From 7c62da8975be64d499a3df47af75eebdee996a35 Mon Sep 17 00:00:00 2001
From: Masashi Hirano <shisama07@gmail.com>
Date: Sat, 5 Jan 2019 01:59:50 +0900
Subject: [PATCH] Fix to use unknown type in testing/mod.ts
 (denoland/deno_std#73)

Original: https://github.com/denoland/deno_std/commit/8221924d9a814eb8d644b2f47e57687134341cc8
---
 testing/mod.ts | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/testing/mod.ts b/testing/mod.ts
index f33e743fc0..2200020f69 100644
--- a/testing/mod.ts
+++ b/testing/mod.ts
@@ -35,11 +35,9 @@ export function assert(expr: boolean, msg = "") {
   }
 }
 
-// TODO(ry) Use unknown here for parameters types.
-// tslint:disable-next-line:no-any
-export function equal(c: any, d: any): boolean {
+export function equal(c: unknown, d: unknown): boolean {
   const seen = new Map();
-  return (function compare(a, b) {
+  return (function compare(a: unknown, b: unknown) {
     if (Object.is(a, b)) {
       return true;
     }
@@ -47,11 +45,13 @@ export function equal(c: any, d: any): boolean {
       if (seen.get(a) === b) {
         return true;
       }
-      if (Object.keys(a).length !== Object.keys(b).length) {
+      if (Object.keys(a || {}).length !== Object.keys(b || {}).length) {
         return false;
       }
-      for (const key in { ...a, ...b }) {
-        if (!compare(a[key], b[key])) {
+      const merged = { ...a, ...b };
+      for (const key in merged) {
+        type Key = keyof typeof merged;
+        if (!compare(a && a[key as Key], b && b[key as Key])) {
           return false;
         }
       }