diff --git a/src/ScalarAuthClient.js b/src/ScalarAuthClient.ts
similarity index 100%
rename from src/ScalarAuthClient.js
rename to src/ScalarAuthClient.ts
diff --git a/src/async-components/views/dialogs/eventindex/ManageEventIndexDialog.js b/src/async-components/views/dialogs/eventindex/ManageEventIndexDialog.tsx
similarity index 100%
rename from src/async-components/views/dialogs/eventindex/ManageEventIndexDialog.js
rename to src/async-components/views/dialogs/eventindex/ManageEventIndexDialog.tsx
diff --git a/src/components/structures/auth/SoftLogout.js b/src/components/structures/auth/SoftLogout.tsx
similarity index 100%
rename from src/components/structures/auth/SoftLogout.js
rename to src/components/structures/auth/SoftLogout.tsx
diff --git a/src/components/views/rooms/EventTile.js b/src/components/views/rooms/EventTile.tsx
similarity index 100%
rename from src/components/views/rooms/EventTile.js
rename to src/components/views/rooms/EventTile.tsx
diff --git a/src/components/views/rooms/MessageComposer.js b/src/components/views/rooms/MessageComposer.tsx
similarity index 100%
rename from src/components/views/rooms/MessageComposer.js
rename to src/components/views/rooms/MessageComposer.tsx
diff --git a/src/components/views/rooms/ThirdPartyMemberInfo.js b/src/components/views/rooms/ThirdPartyMemberInfo.tsx
similarity index 100%
rename from src/components/views/rooms/ThirdPartyMemberInfo.js
rename to src/components/views/rooms/ThirdPartyMemberInfo.tsx
diff --git a/src/components/views/settings/E2eAdvancedPanel.js b/src/components/views/settings/E2eAdvancedPanel.tsx
similarity index 100%
rename from src/components/views/settings/E2eAdvancedPanel.js
rename to src/components/views/settings/E2eAdvancedPanel.tsx
diff --git a/src/components/views/settings/EventIndexPanel.js b/src/components/views/settings/EventIndexPanel.tsx
similarity index 100%
rename from src/components/views/settings/EventIndexPanel.js
rename to src/components/views/settings/EventIndexPanel.tsx
diff --git a/src/components/views/settings/SetIdServer.js b/src/components/views/settings/SetIdServer.tsx
similarity index 100%
rename from src/components/views/settings/SetIdServer.js
rename to src/components/views/settings/SetIdServer.tsx
diff --git a/src/components/views/settings/tabs/room/RolesRoomSettingsTab.js b/src/components/views/settings/tabs/room/RolesRoomSettingsTab.tsx
similarity index 100%
rename from src/components/views/settings/tabs/room/RolesRoomSettingsTab.js
rename to src/components/views/settings/tabs/room/RolesRoomSettingsTab.tsx
diff --git a/src/components/views/settings/tabs/room/SecurityRoomSettingsTab.js b/src/components/views/settings/tabs/room/SecurityRoomSettingsTab.tsx
similarity index 100%
rename from src/components/views/settings/tabs/room/SecurityRoomSettingsTab.js
rename to src/components/views/settings/tabs/room/SecurityRoomSettingsTab.tsx
diff --git a/src/components/views/settings/tabs/user/HelpUserSettingsTab.js b/src/components/views/settings/tabs/user/HelpUserSettingsTab.tsx
similarity index 99%
rename from src/components/views/settings/tabs/user/HelpUserSettingsTab.js
rename to src/components/views/settings/tabs/user/HelpUserSettingsTab.tsx
index e16ee686f5..05f14cebc8 100644
--- a/src/components/views/settings/tabs/user/HelpUserSettingsTab.js
+++ b/src/components/views/settings/tabs/user/HelpUserSettingsTab.tsx
@@ -23,7 +23,7 @@ import AccessibleButton from "../../../elements/AccessibleButton";
 import SdkConfig from "../../../../../SdkConfig";
 import createRoom from "../../../../../createRoom";
 import Modal from "../../../../../Modal";
-import * as sdk from "../../../../../";
+import * as sdk from "../../../../..";
 import PlatformPeg from "../../../../../PlatformPeg";
 import * as KeyboardShortcuts from "../../../../../accessibility/KeyboardShortcuts";
 import UpdateCheckButton from "../../UpdateCheckButton";
diff --git a/src/components/views/settings/tabs/user/MjolnirUserSettingsTab.js b/src/components/views/settings/tabs/user/MjolnirUserSettingsTab.tsx
similarity index 100%
rename from src/components/views/settings/tabs/user/MjolnirUserSettingsTab.js
rename to src/components/views/settings/tabs/user/MjolnirUserSettingsTab.tsx
diff --git a/src/components/views/settings/tabs/user/PreferencesUserSettingsTab.js b/src/components/views/settings/tabs/user/PreferencesUserSettingsTab.tsx
similarity index 100%
rename from src/components/views/settings/tabs/user/PreferencesUserSettingsTab.js
rename to src/components/views/settings/tabs/user/PreferencesUserSettingsTab.tsx
diff --git a/src/indexing/EventIndexPeg.js b/src/indexing/EventIndexPeg.ts
similarity index 100%
rename from src/indexing/EventIndexPeg.js
rename to src/indexing/EventIndexPeg.ts
diff --git a/src/mjolnir/BanList.js b/src/mjolnir/BanList.ts
similarity index 100%
rename from src/mjolnir/BanList.js
rename to src/mjolnir/BanList.ts
diff --git a/src/mjolnir/ListRule.js b/src/mjolnir/ListRule.ts
similarity index 100%
rename from src/mjolnir/ListRule.js
rename to src/mjolnir/ListRule.ts
diff --git a/src/mjolnir/Mjolnir.js b/src/mjolnir/Mjolnir.ts
similarity index 100%
rename from src/mjolnir/Mjolnir.js
rename to src/mjolnir/Mjolnir.ts
diff --git a/src/stores/TypingStore.js b/src/stores/TypingStore.ts
similarity index 100%
rename from src/stores/TypingStore.js
rename to src/stores/TypingStore.ts
diff --git a/src/stores/WidgetEchoStore.js b/src/stores/WidgetEchoStore.ts
similarity index 100%
rename from src/stores/WidgetEchoStore.js
rename to src/stores/WidgetEchoStore.ts
diff --git a/src/utils/AutoDiscoveryUtils.js b/src/utils/AutoDiscoveryUtils.tsx
similarity index 100%
rename from src/utils/AutoDiscoveryUtils.js
rename to src/utils/AutoDiscoveryUtils.tsx
diff --git a/src/utils/MatrixGlob.js b/src/utils/MatrixGlob.ts
similarity index 100%
rename from src/utils/MatrixGlob.js
rename to src/utils/MatrixGlob.ts
diff --git a/src/utils/StorageManager.js b/src/utils/StorageManager.ts
similarity index 100%
rename from src/utils/StorageManager.js
rename to src/utils/StorageManager.ts
diff --git a/src/utils/TypeUtils.js b/src/utils/TypeUtils.ts
similarity index 100%
rename from src/utils/TypeUtils.js
rename to src/utils/TypeUtils.ts
diff --git a/src/utils/permalinks/ElementPermalinkConstructor.js b/src/utils/permalinks/ElementPermalinkConstructor.ts
similarity index 100%
rename from src/utils/permalinks/ElementPermalinkConstructor.js
rename to src/utils/permalinks/ElementPermalinkConstructor.ts
diff --git a/src/utils/permalinks/PermalinkConstructor.js b/src/utils/permalinks/PermalinkConstructor.ts
similarity index 100%
rename from src/utils/permalinks/PermalinkConstructor.js
rename to src/utils/permalinks/PermalinkConstructor.ts
diff --git a/src/utils/permalinks/Permalinks.js b/src/utils/permalinks/Permalinks.ts
similarity index 100%
rename from src/utils/permalinks/Permalinks.js
rename to src/utils/permalinks/Permalinks.ts
diff --git a/src/utils/permalinks/SpecPermalinkConstructor.js b/src/utils/permalinks/SpecPermalinkConstructor.ts
similarity index 100%
rename from src/utils/permalinks/SpecPermalinkConstructor.js
rename to src/utils/permalinks/SpecPermalinkConstructor.ts