../server/server";
 import {LinkPreview} from "../../server/plugins/irc-events/link";
@@ -16,7 +16,7 @@ interface LoungeWindow extends Window {
 	};
 }
 
-type ClientUser = User & {
+type ClientUser = SharedUser & {
 	//
 };
 
@@ -25,7 +25,7 @@ type ClientMessage = Omit<SharedMessage, "users"> & {
 	users: string[];
 };
 
-type ClientChan = Omit<Chan, "users" | "messages"> & {
+type ClientChan = Omit<SharedChan, "users" | "messages"> & {
 	moreHistoryAvailable: boolean;
 	editTopic: boolean;
 	users: ClientUser[];
diff --git a/shared/types/chan.ts b/shared/types/chan.ts
new file mode 100644
index 00000000..0de5892f
--- /dev/null
+++ b/shared/types/chan.ts
@@ -0,0 +1,43 @@
+import {SharedMsg} from "./msg";
+import {SharedUser} from "./user";
+
+export enum ChanType {
+	CHANNEL = "channel",
+	LOBBY = "lobby",
+	QUERY = "query",
+	SPECIAL = "special",
+}
+
+export enum SpecialChanType {
+	BANLIST = "list_bans",
+	INVITELIST = "list_invites",
+	CHANNELLIST = "list_channels",
+	IGNORELIST = "list_ignored",
+}
+
+export enum ChanState {
+	PARTED = 0,
+	JOINED = 1,
+}
+
+export type SharedChan = {
+	// TODO: don't force existence, figure out how to make TS infer it.
+	id: number;
+	messages: SharedMsg[];
+	name: string;
+	key: string;
+	topic: string;
+	firstUnread: number;
+	unread: number;
+	highlight: number;
+	users: Map<string, SharedUser>;
+	muted: boolean;
+	type: ChanType;
+	state: ChanState;
+
+	userAway?: boolean;
+	special?: SpecialChanType;
+	data?: any;
+	closed?: boolean;
+	num_users?: number;
+};
diff --git a/shared/types/user.ts b/shared/types/user.ts
new file mode 100644
index 00000000..7f689c24
--- /dev/null
+++ b/shared/types/user.ts
@@ -0,0 +1,8 @@
+export type SharedUser = {
+	modes: string[];
+	// Users in the channel have only one mode assigned
+	mode: string;
+	away: string;
+	nick: string;
+	lastMessage: number;
+};