diff --git a/package.json b/package.json
index 52eb38af..65e72801 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "hydrogen-web",
   "version": "0.2.16",
   "description": "A javascript matrix client prototype, trying to minize RAM usage by offloading as much as possible to IndexedDB",
-  "main": "index.js",
+  "main": "src/lib.ts",
   "directories": {
     "doc": "doc"
   },
diff --git a/src/lib.ts b/src/lib.ts
new file mode 100644
index 00000000..54b8b4f8
--- /dev/null
+++ b/src/lib.ts
@@ -0,0 +1,33 @@
+/*
+Copyright 2021 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// types need to bootstrap a SessionContainer
+export {SessionContainer} from "./matrix/SessionContainer.js";
+export {Session} from "./matrix/Session.js";
+export {Sync} from "./matrix/Sync.js";
+export {Room} from "./matrix/room/Room.js";
+export {Timeline} from "./matrix/room/timeline/Timeline.js";
+export {createNavigation, createRouter} from "./domain/navigation/index.js";
+export {Platform} from "./platform/web/Platform.js";
+// export main view & view models
+export {RootViewModel} from "./domain/RootViewModel.js";
+export {RootView} from "./platform/web/ui/RootView.js";
+export {SessionViewModel} from "./domain/session/SessionViewModel.js";
+export {SessionView} from "./platform/web/ui/session/SessionView.js";
+export {RoomViewModel} from "./domain/session/room/RoomViewModel.js";
+export {RoomView} from "./platform/web/ui/session/room/RoomView.js";
+export {TimelineViewModel} from "./domain/session/room/timeline/TimelineViewModel.js";
+export {TimelineView} from "./platform/web/ui/session/room/TimelineView";
diff --git a/src/sdk.ts b/src/sdk.ts
deleted file mode 100644
index 0754b2ab..00000000
--- a/src/sdk.ts
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
-Copyright 2020 Bruno Windels <bruno@windels.cloud>
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// import {RecordRequester, ReplayRequester} from "./matrix/net/request/replay.js";
-import {SessionContainer} from "./matrix/SessionContainer.js";
-import {RootViewModel} from "./domain/RootViewModel.js";
-import {createNavigation, createRouter} from "./domain/navigation/index.js";
-// Don't use a default export here, as we use multiple entries during legacy build,
-// which does not support default exports,
-// see https://github.com/rollup/plugins/tree/master/packages/multi-entry
-export async function main(platform) {
-    try {
-        // to replay:
-        // const fetchLog = await (await fetch("/fetchlogs/constrainterror.json")).json();
-        // const replay = new ReplayRequester(fetchLog, {delay: false});
-        // const request = replay.request;
-
-        // to record:
-        // const recorder = new RecordRequester(createFetchRequest(clock.createTimeout));
-        // const request = recorder.request;
-        // window.getBrawlFetchLog = () => recorder.log();
-        const navigation = createNavigation();
-        platform.setNavigation(navigation);
-        const urlRouter = createRouter({navigation, history: platform.history});
-        urlRouter.attach();
-        const olmPromise = platform.loadOlm();
-        const workerPromise = platform.loadOlmWorker();
-
-        const vm = new RootViewModel({
-            createSessionContainer: () => {
-                return new SessionContainer({platform, olmPromise, workerPromise});
-            },
-            platform,
-            // the only public interface of the router is to create urls,
-            // so we call it that in the view models
-            urlCreator: urlRouter,
-            navigation,
-        });
-        await vm.load();
-        platform.createAndMountRootView(vm);
-    } catch(err) {
-        console.error(`${err.message}:\n${err.stack}`);
-    }
-}