优化

yarn.lock

@@ -169,6 +169,11 @@ acorn@^5.0.0, acorn@^5.3.0, acorn@^5.5.0:
   resolved "http://registry.npm.taobao.org/acorn/download/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
   integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
 
+add@^2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/add/-/add-2.0.6.tgz#248f0a9f6e5a528ef2295dbeec30532130ae2235"
+  integrity sha512-j5QzrmsokwWWp6kUcJQySpbG+xfOBqqKnup3OIk1pz+kB/80SLorZ9V8zHFLO92Lcd+hbvq8bT+zOGoPkmBV0Q==
+
 ajv-keywords@^2.1.0:
   version "2.1.1"
   resolved "http://registry.npm.taobao.org/ajv-keywords/download/ajv-keywords-2.1.1.tgz#617997fc5f60576894c435f940d819e135b80762"
@@ -2173,6 +2178,11 @@ deepmerge@^1.2.0:
   resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-1.5.2.tgz#10499d868844cdad4fee0842df8c7f6f0c95a753"
   integrity sha512-95k0GDqvBjZavkuvzx/YqVLv/6YYa17fz6ILMSf7neqQITCPbnfEnQvEgMPNjH4kgobe7+WIL0yJEHku+H3qtQ==
 
+default-passive-events@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/default-passive-events/-/default-passive-events-2.0.0.tgz#79b1aa67becbaab38b718469b5480fef92eda649"
+  integrity sha512-eMtt76GpDVngZQ3ocgvRcNCklUMwID1PaNbCNxfpDXuiOXttSh0HzBbda1HU9SIUsDc02vb7g9+3I5tlqe/qMQ==
+
 define-properties@^1.1.2:
   version "1.1.3"
   resolved "http://registry.npm.taobao.org/define-properties/download/define-properties-1.1.3.tgz#cf88da6cbee26fe6db7094f61d870cbd84cee9f1"
@@ -7485,6 +7495,11 @@ yargs@~3.10.0:
     decamelize "^1.0.0"
     window-size "0.1.0"
 
+yarn@^1.22.21:
+  version "1.22.21"
+  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.21.tgz#1959a18351b811cdeedbd484a8f86c3cc3bbaf72"
+  integrity sha512-ynXaJsADJ9JiZ84zU25XkPGOvVMmZ5b7tmTSpKURYwgELdjucAOydqIOrOfTxVYcNXe91xvLZwcRh68SR3liCg==
+
 zrender@5.1.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/zrender/-/zrender-5.1.0.tgz#b6a84c3aa7ccc6642ee0519901ca4c0835c4d85e"