From 6ec09919b5c2695dee784ce0c3accee7f9754bb0 Mon Sep 17 00:00:00 2001
From: Charles Lyding <19598772+clydin@users.noreply.github.com>
Date: Thu, 30 May 2019 17:23:02 -0400
Subject: [PATCH] test: fix prelease CLI E2E check

---
 tests/legacy-cli/e2e/utils/project.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/legacy-cli/e2e/utils/project.ts b/tests/legacy-cli/e2e/utils/project.ts
index df27b4fd027f..7960614d06b5 100644
--- a/tests/legacy-cli/e2e/utils/project.ts
+++ b/tests/legacy-cli/e2e/utils/project.ts
@@ -500,6 +500,7 @@ export function useNg4() {
 
 export async function isPrereleaseCli() {
   const angularCliPkgJson = JSON.parse(await readFile('node_modules/@angular/cli/package.json'));
+  const pre = prerelease(angularCliPkgJson.version);
 
-  return prerelease(angularCliPkgJson.version).length > 0;
+  return pre && pre.length > 0;
 }