From 8829b33d630eedbeb868b147bc681960d285c348 Mon Sep 17 00:00:00 2001
From: Sindre Sorhus <sindresorhus@gmail.com>
Date: Fri, 7 Oct 2016 15:19:56 +0700
Subject: [PATCH] improve error message when extended config doesn't existn

---
 options-manager.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/options-manager.js b/options-manager.js
index e3a6acd2..1daa0d77 100644
--- a/options-manager.js
+++ b/options-manager.js
@@ -131,7 +131,13 @@ function buildConfig(opts) {
 				name = `eslint-config-${name}`;
 			}
 
-			return resolveFrom(opts.cwd, name);
+			const ret = resolveFrom(opts.cwd, name);
+
+			if (!ret) {
+				throw new Error(`Couldn't find ESLint config: ${name}`);
+			}
+
+			return ret;
 		});
 
 		config.baseConfig.extends = config.baseConfig.extends.concat(configs);