From c3b805b512e2ee066deb9d2473078b313d14abac Mon Sep 17 00:00:00 2001
From: Charles Lyding <19598772+clydin@users.noreply.github.com>
Date: Thu, 7 Nov 2019 21:13:03 -0500
Subject: [PATCH] fix(@angular-devkit/core): allow multiselect list defaults

Fixes #16104
---
 packages/angular_devkit/core/src/json/schema/registry.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/angular_devkit/core/src/json/schema/registry.ts b/packages/angular_devkit/core/src/json/schema/registry.ts
index 82e20bdbbe3f..c16fb5f1b9d5 100644
--- a/packages/angular_devkit/core/src/json/schema/registry.ts
+++ b/packages/angular_devkit/core/src/json/schema/registry.ts
@@ -589,7 +589,12 @@ export class CoreSchemaRegistry implements SchemaRegistry {
           raw: schema,
           items,
           multiselect,
-          default: typeof parentSchema.default == 'object' ? undefined : parentSchema.default,
+          default:
+            typeof parentSchema.default == 'object' &&
+            parentSchema.default !== null &&
+            !Array.isArray(parentSchema.default)
+              ? undefined
+              : parentSchema.default as string[],
           async validator(data: JsonValue) {
             try {
               return await it.self.validate(parentSchema, data);