From 24544b15e217593cff48cca57b3a7d8a956cb7c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kat=20March=C3=A1n?= <kzm@sykosomatic.org>
Date: Thu, 4 May 2017 01:07:31 -0700
Subject: [PATCH] fix(cache): reduce race condition window by checking for
 content

---
 cache.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cache.js b/cache.js
index 51acaa8..85d755e 100644
--- a/cache.js
+++ b/cache.js
@@ -42,6 +42,10 @@ module.exports = class Cache {
     opts = opts || {}
     const key = cacheKey(req)
     return cacache.get.info(this._path, key).then(info => {
+      return info && cacache.get.hasContent(
+        this._path, info.integrity, opts
+      ).then(exists => exists && info)
+    }).then(info => {
       if (info && info.metadata && matchDetails(req, {
         url: info.metadata.url,
         reqHeaders: new fetch.Headers(info.metadata.reqHeaders),