From 91de28edee4db92131c37b893261c553f5feabd0 Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Sun, 4 Mar 2018 10:12:09 -0500
Subject: [PATCH] emit warnings to webpack - fixes #35

---
 index.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.js b/index.js
index cc9c6e5d..bd985080 100644
--- a/index.js
+++ b/index.js
@@ -70,6 +70,8 @@ module.exports = function(source, map) {
 
 	if (!options.name) options.name = capitalize(sanitize(options.filename));
 
+	if (!options.onwarn) options.onwarn = warning => this.emitWarning(new Error(warning));
+
 	preprocess(source, options).then(processed => {
 		let { code, map, css, cssMap, ast } = compile(processed.toString(), options);