From dfc0285bb531ee5719a2b7dd66bb755c767ce5b2 Mon Sep 17 00:00:00 2001
From: bholmesdev <hey@bholmes.dev>
Date: Tue, 24 Jan 2023 17:02:32 -0500
Subject: [PATCH 1/2] fix: respect type guards from collection filter

---
 packages/astro/src/content/template/types.d.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/astro/src/content/template/types.d.ts b/packages/astro/src/content/template/types.d.ts
index 81ea9a95e450..628f5d18df12 100644
--- a/packages/astro/src/content/template/types.d.ts
+++ b/packages/astro/src/content/template/types.d.ts
@@ -44,10 +44,10 @@ declare module 'astro:content' {
 	): E extends ValidEntrySlug<C>
 		? Promise<CollectionEntry<C>>
 		: Promise<CollectionEntry<C> | undefined>;
-	export function getCollection<C extends keyof typeof entryMap>(
+	export function getCollection<C extends keyof typeof entryMap, E extends CollectionEntry<C>>(
 		collection: C,
-		filter?: (data: CollectionEntry<C>) => boolean
-	): Promise<CollectionEntry<C>[]>;
+		filter?: (entry: CollectionEntry<C>) => entry is E
+	): Promise<E[]>;
 
 	type InferEntrySchema<C extends keyof typeof entryMap> = import('astro/zod').infer<
 		Required<ContentConfig['collections'][C]>['schema']

From 18f6ea37fb0558e3611715fe3a1a90fc412e655b Mon Sep 17 00:00:00 2001
From: bholmesdev <hey@bholmes.dev>
Date: Tue, 24 Jan 2023 17:14:38 -0500
Subject: [PATCH 2/2] chore: changeset

---
 .changeset/strong-hotels-sort.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/strong-hotels-sort.md

diff --git a/.changeset/strong-hotels-sort.md b/.changeset/strong-hotels-sort.md
new file mode 100644
index 000000000000..7b674aef566d
--- /dev/null
+++ b/.changeset/strong-hotels-sort.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Add type guard support to filters on `getCollection()`