Open zip file before passing to readers

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/unzip.js b/lib/unzip.js
index 51c34a3..ada19f3 100644
--- a/lib/unzip.js
+++ b/lib/unzip.js
@@ -13,9 +13,9 @@ function openZip(options) {
     if (options.path) {
         return readFile(options.path).then(zipfile.openArrayBuffer);
     } else if (options.buffer) {
-        return zipfile.openArrayBuffer(options.buffer);
+        return promises.resolve(zipfile.openArrayBuffer(options.buffer));
     } else if (options.file) {
-        return options.file;
+        return promises.resolve(options.file);
     } else {
         return promises.reject(new Error("Could not find file in options"));
     }