warn users when passing a weird object as options

sokra · sokra · commit b3bc5427969e · 2016-05-05T09:00:55.000+02:00
i. e. when passing a es6 module like webpack#2376
diff --git a/lib/webpack.js b/lib/webpack.js
@@ -15,6 +15,9 @@ function webpack(options, callback) {
 			return webpack(options);
 		}));
 	} else if(typeof options === "object") {
+		if(!options.entry && !options.plugins) {
+			throw new Error("Passed 'options' object don't look like a valid webpack configuration");
+		}
 		new WebpackOptionsDefaulter().process(options);
 
 		compiler = new Compiler();
