From 1a3c31c9f347f312f9117e3b1540cb74296d3600 Mon Sep 17 00:00:00 2001
From: Guillaume Jenkins <gujenkin@microsoft.com>
Date: Mon, 17 Oct 2016 07:39:29 -0700
Subject: [PATCH] Deploy no longer throws when no drives found (#269)

pxt deploy no longer throws when no drives found
---
 cmds/cmds.ts | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/cmds/cmds.ts b/cmds/cmds.ts
index c862c7a6..be21defb 100644
--- a/cmds/cmds.ts
+++ b/cmds/cmds.ts
@@ -13,20 +13,20 @@ export function deployCoreAsync(res: ts.pxtc.CompileResult) {
     return getBitDrivesAsync()
         .then(drives => {
             if (drives.length == 0) {
-                let msg = "cannot find any drives to deploy to";
-                console.log(msg);
-                return Promise.reject(new Error(msg));
+                console.log("cannot find any drives to deploy to");
+                return Promise.resolve(0);
             }
 
-            console.log(`copy ${ts.pxtc.BINARY_HEX} to ` + drives.join(", "))
+            console.log(`copy ${ts.pxtc.BINARY_HEX} to ` + drives.join(", "));
 
-            return Promise.map(drives, d =>
-                writeFileAsync(d + ts.pxtc.BINARY_HEX, res.outfiles[ts.pxtc.BINARY_HEX])
-                    .then(() => {
-                        console.log("wrote hex file to " + d)
-                    }))
-        })
-        .then(() => { })
+            let writeHexFile = (filename: string) => {
+                return writeFileAsync(filename + ts.pxtc.BINARY_HEX, res.outfiles[ts.pxtc.BINARY_HEX])
+                    .then(() => console.log("wrote hex file to " + filename));
+            };
+
+            return Promise.map(drives, d => writeHexFile(d))
+                .then(() => drives.length);
+        });
 }
 
 function getBitDrivesAsync(): Promise<string[]> {