diff --git a/ts/deck-options/BUILD.bazel b/ts/deck-options/BUILD.bazel
index d2c589472..d1f7bc0f1 100644
--- a/ts/deck-options/BUILD.bazel
+++ b/ts/deck-options/BUILD.bazel
@@ -50,6 +50,7 @@ ts_library(
         "lib",
         "//ts/components",
         "//ts/lib",
+        "//ts/sveltelib",
         "@npm//@popperjs",
         "@npm//svelte2tsx",
     ],
diff --git a/ts/deck-options/index.ts b/ts/deck-options/index.ts
index 3d6794f89..bb625b592 100644
--- a/ts/deck-options/index.ts
+++ b/ts/deck-options/index.ts
@@ -5,6 +5,8 @@
 @typescript-eslint/no-explicit-any: "off",
  */
 
+import "sveltelib/export-runtime";
+
 import { getDeckOptionsInfo, DeckOptionsState } from "./lib";
 import { setupI18n, ModuleName } from "lib/i18n";
 import { checkNightMode } from "lib/nightmode";
diff --git a/ts/editor/Components.svelte b/ts/editor/Components.svelte
index e6c14f104..c324f1255 100644
--- a/ts/editor/Components.svelte
+++ b/ts/editor/Components.svelte
@@ -5,6 +5,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 <script context="module" lang="typescript">
     import IconButton from "components/IconButton.svelte";
     import LabelButton from "components/LabelButton.svelte";
+    import WithShortcut from "components/WithShortcut.svelte";
     import WithContext from "components/WithContext.svelte";
     import WithState from "components/WithState.svelte";
 
@@ -14,6 +15,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     export const components = {
         IconButton,
         LabelButton,
+        WithShortcut,
         WithContext,
         WithState,
         contextKeys: { ...contextKeys, ...editorContextKeys },
diff --git a/ts/editor/index.ts b/ts/editor/index.ts
index 57671daac..0e269d76b 100644
--- a/ts/editor/index.ts
+++ b/ts/editor/index.ts
@@ -6,6 +6,8 @@
 @typescript-eslint/no-explicit-any: "off",
  */
 
+import "sveltelib/export-runtime";
+
 import { filterHTML } from "html-filter";
 import { updateActiveButtons } from "./toolbar";
 import { setupI18n, ModuleName } from "lib/i18n";
diff --git a/ts/lib/runtime-require.ts b/ts/lib/runtime-require.ts
new file mode 100644
index 000000000..336b0270c
--- /dev/null
+++ b/ts/lib/runtime-require.ts
@@ -0,0 +1,19 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+
+/* eslint
+@typescript-eslint/no-explicit-any: "off",
+ */
+
+/// This can be extended to allow require() calls at runtime, for libraries
+/// that are not included at bundling time.
+export const runtimeLibraries = {};
+
+// Export require() as a global.
+(globalThis as any).require = function (name: string): unknown {
+    const lib = runtimeLibraries[name];
+    if (lib === undefined) {
+        throw new Error(`Cannot require(${name}) at runtime.`);
+    }
+    return lib;
+};
diff --git a/ts/sveltelib/BUILD.bazel b/ts/sveltelib/BUILD.bazel
index 60cbfd715..0803416df 100644
--- a/ts/sveltelib/BUILD.bazel
+++ b/ts/sveltelib/BUILD.bazel
@@ -13,6 +13,7 @@ ts_library(
     tsconfig = "//:tsconfig.json",
     visibility = ["//visibility:public"],
     deps = [
+        "//ts/lib",
         "@npm//svelte",
         "@npm//tslib",
     ],
diff --git a/ts/sveltelib/export-runtime.ts b/ts/sveltelib/export-runtime.ts
new file mode 100644
index 000000000..f8ffeddcd
--- /dev/null
+++ b/ts/sveltelib/export-runtime.ts
@@ -0,0 +1,11 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+//
+// Expose the Svelte runtime bundled with Anki, so that add-ons can require() it.
+// If they were to bundle their own runtime, things like bindings and contexts
+// would not work.
+
+import { runtimeLibraries } from "lib/runtime-require";
+import * as svelteRuntime from "svelte/internal";
+
+runtimeLibraries["svelte/internal"] = svelteRuntime;
diff --git a/ts/yarn.lock b/ts/yarn.lock
index fc5719c20..d2dd309de 100644
--- a/ts/yarn.lock
+++ b/ts/yarn.lock
@@ -4215,9 +4215,9 @@ svelte2tsx@^0.1.133:
     pascal-case "^3.1.1"
 
 svelte@^3.25.0:
-  version "3.38.2"
-  resolved "https://registry.yarnpkg.com/svelte/-/svelte-3.38.2.tgz#55e5c681f793ae349b5cc2fe58e5782af4275ef5"
-  integrity sha512-q5Dq0/QHh4BLJyEVWGe7Cej5NWs040LWjMbicBGZ+3qpFWJ1YObRmUDZKbbovddLC9WW7THTj3kYbTOFmU9fbg==
+  version "3.42.2"
+  resolved "https://registry.yarnpkg.com/svelte/-/svelte-3.42.2.tgz#0246c175c820c1aeca07300c48573a15aae3c1e4"
+  integrity sha512-FOyNYKXb8wdE0Ot+Ctt2/OyDLsNBP8+V6PUE9ag6ZKeLslIou0LnMu1fhtWUA+HjzKTbAM1yj+4PFLtg/3pMJA==
 
 symbol-tree@^3.2.4:
   version "3.2.4"