1 files changed, 48 insertions, 0 deletions
diff --git a/src/templates/assets/javascripts/browser/document/index.ts b/src/templates/assets/javascripts/browser/document/index.ts
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+++ b/src/templates/assets/javascripts/browser/document/index.ts
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+/*
+ * Copyright (c) 2016-2023 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 {
+  ReplaySubject,
+  Subject,
+  fromEvent
+} from "rxjs"
+
+/* ----------------------------------------------------------------------------
+ * Functions
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Watch document
+ *
+ * Documents are implemented as subjects, so all downstream observables are
+ * automatically updated when a new document is emitted.
+ *
+ * @returns Document subject
+ */
+export function watchDocument(): Subject<Document> {
+  const document$ = new ReplaySubject<Document>(1)
+  fromEvent(document, "DOMContentLoaded", { once: true })
+    .subscribe(() => document$.next(document))
+
+  /* Return document */
+  return document$
+}