From 0d2622da4966997fc0fa54f41236193afe1806a7 Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Wed, 30 Jan 2019 11:14:01 -0500
Subject: [PATCH] sanitize

---
 src/compile/index.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/compile/index.ts b/src/compile/index.ts
index 97011c84e8..390774419d 100644
--- a/src/compile/index.ts
+++ b/src/compile/index.ts
@@ -38,7 +38,13 @@ function get_name(filename) {
 	const parts = filename.split(/[\/\\]/);
 	if (/index\.\w+/.test(parts)) parts.pop();
 
-	const base = parts.pop().replace(/\..+/, "");
+	const base = parts.pop()
+		.replace(/\..+/, "")
+		.replace(/[^a-zA-Z_$0-9]+/g, '_')
+		.replace(/^_/, '')
+		.replace(/_$/, '')
+		.replace(/^(\d)/, '_$1');
+
 	return base[0].toUpperCase() + base.slice(1);
 }