Fixed regression with header title not being updated correctly

src/assets/javascripts/integrations/index.ts

@@ -23,3 +23,4 @@
 export * from "./clipboard"
 export * from "./instant"
 export * from "./search"
+export * from "./version"

src/assets/javascripts/integrations/version/index.ts

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2016-2021 Martin Donath <martin.donath@squidfunk.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+import { configuration } from "~/_"
+import { getElementOrThrow, requestJSON } from "~/browser"
+import { Version, renderVersionSelector } from "~/templates"
+
+/* ----------------------------------------------------------------------------
+ * Functions
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Set up version selector
+ */
+export function setupVersionSelector(): void {
+  const config = configuration()
+  requestJSON<Version[]>(new URL("versions.json", config.base))
+    .subscribe(versions => {
+      const topic = getElementOrThrow(".md-header__topic")
+      topic.appendChild(renderVersionSelector(versions))
+    })
+}