Run sync as part of `astro check` (#5823)

Co-authored-by: Ben Holmes <hey@bholmes.dev>

3 files changed, 13 insertions, 2 deletions

diff --git a/.changeset/real-nails-clean.md b/.changeset/real-nails-clean.md
new file mode 100644
index 000000000..9748a82ad
--- /dev/null
+++ b/.changeset/real-nails-clean.md
@@ -0,0 +1,5 @@
+---
+'astro': minor
+---
+
+Generate content types when running `astro check`
diff --git a/packages/astro/src/cli/check/index.ts b/packages/astro/src/cli/check/index.ts
index b5e152abd..037525a5b 100644
--- a/packages/astro/src/cli/check/index.ts
+++ b/packages/astro/src/cli/check/index.ts
@@ -1,6 +1,7 @@
 /* eslint-disable no-console */
 import { AstroCheck, DiagnosticSeverity } from '@astrojs/language-server';
 import type { AstroSettings } from '../../@types/astro';
+import type { LogOptions } from '../../core/logger/core.js';
 
 import glob from 'fast-glob';
 import * as fs from 'fs';
@@ -17,9 +18,14 @@ interface Result {
 	hints: number;
 }
 
-export async function check(settings: AstroSettings) {
+export async function check(settings: AstroSettings, { logging }: { logging: LogOptions }) {
 	console.log(bold('astro check'));
 
+	const { sync } = await import('../sync/index.js');
+	const syncRet = await sync(settings, { logging, fs });
+	// early exit on sync failure
+	if (syncRet === 1) return syncRet;
+
 	const root = settings.config.root;
 
 	const spinner = ora(` Getting diagnostics for Astro files in ${fileURLToPath(root)}…`).start();
diff --git a/packages/astro/src/cli/index.ts b/packages/astro/src/cli/index.ts
index d44421e06..a1f5a54f8 100644
--- a/packages/astro/src/cli/index.ts
+++ b/packages/astro/src/cli/index.ts
@@ -206,7 +206,7 @@ async function runCommand(cmd: string, flags: yargs.Arguments) {
 		}
 
 		case 'check': {
-			const ret = await check(settings);
+			const ret = await check(settings, { logging });
 			return process.exit(ret);
 		}