From d0d5e2f984fbfcf8a32a2305d52857f6d7b40a3b Mon Sep 17 00:00:00 2001
From: bholmesdev <hey@bholmes.dev>
Date: Fri, 10 Feb 2023 09:01:04 -0500
Subject: [PATCH] fix: stop bundling markdoc for isTag

---
 .../markdoc/components/astroNode.ts             | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/packages/integrations/markdoc/components/astroNode.ts b/packages/integrations/markdoc/components/astroNode.ts
index 75c48e47e..3d359a9c1 100644
--- a/packages/integrations/markdoc/components/astroNode.ts
+++ b/packages/integrations/markdoc/components/astroNode.ts
@@ -1,4 +1,4 @@
-import { RenderableTreeNode, Tag, renderers, NodeType } from '@markdoc/markdoc';
+import type { RenderableTreeNode, Tag } from '@markdoc/markdoc';
 import { escape } from 'html-escaper';
 
 // TODO: expose `AstroComponentFactory` type from core
@@ -6,11 +6,22 @@ type AstroComponentFactory = (props: Record<string, any>) => any & {
 	isAstroComponentFactory: true;
 };
 
+/**
+ * Copied from Markdoc Tag.isTag implementation
+ * to avoid dragging the whole 40kb Markdoc bundle into your build!
+ */
+function isTag(tag: any): tag is Tag {
+	return !!(tag?.$$mdtype === 'Tag');
+}
+
 export type ComponentRenderer =
 	| AstroComponentFactory
 	| {
 			component: AstroComponentFactory;
-			props?(params: { attributes: Record<string, any>; getTreeNode(): Tag }): Record<string, any>;
+			props?(params: {
+				attributes: Record<string, any>;
+				getTreeNode(): import('@markdoc/markdoc').Tag;
+			}): Record<string, any>;
 	  };
 
 export type AstroNode =
@@ -32,7 +43,7 @@ export function createAstroNode(
 ): AstroNode {
 	if (typeof node === 'string' || typeof node === 'number') {
 		return escape(String(node));
-	} else if (node === null || typeof node !== 'object' || !Tag.isTag(node)) {
+	} else if (node === null || typeof node !== 'object' || !isTag(node)) {
 		return '';
 	}