diff --git a/demo/form-generator-dev/yarn.lock b/demo/form-generator-dev/yarn.lock
index 41593ddd..6cc00593 100644
--- a/demo/form-generator-dev/yarn.lock
+++ b/demo/form-generator-dev/yarn.lock
@@ -1827,10 +1827,15 @@ bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.4.0:
   resolved "https://registry.npm.taobao.org/bn.js/download/bn.js-4.11.9.tgz#26d556829458f9d1e81fc48952493d0ba3507828"
   integrity sha1-JtVWgpRY+dHoH8SJUkk9C6NQeCg=
 
-bn.js@^5.1.1:
-  version "5.1.3"
-  resolved "https://registry.npm.taobao.org/bn.js/download/bn.js-5.1.3.tgz#beca005408f642ebebea80b042b4d18d2ac0ee6b"
-  integrity sha1-vsoAVAj2Quvr6oCwQrTRjSrA7ms=
+bn.js@^4.11.9:
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.12.0.tgz#775b3f278efbb9718eec7361f483fb36fbbfea88"
+  integrity sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA==
+
+bn.js@^5.0.0, bn.js@^5.2.1:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-5.2.1.tgz#0bc527a6a0d18d0aa8d5b0538ce4a77dccfa7b70"
+  integrity sha512-eXRvHzWyYPBuB4NBy0cmYQjGitUrtqwbvlzP3G6VFnNRbsZQIxQ10PbKKHt8gZ/HW/D/747aDl+QkDqg3KQLMQ==
 
 body-parser@1.19.0:
   version "1.19.0"
@@ -1896,7 +1901,7 @@ braces@~3.0.2:
   dependencies:
     fill-range "^7.0.1"
 
-brorand@^1.0.1:
+brorand@^1.0.1, brorand@^1.1.0:
   version "1.1.0"
   resolved "https://registry.npm.taobao.org/brorand/download/brorand-1.1.0.tgz#12c25efe40a45e3c323eb8675a0a0ce57b22371f"
   integrity sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=
@@ -1932,7 +1937,7 @@ browserify-des@^1.0.0:
     inherits "^2.0.1"
     safe-buffer "^5.1.2"
 
-browserify-rsa@^4.0.0, browserify-rsa@^4.0.1:
+browserify-rsa@^4.0.0:
   version "4.0.1"
   resolved "https://registry.npm.taobao.org/browserify-rsa/download/browserify-rsa-4.0.1.tgz#21e0abfaf6f2029cf2fafb133567a701d4135524"
   integrity sha1-IeCr+vbyApzy+vsTNWenAdQTVSQ=
@@ -1940,20 +1945,28 @@ browserify-rsa@^4.0.0, browserify-rsa@^4.0.1:
     bn.js "^4.1.0"
     randombytes "^2.0.1"
 
+browserify-rsa@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/browserify-rsa/-/browserify-rsa-4.1.0.tgz#b2fd06b5b75ae297f7ce2dc651f918f5be158c8d"
+  integrity sha512-AdEER0Hkspgno2aR97SAf6vi0y0k8NuOpGnVH3O99rcA5Q6sh8QxcngtHuJ6uXwnfAXNM4Gn1Gb7/MV1+Ymbog==
+  dependencies:
+    bn.js "^5.0.0"
+    randombytes "^2.0.1"
+
 browserify-sign@^4.0.0:
-  version "4.2.1"
-  resolved "https://registry.npm.taobao.org/browserify-sign/download/browserify-sign-4.2.1.tgz?cache=0&sync_timestamp=1596557820440&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fbrowserify-sign%2Fdownload%2Fbrowserify-sign-4.2.1.tgz#eaf4add46dd54be3bb3b36c0cf15abbeba7956c3"
-  integrity sha1-6vSt1G3VS+O7OzbAzxWrvrp5VsM=
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/browserify-sign/-/browserify-sign-4.2.2.tgz#e78d4b69816d6e3dd1c747e64e9947f9ad79bc7e"
+  integrity sha512-1rudGyeYY42Dk6texmv7c4VcQ0EsvVbLwZkA+AQB7SxvXxmcD93jcHie8bzecJ+ChDlmAm2Qyu0+Ccg5uhZXCg==
   dependencies:
-    bn.js "^5.1.1"
-    browserify-rsa "^4.0.1"
+    bn.js "^5.2.1"
+    browserify-rsa "^4.1.0"
     create-hash "^1.2.0"
     create-hmac "^1.1.7"
-    elliptic "^6.5.3"
+    elliptic "^6.5.4"
     inherits "^2.0.4"
-    parse-asn1 "^5.1.5"
-    readable-stream "^3.6.0"
-    safe-buffer "^5.2.0"
+    parse-asn1 "^5.1.6"
+    readable-stream "^3.6.2"
+    safe-buffer "^5.2.1"
 
 browserify-zlib@^0.2.0:
   version "0.2.0"
@@ -3249,6 +3262,19 @@ elliptic@^6.5.3:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.0"
 
+elliptic@^6.5.4:
+  version "6.5.4"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.4.tgz#da37cebd31e79a1367e941b592ed1fbebd58abbb"
+  integrity sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==
+  dependencies:
+    bn.js "^4.11.9"
+    brorand "^1.1.0"
+    hash.js "^1.0.0"
+    hmac-drbg "^1.0.1"
+    inherits "^2.0.4"
+    minimalistic-assert "^1.0.1"
+    minimalistic-crypto-utils "^1.0.1"
+
 emoji-regex@^7.0.1:
   version "7.0.3"
   resolved "https://registry.npm.taobao.org/emoji-regex/download/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
@@ -4288,7 +4314,7 @@ highlight.js@^9.6.0:
   resolved "https://registry.npm.taobao.org/highlight.js/download/highlight.js-9.18.3.tgz?cache=0&sync_timestamp=1596117803790&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fhighlight.js%2Fdownload%2Fhighlight.js-9.18.3.tgz#a1a0a2028d5e3149e2380f8a865ee8516703d634"
   integrity sha1-oaCiAo1eMUniOA+Khl7oUWcD1jQ=
 
-hmac-drbg@^1.0.0:
+hmac-drbg@^1.0.0, hmac-drbg@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npm.taobao.org/hmac-drbg/download/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
   integrity sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=
@@ -6071,7 +6097,7 @@ parent-module@^1.0.0:
   dependencies:
     callsites "^3.0.0"
 
-parse-asn1@^5.0.0, parse-asn1@^5.1.5:
+parse-asn1@^5.0.0, parse-asn1@^5.1.6:
   version "5.1.6"
   resolved "https://registry.npm.taobao.org/parse-asn1/download/parse-asn1-5.1.6.tgz?cache=0&sync_timestamp=1597167313654&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fparse-asn1%2Fdownload%2Fparse-asn1-5.1.6.tgz#385080a3ec13cb62a62d39409cb3e88844cdaed4"
   integrity sha1-OFCAo+wTy2KmLTlAnLPoiETNrtQ=
@@ -6922,6 +6948,15 @@ readable-stream@^3.0.6, readable-stream@^3.1.1, readable-stream@^3.6.0:
     string_decoder "^1.1.1"
     util-deprecate "^1.0.1"
 
+readable-stream@^3.6.2:
+  version "3.6.2"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.6.2.tgz#56a9b36ea965c00c5a93ef31eb111a0f11056967"
+  integrity sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==
+  dependencies:
+    inherits "^2.0.3"
+    string_decoder "^1.1.1"
+    util-deprecate "^1.0.1"
+
 readdirp@^2.2.1:
   version "2.2.1"
   resolved "https://registry.npm.taobao.org/readdirp/download/readdirp-2.2.1.tgz#0e87622a3325aa33e892285caf8b4e846529a525"
@@ -7200,7 +7235,7 @@ safe-buffer@5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   resolved "https://registry.npm.taobao.org/safe-buffer/download/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
   integrity sha1-mR7GnSluAxN0fVm9/St0XDX4go0=
 
-safe-buffer@>=5.1.0, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@^5.2.0, safe-buffer@~5.2.0:
+safe-buffer@>=5.1.0, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@^5.2.0, safe-buffer@^5.2.1, safe-buffer@~5.2.0:
   version "5.2.1"
   resolved "https://registry.npm.taobao.org/safe-buffer/download/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
   integrity sha1-Hq+fqb2x/dTsdfWPnNtOa3gn7sY=