From 90125566bbaed8b5c6e55ca8dbc432e3433fb73c Mon Sep 17 00:00:00 2001
From: Maximilien Mellen <maxmellen0@gmail.com>
Date: Wed, 19 Feb 2020 21:36:18 +0100
Subject: Enable TS strict mode by default (#3899)

Fixes #3324

Co-authored-by: Kitson Kelly <me@kitsonkelly.com>
---
 std/util/deep_assign.ts | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'std/util/deep_assign.ts')

diff --git a/std/util/deep_assign.ts b/std/util/deep_assign.ts
index 9b57e45dc..9034d89bd 100644
--- a/std/util/deep_assign.ts
+++ b/std/util/deep_assign.ts
@@ -1,4 +1,6 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { assert } from "../testing/asserts.ts";
+
 export function deepAssign(
   target: Record<string, unknown>,
   ...sources: object[]
@@ -24,6 +26,7 @@ export function deepAssign(
       if (typeof target[key] !== `object` || !target[key]) {
         target[key] = {};
       }
+      assert(value);
       deepAssign(target[key] as Record<string, unknown>, value);
     });
   }
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