diff --git a/src/platform/types/Platform.d.ts b/src/platform/types/Platform.d.ts
new file mode 100644
index 00000000..cdc0da84
--- /dev/null
+++ b/src/platform/types/Platform.d.ts
@@ -0,0 +1,27 @@
+/*
+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.
+*/
+
+export interface IPlatformConfig {
+    worker: string;
+    downloadSandbox: string;
+    defaultHomeServer: string;
+    serviceWorker?: string;
+    olm: {
+        wasm: string;
+        legacyBundle: string;
+        wasmBundle: string;
+    }
+}