From 9ee377963ef10af234360b01412678440346256f Mon Sep 17 00:00:00 2001
From: Lovell Fuller <github@lovell.info>
Date: Sun, 17 Mar 2019 23:07:58 +0000
Subject: [PATCH] Improve error message if libvips tarball is corrupt

---
 install/libvips.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/install/libvips.js b/install/libvips.js
index 673267b3..da2e4ab2 100644
--- a/install/libvips.js
+++ b/install/libvips.js
@@ -34,7 +34,12 @@ const extractTarball = function (tarPath) {
       cwd: vendorPath,
       strict: true
     })
-    .catch(fail);
+    .catch(function (err) {
+      if (/unexpected end of file/.test(err.message)) {
+        npmLog.error('sharp', `Please delete ${tarPath} as it is not a valid tarball`);
+      }
+      fail(err);
+    });
 };
 
 try {