From 6bfe5566887ef47e0a2c457fbe7c009f37679912 Mon Sep 17 00:00:00 2001
From: Guillermo Rauch <rauchg@gmail.com>
Date: Thu, 3 Mar 2016 16:50:16 -0800
Subject: [PATCH] index: throw error if `start` is not defined.

---
 lib/index.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/index.js b/lib/index.js
index 6f610a2..fc20f91 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -37,6 +37,11 @@ export default class Now extends EventEmitter {
       throw new Error(`Failed to read JSON in "${path}/package.json"`);
     }
 
+    if (!pkg.scripts || !pkg.scripts.start) {
+      throw new Error('Missing `start` script in `package.json`. ' +
+        'See: https://docs.npmjs.com/cli/start.');
+    }
+
     if (this._debug) console.time('> [debug] Getting files');
     const files = await getFiles(path, pkg, { limit: ONEMB, debug: this._debug });
     if (this._debug) console.timeEnd('> [debug] Getting files');