From 6644466f2612295ec2b524edbeeeaffda16cea5b Mon Sep 17 00:00:00 2001
From: zouhang <1102639563@qq.com>
Date: Thu, 27 Jan 2022 12:56:39 +0800
Subject: [PATCH] fix: filter out illegal sourcemap items (#51)

---
 src/esbuild/utils.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/esbuild/utils.ts b/src/esbuild/utils.ts
index e0752c99..6e6315f3 100644
--- a/src/esbuild/utils.ts
+++ b/src/esbuild/utils.ts
@@ -62,6 +62,8 @@ export function combineSourcemaps (
   filename: string,
   sourcemapList: Array<DecodedSourceMap | RawSourceMap>
 ): RawSourceMap {
+  sourcemapList = sourcemapList.filter(m => m.sources)
+
   if (
     sourcemapList.length === 0 ||
     sourcemapList.every(m => m.sources.length === 0)