From 9036f638fb5b1490230982f34d98eeb2ab1b2a56 Mon Sep 17 00:00:00 2001
From: Matt Kane <m@mk.gg>
Date: Mon, 21 Oct 2024 14:20:08 +0100
Subject: [PATCH] fix: dynamically load zod-to-ts

---
 .changeset/swift-crabs-exercise.md            |  5 +++++
 packages/astro/src/content/types-generator.ts | 14 +++++++++++---
 2 files changed, 16 insertions(+), 3 deletions(-)
 create mode 100644 .changeset/swift-crabs-exercise.md

diff --git a/.changeset/swift-crabs-exercise.md b/.changeset/swift-crabs-exercise.md
new file mode 100644
index 000000000000..4da2c886595a
--- /dev/null
+++ b/.changeset/swift-crabs-exercise.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fixes an issue with some package managers where sites would not build if TypeScript was not installed.
diff --git a/packages/astro/src/content/types-generator.ts b/packages/astro/src/content/types-generator.ts
index e031293da047..70c0fd9b79fc 100644
--- a/packages/astro/src/content/types-generator.ts
+++ b/packages/astro/src/content/types-generator.ts
@@ -6,7 +6,6 @@ import { bold, cyan } from 'kleur/colors';
 import { type ViteDevServer, normalizePath } from 'vite';
 import { type ZodSchema, z } from 'zod';
 import { zodToJsonSchema } from 'zod-to-json-schema';
-import { printNode, zodToTs } from 'zod-to-ts';
 import type { AstroSettings, ContentEntryType } from '../@types/astro.js';
 import { AstroError } from '../core/errors/errors.js';
 import { AstroErrorData } from '../core/errors/index.js';
@@ -396,8 +395,17 @@ async function typeForCollection<T extends keyof ContentConfig['collections']>(
 	if (collection?.type === CONTENT_LAYER_TYPE) {
 		const schema = await getContentLayerSchema(collection, collectionKey);
 		if (schema) {
-			const ast = zodToTs(schema);
-			return printNode(ast.node);
+			try {
+				const zodToTs = await import('zod-to-ts');
+				const ast = zodToTs.zodToTs(schema);
+				return zodToTs.printNode(ast.node);
+			} catch (err: any) {
+				// zod-to-ts is sad if we don't have TypeScript installed, but that's fine as we won't be needing types in that case
+				if (err.message.includes("Cannot find package 'typescript'")) {
+					return 'any';
+				}
+				throw err;
+			}
 		}
 	}
 	return 'any';