astro/cli/install-package.ts: whichPm may return null if ran in an em…

…pty directory (withastro#10782)
PeterDraex · Apr 23, 2024 · 1b79479 · 1b79479
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diff --git a/.changeset/many-hairs-jump.md b/.changeset/many-hairs-jump.md
@@ -0,0 +1,5 @@
+---
+"astro": patch
+---
+
+Handles possible null value when calling `which-pm` during dynamic package installation
diff --git a/packages/astro/src/cli/install-package.ts b/packages/astro/src/cli/install-package.ts
@@ -101,7 +101,7 @@ async function installPackage(
 	logger: Logger
 ): Promise<boolean> {
 	const cwd = options.cwd ?? process.cwd();
-	const packageManager = (await whichPm(cwd)).name ?? 'npm';
+	const packageManager = (await whichPm(cwd))?.name ?? 'npm';
 	const installCommand = getInstallCommand(packageNames, packageManager);
 
 	if (!installCommand) {