From a683942963a66f4dfcf4a0ba3e94b34f05062a04 Mon Sep 17 00:00:00 2001
From: Levi Mykel Gable <9385378+levimykel@users.noreply.github.com>
Date: Tue, 29 Oct 2024 19:36:49 +0100
Subject: [PATCH] feat: support repeatable links in helpers

---
 src/helpers/asLink.ts   | 19 +++++++++++--------
 src/helpers/isFilled.ts |  7 ++++++-
 2 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/src/helpers/asLink.ts b/src/helpers/asLink.ts
index c16975a9..fe9acbed 100644
--- a/src/helpers/asLink.ts
+++ b/src/helpers/asLink.ts
@@ -140,17 +140,20 @@ export const asLink: {
 		return null as AsLinkReturnType<LinkResolverFunctionReturnType, Field>
 	}
 
-	// Converts document to link field if needed
-	const linkField =
-		// prettier-ignore
-		(
-			// eslint-disable-next-line @typescript-eslint/ban-ts-comment
-			// @ts-ignore - Bug in TypeScript 4.9: https://github.com/microsoft/TypeScript/issues/51501
-			// TODO: Remove the `prettier-ignore` comment when this bug is fixed.
+	// If the link field is repeatable, then it returns the first link in
+	// the array. If not, then it converts document to link field if needed
+	let linkField: LinkField
+	if (Array.isArray(linkFieldOrDocument)) {
+		if (!linkFieldOrDocument[0]) {
+			return null as AsLinkReturnType<LinkResolverFunctionReturnType, Field>
+		}
+		linkField = linkFieldOrDocument[0]
+	} else {
+		linkField =
 			"link_type" in linkFieldOrDocument
 				? linkFieldOrDocument
 				: documentToLinkField(linkFieldOrDocument)
-		) as LinkField
+	}
 
 	// TODO: Remove when we remove support for deprecated tuple-style configuration.
 	const [configObjectOrLinkResolver] = configObjectOrTuple
diff --git a/src/helpers/isFilled.ts b/src/helpers/isFilled.ts
index e6c454ac..c818c87f 100644
--- a/src/helpers/isFilled.ts
+++ b/src/helpers/isFilled.ts
@@ -100,7 +100,8 @@ export const image = imageThumbnail as <
 ) => field is ImageField<ThumbnailNames, "filled">
 
 /**
- * Determines if a link field is filled.
+ * Determines if a link field is filled. If the field is repeatable, it checks
+ * if the link array contains at least one item
  *
  * @param field - Link field to check.
  *
@@ -115,6 +116,10 @@ export const link = <
 >(
 	field: LinkField<TypeEnum, LangEnum, DataInterface> | null | undefined,
 ): field is LinkField<TypeEnum, LangEnum, DataInterface, "filled"> => {
+	if (Array.isArray(field)) {
+		return isNonNullish(field) && isNonEmptyArray(field)
+	}
+
 	return isNonNullish(field) && ("id" in field || "url" in field)
 }