From 8325f2de2a1f1cbd539f15170ec2e647e39e3ce8 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Fri, 1 Nov 2019 12:24:12 -0400
Subject: [PATCH] build: fix build script

---
 scripts/build.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/build.js b/scripts/build.js
index a224c309..3959532d 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -99,7 +99,7 @@ async function build(target) {
 
     if (result.succeeded) {
       // concat additional d.ts to rolled-up dts (mostly for JSX)
-      if (pkg.buildOptions.dts) {
+      if (pkg.buildOptions && pkg.buildOptions.dts) {
         const dtsPath = path.resolve(pkgDir, pkg.types)
         const existing = await fs.readFile(dtsPath, 'utf-8')
         const toAdd = await Promise.all(