diff --git a/ts/components/ButtonDropdown.svelte b/ts/components/ButtonDropdown.svelte
index 20257c66f..f5de681d7 100644
--- a/ts/components/ButtonDropdown.svelte
+++ b/ts/components/ButtonDropdown.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { setContext } from "svelte";
     import { dropdownKey } from "./context-keys";
 
diff --git a/ts/components/ButtonGroup.svelte b/ts/components/ButtonGroup.svelte
index 6b9ad191d..cd66589a5 100644
--- a/ts/components/ButtonGroup.svelte
+++ b/ts/components/ButtonGroup.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import ButtonGroupItem from "./ButtonGroupItem.svelte";
     import { setContext } from "svelte";
     import { writable } from "svelte/store";
diff --git a/ts/components/ButtonGroupItem.svelte b/ts/components/ButtonGroupItem.svelte
index 39f463b58..f0d0bc17f 100644
--- a/ts/components/ButtonGroupItem.svelte
+++ b/ts/components/ButtonGroupItem.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Detachable from "./Detachable.svelte";
 
     import type { ButtonRegistration } from "./buttons";
diff --git a/ts/components/ButtonToolbar.svelte b/ts/components/ButtonToolbar.svelte
index 09951d265..f2d5c81cb 100644
--- a/ts/components/ButtonToolbar.svelte
+++ b/ts/components/ButtonToolbar.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { getContext, setContext } from "svelte";
     import { writable } from "svelte/store";
     import Item from "./Item.svelte";
diff --git a/ts/components/ColorPicker.svelte b/ts/components/ColorPicker.svelte
index ccf825f23..4102e1bb2 100644
--- a/ts/components/ColorPicker.svelte
+++ b/ts/components/ColorPicker.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount, createEventDispatcher } from "svelte";
 
     let inputRef: HTMLInputElement;
diff --git a/ts/components/Detachable.svelte b/ts/components/Detachable.svelte
index 32776bbef..f050ba768 100644
--- a/ts/components/Detachable.svelte
+++ b/ts/components/Detachable.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     export let detached = false;
 </script>
 
diff --git a/ts/components/DropdownItem.svelte b/ts/components/DropdownItem.svelte
index 643ca042b..4ad46cf5b 100644
--- a/ts/components/DropdownItem.svelte
+++ b/ts/components/DropdownItem.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount, createEventDispatcher, getContext } from "svelte";
     import { nightModeKey } from "./context-keys";
 
diff --git a/ts/components/DropdownMenu.svelte b/ts/components/DropdownMenu.svelte
index 98b77c2f8..07bf5dedf 100644
--- a/ts/components/DropdownMenu.svelte
+++ b/ts/components/DropdownMenu.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { setContext } from "svelte";
     import { dropdownKey } from "./context-keys";
 
diff --git a/ts/components/IconButton.svelte b/ts/components/IconButton.svelte
index bb7e5b744..16ad6fcb3 100644
--- a/ts/components/IconButton.svelte
+++ b/ts/components/IconButton.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import IconConstrain from "./IconConstrain.svelte";
     import { getContext, onMount, createEventDispatcher } from "svelte";
     import { nightModeKey, dropdownKey } from "./context-keys";
diff --git a/ts/components/Item.svelte b/ts/components/Item.svelte
index 38ce0b16e..af86b9bb9 100644
--- a/ts/components/Item.svelte
+++ b/ts/components/Item.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Detachable from "./Detachable.svelte";
 
     import type { Register, Registration } from "./registration";
diff --git a/ts/components/LabelButton.svelte b/ts/components/LabelButton.svelte
index 0b2e6bf39..1ed2eff89 100644
--- a/ts/components/LabelButton.svelte
+++ b/ts/components/LabelButton.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount, createEventDispatcher, getContext } from "svelte";
     import { nightModeKey, dropdownKey } from "./context-keys";
     import type { DropdownProps } from "./dropdown";
diff --git a/ts/components/Section.svelte b/ts/components/Section.svelte
index 95ec80c88..299ea22ba 100644
--- a/ts/components/Section.svelte
+++ b/ts/components/Section.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { setContext } from "svelte";
     import { writable } from "svelte/store";
     import Item from "./Item.svelte";
diff --git a/ts/components/SelectButton.svelte b/ts/components/SelectButton.svelte
index 666ceba6c..5008aeb35 100644
--- a/ts/components/SelectButton.svelte
+++ b/ts/components/SelectButton.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount, createEventDispatcher, getContext } from "svelte";
     import { nightModeKey } from "./context-keys";
 
diff --git a/ts/components/SelectOption.svelte b/ts/components/SelectOption.svelte
index e716f64cc..4340788d3 100644
--- a/ts/components/SelectOption.svelte
+++ b/ts/components/SelectOption.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     export let value: string | undefined = undefined;
     export let selected = false;
 </script>
diff --git a/ts/components/Shortcut.svelte b/ts/components/Shortcut.svelte
index fec8779d8..42e54ba4b 100644
--- a/ts/components/Shortcut.svelte
+++ b/ts/components/Shortcut.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { createEventDispatcher, onMount } from "svelte";
     import { registerShortcut } from "../lib/shortcuts";
 
diff --git a/ts/components/StickyFooter.svelte b/ts/components/StickyFooter.svelte
index 14c315878..dd99d3e0e 100644
--- a/ts/components/StickyFooter.svelte
+++ b/ts/components/StickyFooter.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     export let id: string | undefined = undefined;
     let className: string = "";
     export { className as class };
diff --git a/ts/components/StickyHeader.svelte b/ts/components/StickyHeader.svelte
index 3afad60ee..8e5319c7a 100644
--- a/ts/components/StickyHeader.svelte
+++ b/ts/components/StickyHeader.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     export let id: string | undefined = undefined;
     let className: string = "";
     export { className as class };
diff --git a/ts/components/WithContext.svelte b/ts/components/WithContext.svelte
index 5cfba6123..dc3969420 100644
--- a/ts/components/WithContext.svelte
+++ b/ts/components/WithContext.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { Readable } from "svelte/store";
     import { getContext } from "svelte";
 
diff --git a/ts/components/WithDropdown.svelte b/ts/components/WithDropdown.svelte
index 2ffbc8bb0..c797fc88b 100644
--- a/ts/components/WithDropdown.svelte
+++ b/ts/components/WithDropdown.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Dropdown from "bootstrap/js/dist/dropdown";
 
     import { setContext, onDestroy } from "svelte";
diff --git a/ts/components/WithShortcut.svelte b/ts/components/WithShortcut.svelte
index 56424ce01..369f5b1cf 100644
--- a/ts/components/WithShortcut.svelte
+++ b/ts/components/WithShortcut.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onDestroy } from "svelte";
     import { registerShortcut, getPlatformString } from "../lib/shortcuts";
 
diff --git a/ts/components/WithState.svelte b/ts/components/WithState.svelte
index db356ee55..d77ac6ccc 100644
--- a/ts/components/WithState.svelte
+++ b/ts/components/WithState.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript" context="module">
+<script lang="ts" context="module">
     import { writable } from "svelte/store";
 
     type KeyType = Symbol | string;
@@ -43,7 +43,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     }
 </script>
 
-<script lang="typescript">
+<script lang="ts">
     export let key: KeyType;
     export let update: (event: Event) => boolean;
 
diff --git a/ts/deck-options/HtmlAddon.svelte b/ts/deck-options/HtmlAddon.svelte
index 70a8578b7..5b2d42851 100644
--- a/ts/deck-options/HtmlAddon.svelte
+++ b/ts/deck-options/HtmlAddon.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount } from "svelte";
 
     export let html: string;
diff --git a/ts/deck-options/TooltipLabel.svelte b/ts/deck-options/TooltipLabel.svelte
index c74cee0e3..245b15998 100644
--- a/ts/deck-options/TooltipLabel.svelte
+++ b/ts/deck-options/TooltipLabel.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import marked from "marked";
     import { infoCircle } from "./icons";
     import WithTooltip from "../components/WithTooltip.svelte";
diff --git a/ts/editor/AddonButtons.svelte b/ts/editor/AddonButtons.svelte
index 3ce7b7dd8..4fd6201ae 100644
--- a/ts/editor/AddonButtons.svelte
+++ b/ts/editor/AddonButtons.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import ButtonGroup from "../components/ButtonGroup.svelte";
     import ButtonGroupItem from "../components/ButtonGroupItem.svelte";
 
diff --git a/ts/editor/AutocompleteItem.svelte b/ts/editor/AutocompleteItem.svelte
index afe5f7a47..3a8c04af2 100644
--- a/ts/editor/AutocompleteItem.svelte
+++ b/ts/editor/AutocompleteItem.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount, createEventDispatcher, getContext } from "svelte";
     import { nightModeKey } from "../components/context-keys";
 
diff --git a/ts/editor/ClozeButton.svelte b/ts/editor/ClozeButton.svelte
index 8363dc0f7..f87dbd10b 100644
--- a/ts/editor/ClozeButton.svelte
+++ b/ts/editor/ClozeButton.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import IconButton from "../components/IconButton.svelte";
     import WithShortcut from "../components/WithShortcut.svelte";
 
diff --git a/ts/editor/CodeMirror.svelte b/ts/editor/CodeMirror.svelte
index 0f376bba0..279beeb53 100644
--- a/ts/editor/CodeMirror.svelte
+++ b/ts/editor/CodeMirror.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script context="module" lang="typescript">
+<script context="module" lang="ts">
     import { CodeMirror as CodeMirrorLib } from "./code-mirror";
 
     export interface CodeMirrorAPI {
@@ -10,7 +10,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     }
 </script>
 
-<script lang="typescript">
+<script lang="ts">
     import { createEventDispatcher, getContext } from "svelte";
     import type { Writable } from "svelte/store";
     import storeSubscribe from "../sveltelib/store-subscribe";
diff --git a/ts/editor/ColorButtons.svelte b/ts/editor/ColorButtons.svelte
index 244413f49..db751b2d1 100644
--- a/ts/editor/ColorButtons.svelte
+++ b/ts/editor/ColorButtons.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import ButtonGroup from "../components/ButtonGroup.svelte";
     import ButtonGroupItem from "../components/ButtonGroupItem.svelte";
     import IconButton from "../components/IconButton.svelte";
diff --git a/ts/editor/CommandIconButton.svelte b/ts/editor/CommandIconButton.svelte
index 2706df06a..40be0c403 100644
--- a/ts/editor/CommandIconButton.svelte
+++ b/ts/editor/CommandIconButton.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import IconButton from "../components/IconButton.svelte";
     import WithShortcut from "../components/WithShortcut.svelte";
     import WithState from "../components/WithState.svelte";
diff --git a/ts/editor/Components.svelte b/ts/editor/Components.svelte
index 4ac5edbff..79687947d 100644
--- a/ts/editor/Components.svelte
+++ b/ts/editor/Components.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script context="module" lang="typescript">
+<script context="module" lang="ts">
     import IconButton from "../components/IconButton.svelte";
     import LabelButton from "../components/LabelButton.svelte";
     import WithShortcut from "../components/WithShortcut.svelte";
diff --git a/ts/editor/EditorToolbar.svelte b/ts/editor/EditorToolbar.svelte
index 238a4b214..835518c51 100644
--- a/ts/editor/EditorToolbar.svelte
+++ b/ts/editor/EditorToolbar.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script context="module" lang="typescript">
+<script context="module" lang="ts">
     import "./legacy.css";
     import { updateAllState, resetAllState } from "../components/WithState.svelte";
 
@@ -33,7 +33,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     };
 </script>
 
-<script lang="typescript">
+<script lang="ts">
     import StickyHeader from "../components/StickyHeader.svelte";
     import ButtonToolbar from "../components/ButtonToolbar.svelte";
     import Item from "../components/Item.svelte";
diff --git a/ts/editor/FormatBlockButtons.svelte b/ts/editor/FormatBlockButtons.svelte
index cffddcc61..c92c869dd 100644
--- a/ts/editor/FormatBlockButtons.svelte
+++ b/ts/editor/FormatBlockButtons.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import ButtonGroup from "../components/ButtonGroup.svelte";
     import ButtonGroupItem from "../components/ButtonGroupItem.svelte";
     import IconButton from "../components/IconButton.svelte";
diff --git a/ts/editor/FormatInlineButtons.svelte b/ts/editor/FormatInlineButtons.svelte
index a6faea6a5..eb85580b5 100644
--- a/ts/editor/FormatInlineButtons.svelte
+++ b/ts/editor/FormatInlineButtons.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import ButtonGroup from "../components/ButtonGroup.svelte";
     import ButtonGroupItem from "../components/ButtonGroupItem.svelte";
     import CommandIconButton from "./CommandIconButton.svelte";
diff --git a/ts/editor/NoteTypeButtons.svelte b/ts/editor/NoteTypeButtons.svelte
index 63d0fa807..a95e4e768 100644
--- a/ts/editor/NoteTypeButtons.svelte
+++ b/ts/editor/NoteTypeButtons.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { bridgeCommand } from "../lib/bridgecommand";
     import * as tr from "../lib/ftl";
     import { withButton } from "../components/helpers";
diff --git a/ts/editor/PreviewButton.svelte b/ts/editor/PreviewButton.svelte
index f480a5529..bfda149f8 100644
--- a/ts/editor/PreviewButton.svelte
+++ b/ts/editor/PreviewButton.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { bridgeCommand } from "../lib/bridgecommand";
     import * as tr from "../lib/ftl";
     import { withButton } from "../components/helpers";
diff --git a/ts/editor/Tag.svelte b/ts/editor/Tag.svelte
index 59f5ce0dc..fd6233d2e 100644
--- a/ts/editor/Tag.svelte
+++ b/ts/editor/Tag.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount, getContext, createEventDispatcher } from "svelte";
     import { nightModeKey } from "../components/context-keys";
 
diff --git a/ts/editor/TagDeleteBadge.svelte b/ts/editor/TagDeleteBadge.svelte
index e44db1238..5f78fd4d3 100644
--- a/ts/editor/TagDeleteBadge.svelte
+++ b/ts/editor/TagDeleteBadge.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Badge from "../components/Badge.svelte";
     import { deleteIcon } from "./icons";
 
diff --git a/ts/editor/TagEditMode.svelte b/ts/editor/TagEditMode.svelte
index 2f8deae90..572afcb80 100644
--- a/ts/editor/TagEditMode.svelte
+++ b/ts/editor/TagEditMode.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import TagWithTooltip from "./TagWithTooltip.svelte";
     import TagDeleteBadge from "./TagDeleteBadge.svelte";
 
diff --git a/ts/editor/TagEditor.svelte b/ts/editor/TagEditor.svelte
index b3b93cde2..86eef9ff2 100644
--- a/ts/editor/TagEditor.svelte
+++ b/ts/editor/TagEditor.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { createEventDispatcher, tick } from "svelte";
     import type { Writable } from "svelte/store";
     import StickyFooter from "../components/StickyFooter.svelte";
diff --git a/ts/editor/TagInput.svelte b/ts/editor/TagInput.svelte
index 509fbd506..86dc68eb0 100644
--- a/ts/editor/TagInput.svelte
+++ b/ts/editor/TagInput.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount, createEventDispatcher, tick } from "svelte";
     import {
         normalizeTagname,
diff --git a/ts/editor/TagOptionsBadge.svelte b/ts/editor/TagOptionsBadge.svelte
index 79d798515..91ff918af 100644
--- a/ts/editor/TagOptionsBadge.svelte
+++ b/ts/editor/TagOptionsBadge.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import SelectedTagBadge from "./SelectedTagBadge.svelte";
     import AddTagBadge from "./AddTagBadge.svelte";
 
diff --git a/ts/editor/TagWithTooltip.svelte b/ts/editor/TagWithTooltip.svelte
index 3e20da4a6..6d5d7bb41 100644
--- a/ts/editor/TagWithTooltip.svelte
+++ b/ts/editor/TagWithTooltip.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Tag from "./Tag.svelte";
     import WithTooltip from "../components/WithTooltip.svelte";
 
diff --git a/ts/editor/TemplateButtons.svelte b/ts/editor/TemplateButtons.svelte
index 89c30b204..8e41b9a96 100644
--- a/ts/editor/TemplateButtons.svelte
+++ b/ts/editor/TemplateButtons.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import ButtonGroup from "../components/ButtonGroup.svelte";
     import ButtonGroupItem from "../components/ButtonGroupItem.svelte";
     import IconButton from "../components/IconButton.svelte";
diff --git a/ts/editor/WithAutocomplete.svelte b/ts/editor/WithAutocomplete.svelte
index 248a9ed9f..57213b018 100644
--- a/ts/editor/WithAutocomplete.svelte
+++ b/ts/editor/WithAutocomplete.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { createEventDispatcher, tick } from "svelte";
 
     import type Dropdown from "bootstrap/js/dist/dropdown";
diff --git a/ts/editor/WithColorHelper.svelte b/ts/editor/WithColorHelper.svelte
index 74612bf9d..1b6c838e4 100644
--- a/ts/editor/WithColorHelper.svelte
+++ b/ts/editor/WithColorHelper.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { colorHelperIcon } from "./icons";
 
     export let color: string;
diff --git a/ts/editor/image-overlay/FloatButtons.svelte b/ts/editor/image-overlay/FloatButtons.svelte
index 6b862fb40..bcd306be8 100644
--- a/ts/editor/image-overlay/FloatButtons.svelte
+++ b/ts/editor/image-overlay/FloatButtons.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import * as tr from "../../lib/ftl";
     import type { Readable } from "svelte/store";
     import { getContext } from "svelte";
diff --git a/ts/editor/image-overlay/SizeSelect.svelte b/ts/editor/image-overlay/SizeSelect.svelte
index 17f3be4c0..7babcafc2 100644
--- a/ts/editor/image-overlay/SizeSelect.svelte
+++ b/ts/editor/image-overlay/SizeSelect.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import * as tr from "../../lib/ftl";
     import type { Readable } from "svelte/store";
     import { getContext } from "svelte";
diff --git a/ts/editor/image-overlay/WithImageConstrained.svelte b/ts/editor/image-overlay/WithImageConstrained.svelte
index fc20be737..ffcdce6bb 100644
--- a/ts/editor/image-overlay/WithImageConstrained.svelte
+++ b/ts/editor/image-overlay/WithImageConstrained.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { createEventDispatcher, onDestroy } from "svelte";
     import { nodeIsElement } from "../../lib/dom";
 
diff --git a/ts/editor/mathjax-overlay/Editor.svelte b/ts/editor/mathjax-overlay/Editor.svelte
index c56525d03..ef66273e5 100644
--- a/ts/editor/mathjax-overlay/Editor.svelte
+++ b/ts/editor/mathjax-overlay/Editor.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { onMount, createEventDispatcher } from "svelte";
     import { ChangeTimer } from "../change-timer";
     import { CodeMirror, latex, baseOptions } from "../code-mirror";
diff --git a/ts/editor/mathjax-overlay/InlineBlock.svelte b/ts/editor/mathjax-overlay/InlineBlock.svelte
index 836789082..8fe7565b4 100644
--- a/ts/editor/mathjax-overlay/InlineBlock.svelte
+++ b/ts/editor/mathjax-overlay/InlineBlock.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import ButtonGroup from "../../components/ButtonGroup.svelte";
     import ButtonGroupItem from "../../components/ButtonGroupItem.svelte";
     import IconButton from "../../components/IconButton.svelte";
diff --git a/ts/graphs/AddedGraph.svelte b/ts/graphs/AddedGraph.svelte
index f09c474be..466a93f59 100644
--- a/ts/graphs/AddedGraph.svelte
+++ b/ts/graphs/AddedGraph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { Stats } from "../lib/proto";
     import type { PreferenceStore } from "../sveltelib/preferences";
     import { createEventDispatcher } from "svelte";
diff --git a/ts/graphs/AxisTicks.svelte b/ts/graphs/AxisTicks.svelte
index 01737cf50..2176a1381 100644
--- a/ts/graphs/AxisTicks.svelte
+++ b/ts/graphs/AxisTicks.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { GraphBounds } from "./graph-helpers";
 
     export let bounds: GraphBounds;
diff --git a/ts/graphs/ButtonsGraph.svelte b/ts/graphs/ButtonsGraph.svelte
index 965b42318..d043cbce9 100644
--- a/ts/graphs/ButtonsGraph.svelte
+++ b/ts/graphs/ButtonsGraph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { Stats } from "../lib/proto";
     import * as tr from "../lib/ftl";
 
diff --git a/ts/graphs/CalendarGraph.svelte b/ts/graphs/CalendarGraph.svelte
index 0e357d877..0e10f712f 100644
--- a/ts/graphs/CalendarGraph.svelte
+++ b/ts/graphs/CalendarGraph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { createEventDispatcher } from "svelte";
     import type { Stats } from "../lib/proto";
     import type { PreferenceStore } from "../sveltelib/preferences";
diff --git a/ts/graphs/CardCounts.svelte b/ts/graphs/CardCounts.svelte
index 6354d1123..3bd0835ad 100644
--- a/ts/graphs/CardCounts.svelte
+++ b/ts/graphs/CardCounts.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Graph from "./Graph.svelte";
     import InputBox from "./InputBox.svelte";
 
diff --git a/ts/graphs/EaseGraph.svelte b/ts/graphs/EaseGraph.svelte
index 5f1fe30ef..bc699b3bf 100644
--- a/ts/graphs/EaseGraph.svelte
+++ b/ts/graphs/EaseGraph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { Stats } from "../lib/proto";
     import type { PreferenceStore } from "../sveltelib/preferences";
 
diff --git a/ts/graphs/FutureDue.svelte b/ts/graphs/FutureDue.svelte
index 3c0508046..76e2c12c6 100644
--- a/ts/graphs/FutureDue.svelte
+++ b/ts/graphs/FutureDue.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import { createEventDispatcher } from "svelte";
 
     import type { Stats } from "../lib/proto";
diff --git a/ts/graphs/Graph.svelte b/ts/graphs/Graph.svelte
index 6decfddc5..09ab4a050 100644
--- a/ts/graphs/Graph.svelte
+++ b/ts/graphs/Graph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     export let title: string;
     export let subtitle: string | null = null;
 </script>
diff --git a/ts/graphs/GraphRangeRadios.svelte b/ts/graphs/GraphRangeRadios.svelte
index 0f0ce8f4c..861452539 100644
--- a/ts/graphs/GraphRangeRadios.svelte
+++ b/ts/graphs/GraphRangeRadios.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import * as tr from "../lib/ftl";
     import { RevlogRange, GraphRange } from "./graph-helpers";
     import { timeSpan, MONTH, YEAR } from "../lib/time";
diff --git a/ts/graphs/GraphsPage.svelte b/ts/graphs/GraphsPage.svelte
index da1b17d43..87ce1179b 100644
--- a/ts/graphs/GraphsPage.svelte
+++ b/ts/graphs/GraphsPage.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { SvelteComponent } from "svelte/internal";
     import { writable } from "svelte/store";
 
diff --git a/ts/graphs/HistogramGraph.svelte b/ts/graphs/HistogramGraph.svelte
index 16946c33a..c85a57029 100644
--- a/ts/graphs/HistogramGraph.svelte
+++ b/ts/graphs/HistogramGraph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import AxisTicks from "./AxisTicks.svelte";
     import NoDataOverlay from "./NoDataOverlay.svelte";
     import CumulativeOverlay from "./CumulativeOverlay.svelte";
diff --git a/ts/graphs/HourGraph.svelte b/ts/graphs/HourGraph.svelte
index 51d95f083..abf46c925 100644
--- a/ts/graphs/HourGraph.svelte
+++ b/ts/graphs/HourGraph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Graph from "./Graph.svelte";
     import InputBox from "./InputBox.svelte";
     import AxisTicks from "./AxisTicks.svelte";
diff --git a/ts/graphs/IntervalsGraph.svelte b/ts/graphs/IntervalsGraph.svelte
index 1d3b302ca..a89299251 100644
--- a/ts/graphs/IntervalsGraph.svelte
+++ b/ts/graphs/IntervalsGraph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Graph from "./Graph.svelte";
     import InputBox from "./InputBox.svelte";
     import HistogramGraph from "./HistogramGraph.svelte";
diff --git a/ts/graphs/NoDataOverlay.svelte b/ts/graphs/NoDataOverlay.svelte
index e959942bd..e2f9ba06d 100644
--- a/ts/graphs/NoDataOverlay.svelte
+++ b/ts/graphs/NoDataOverlay.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { GraphBounds } from "./graph-helpers";
     import * as tr from "../lib/ftl";
 
diff --git a/ts/graphs/RangeBox.svelte b/ts/graphs/RangeBox.svelte
index 10bc3e936..06d4b004a 100644
--- a/ts/graphs/RangeBox.svelte
+++ b/ts/graphs/RangeBox.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import InputBox from "./InputBox.svelte";
 
     import type { Writable } from "svelte/store";
diff --git a/ts/graphs/ReviewsGraph.svelte b/ts/graphs/ReviewsGraph.svelte
index e5c2e98cf..ccc2b980f 100644
--- a/ts/graphs/ReviewsGraph.svelte
+++ b/ts/graphs/ReviewsGraph.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import Graph from "./Graph.svelte";
     import InputBox from "./InputBox.svelte";
     import NoDataOverlay from "./NoDataOverlay.svelte";
diff --git a/ts/graphs/TableData.svelte b/ts/graphs/TableData.svelte
index 838bb5997..f8e1e16d4 100644
--- a/ts/graphs/TableData.svelte
+++ b/ts/graphs/TableData.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { TableDatum } from "./graph-helpers";
     import { direction } from "../lib/i18n";
     export let tableData: TableDatum[];
diff --git a/ts/graphs/TodayStats.svelte b/ts/graphs/TodayStats.svelte
index 79798e34e..cbe40ef44 100644
--- a/ts/graphs/TodayStats.svelte
+++ b/ts/graphs/TodayStats.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { Stats } from "../lib/proto";
 
     import Graph from "./Graph.svelte";
diff --git a/ts/graphs/WithGraphData.svelte b/ts/graphs/WithGraphData.svelte
index f7a3aee85..71d9c91ad 100644
--- a/ts/graphs/WithGraphData.svelte
+++ b/ts/graphs/WithGraphData.svelte
@@ -2,7 +2,7 @@
 Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
-<script lang="typescript">
+<script lang="ts">
     import type { Writable } from "svelte/store";
     import type { PreferenceRaw, PreferencePayload } from "../sveltelib/preferences";