diff --git a/typescript/yarn.lock b/typescript/yarn.lock
index 148dc3751..1f749ff25 100644
--- a/typescript/yarn.lock
+++ b/typescript/yarn.lock
@@ -3537,11 +3537,16 @@ buffer-fill@^1.0.0:
   resolved "https://registry.npm.taobao.org/buffer-fill/download/buffer-fill-1.0.0.tgz#f8f78b76789888ef39f205cd637f68e702122b2c"
   integrity sha1-+PeLdniYiO858gXNY39o5wISKyw=
 
-buffer-from@1.x, buffer-from@^1.0.0:
+buffer-from@1.x:
   version "1.1.1"
   resolved "https://registry.npm.taobao.org/buffer-from/download/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
   integrity sha1-MnE7wCj3XAL9txDXx7zsHyxgcO8=
 
+buffer-from@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.2.tgz#2b146a6fd72e80b4f55d255f35ed59a3a9a41bd5"
+  integrity sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==
+
 buffer-indexof@^1.0.0:
   version "1.1.1"
   resolved "https://registry.npm.taobao.org/buffer-indexof/download/buffer-indexof-1.1.1.tgz#52fabcc6a606d1a00302802648ef68f639da268c"
@@ -4198,15 +4203,10 @@ commander@2.17.x:
   resolved "https://registry.npm.taobao.org/commander/download/commander-2.17.1.tgz?cache=0&sync_timestamp=1569919221386&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fcommander%2Fdownload%2Fcommander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
   integrity sha1-vXerfebelCBc6sxy8XFtKfIKd78=
 
-commander@^2.12.1, commander@^2.18.0, commander@^2.19.0, commander@^2.20.0:
-  version "2.20.1"
-  resolved "https://registry.npm.taobao.org/commander/download/commander-2.20.1.tgz?cache=0&sync_timestamp=1569919221386&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fcommander%2Fdownload%2Fcommander-2.20.1.tgz#3863ce3ca92d0831dcf2a102f5fb4b5926afd0f9"
-  integrity sha1-OGPOPKktCDHc8qEC9ftLWSav0Pk=
-
-commander@^2.7.1:
+commander@^2.12.1, commander@^2.18.0, commander@^2.19.0, commander@^2.20.0, commander@^2.7.1:
   version "2.20.3"
-  resolved "https://registry.npm.taobao.org/commander/download/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
-  integrity sha1-/UhehMA+tIgcIHIrpIA16FMa6zM=
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
+  integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
 commander@~2.19.0:
   version "2.19.0"
@@ -12701,9 +12701,9 @@ source-map-support@^0.4.15, source-map-support@~0.4.0:
     source-map "^0.5.6"
 
 source-map-support@^0.5.6, source-map-support@^0.5.9, source-map-support@~0.5.12:
-  version "0.5.13"
-  resolved "https://registry.npm.taobao.org/source-map-support/download/source-map-support-0.5.13.tgz#31b24a9c2e73c2de85066c0feb7d44767ed52932"
-  integrity sha1-MbJKnC5zwt6FBmwP631Edn7VKTI=
+  version "0.5.21"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.21.tgz#04fe7c7f9e1ed2d662233c28cb2b35b9f63f6e4f"
+  integrity sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==
   dependencies:
     buffer-from "^1.0.0"
     source-map "^0.6.0"
@@ -13237,19 +13237,10 @@ terser-webpack-plugin@^1.2.3, terser-webpack-plugin@^1.4.1:
     webpack-sources "^1.4.0"
     worker-farm "^1.7.0"
 
-terser@^4.1.2:
-  version "4.3.6"
-  resolved "https://registry.npm.taobao.org/terser/download/terser-4.3.6.tgz?cache=0&sync_timestamp=1570219676308&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fterser%2Fdownload%2Fterser-4.3.6.tgz#3a36ae197d4470e11069557b4a4bd712f84f998d"
-  integrity sha1-OjauGX1EcOEQaVV7SkvXEvhPmY0=
-  dependencies:
-    commander "^2.20.0"
-    source-map "~0.6.1"
-    source-map-support "~0.5.12"
-
-terser@^4.6.2:
-  version "4.6.3"
-  resolved "https://registry.npm.taobao.org/terser/download/terser-4.6.3.tgz#e33aa42461ced5238d352d2df2a67f21921f8d87"
-  integrity sha1-4zqkJGHO1SONNS0t8qZ/IZIfjYc=
+terser@^4.1.2, terser@^4.6.2:
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.1.tgz#a00e5634562de2239fd404c649051bf6fc21144f"
+  integrity sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==
   dependencies:
     commander "^2.20.0"
     source-map "~0.6.1"