diff --git a/RNComponentsDemo/package-lock.json b/RNComponentsDemo/package-lock.json
index c6966b9..87d9238 100644
--- a/RNComponentsDemo/package-lock.json
+++ b/RNComponentsDemo/package-lock.json
@@ -1178,15 +1178,23 @@
       "dev": true
     },
     "ajv": {
-      "version": "6.10.2",
-      "resolved": "https://registry.npm.taobao.org/ajv/download/ajv-6.10.2.tgz",
-      "integrity": "sha1-086gTWsBeyiUrWkED+yLYj60vVI=",
+      "version": "6.12.6",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
+      "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
       "dev": true,
       "requires": {
-        "fast-deep-equal": "^2.0.1",
+        "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
         "json-schema-traverse": "^0.4.1",
         "uri-js": "^4.2.2"
+      },
+      "dependencies": {
+        "fast-deep-equal": {
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+          "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
+          "dev": true
+        }
       }
     },
     "ansi": {
@@ -2564,12 +2572,6 @@
         "time-stamp": "^1.0.0"
       }
     },
-    "fast-deep-equal": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npm.taobao.org/fast-deep-equal/download/fast-deep-equal-2.0.1.tgz?cache=0&sync_timestamp=1562517919182&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ffast-deep-equal%2Fdownload%2Ffast-deep-equal-2.0.1.tgz",
-      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=",
-      "dev": true
-    },
     "fast-json-stable-stringify": {
       "version": "2.0.0",
       "resolved": "https://registry.npm.taobao.org/fast-json-stable-stringify/download/fast-json-stable-stringify-2.0.0.tgz",
@@ -2768,7 +2770,8 @@
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -2786,11 +2789,13 @@
         },
         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -2803,15 +2808,18 @@
         },
         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -2914,7 +2922,8 @@
         },
         "inherits": {
           "version": "2.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -2924,6 +2933,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -2936,17 +2946,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -2963,6 +2976,7 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -3035,7 +3049,8 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -3045,6 +3060,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -3120,7 +3136,8 @@
         },
         "safe-buffer": {
           "version": "5.1.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3150,6 +3167,7 @@
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -3167,6 +3185,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -3205,11 +3224,13 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         }
       }
     },
@@ -3854,6 +3875,8 @@
     },
     "jest": {
       "version": "24.9.0",
+      "resolved": "https://registry.npmjs.org/jest/-/jest-24.9.0.tgz",
+      "integrity": "sha512-YvkBL1Zm7d2B1+h5fHEOdyjCG+sGMz4f8D86/0HiqJ6MB4MnDc8FgP5vdWsGnemOQro7lnYo8UakZ3+5A0jxGw==",
       "dev": true,
       "requires": {
         "import-local": "^2.0.0",
@@ -5525,6 +5548,8 @@
     },
     "metro-react-native-babel-preset": {
       "version": "0.56.0",
+      "resolved": "https://registry.npmjs.org/metro-react-native-babel-preset/-/metro-react-native-babel-preset-0.56.0.tgz",
+      "integrity": "sha512-MAo1fm0dNn6MVZmylaz6k2HC1MINHLTLfE7O3a9Xz3fAtbGbApisp06rBUfK5uUqIJDmAaKgbiT34lHJSIiE6Q==",
       "dev": true,
       "requires": {
         "@babel/plugin-proposal-class-properties": "^7.0.0",
@@ -6506,6 +6531,8 @@
     },
     "react": {
       "version": "16.8.3",
+      "resolved": "https://registry.npmjs.org/react/-/react-16.8.3.tgz",
+      "integrity": "sha512-3UoSIsEq8yTJuSu0luO1QQWYbgGEILm+eJl2QN/VLDi7hL+EN18M3q3oVZwmVzzBJ3DkM7RMdRwBmZZ+b4IzSA==",
       "requires": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1",
@@ -6556,6 +6583,8 @@
     },
     "react-native": {
       "version": "0.59.10",
+      "resolved": "https://registry.npmjs.org/react-native/-/react-native-0.59.10.tgz",
+      "integrity": "sha512-guB9YW+pBqS1dnfZ4ntzjINopiCUAbdmshU2wMWD1W32fRczLAopi/7Q2iHKP8LTCdxuYZV3fa9Mew5PSuANAw==",
       "requires": {
         "@babel/runtime": "^7.0.0",
         "@react-native-community/cli": "^1.2.1",
@@ -6770,6 +6799,8 @@
     },
     "react-test-renderer": {
       "version": "16.8.3",
+      "resolved": "https://registry.npmjs.org/react-test-renderer/-/react-test-renderer-16.8.3.tgz",
+      "integrity": "sha512-rjJGYebduKNZH0k1bUivVrRLX04JfIQ0FKJLPK10TAb06XWhfi4gTobooF9K/DEFNW98iGac3OSxkfIJUN9Mdg==",
       "dev": true,
       "requires": {
         "object-assign": "^4.1.1",
diff --git a/RNComponentsDemo/yarn.lock b/RNComponentsDemo/yarn.lock
index 49ba046..337ef4c 100644
--- a/RNComponentsDemo/yarn.lock
+++ b/RNComponentsDemo/yarn.lock
@@ -962,11 +962,11 @@ acorn@^6.0.1:
   integrity sha1-AIdQkRn/pPwKAEHR6TpBfmjLhW4=
 
 ajv@^6.5.5:
-  version "6.10.2"
-  resolved "https://registry.npm.taobao.org/ajv/download/ajv-6.10.2.tgz#d3cea04d6b017b2894ad69040fec8b623eb4bd52"
-  integrity sha1-086gTWsBeyiUrWkED+yLYj60vVI=
+  version "6.12.6"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
   dependencies:
-    fast-deep-equal "^2.0.1"
+    fast-deep-equal "^3.1.1"
     fast-json-stable-stringify "^2.0.0"
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
@@ -2179,15 +2179,15 @@ fancy-log@^1.3.2:
     parse-node-version "^1.0.0"
     time-stamp "^1.0.0"
 
-fast-deep-equal@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.npm.taobao.org/fast-deep-equal/download/fast-deep-equal-2.0.1.tgz?cache=0&sync_timestamp=1562517919182&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ffast-deep-equal%2Fdownload%2Ffast-deep-equal-2.0.1.tgz#7b05218ddf9667bf7f370bf7fdb2cb15fdd0aa49"
-  integrity sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=
+fast-deep-equal@^3.1.1:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
 
 fast-json-stable-stringify@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.npm.taobao.org/fast-json-stable-stringify/download/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
-  integrity sha1-1RQsDK7msRifh9OnYREGT4bIu/I=
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
+  integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
 
 fast-levenshtein@~2.0.4:
   version "2.0.6"
@@ -3446,8 +3446,8 @@ json-parse-better-errors@^1.0.1:
 
 json-schema-traverse@^0.4.1:
   version "0.4.1"
-  resolved "https://registry.npm.taobao.org/json-schema-traverse/download/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
-  integrity sha1-afaofZUTq4u4/mO9sJecRI5oRmA=
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
 
 json-schema@0.2.3:
   version "0.2.3"
@@ -4849,6 +4849,11 @@ react-is@^16.8.1, react-is@^16.8.3, react-is@^16.8.4:
   resolved "https://registry.npm.taobao.org/react-is/download/react-is-16.9.0.tgz#21ca9561399aad0ff1a7701c01683e8ca981edcb"
   integrity sha1-IcqVYTmarQ/xp3AcAWg+jKmB7cs=
 
+react-native-picker@^4.3.7:
+  version "4.3.7"
+  resolved "https://registry.yarnpkg.com/react-native-picker/-/react-native-picker-4.3.7.tgz#9842e8c62ff0d8b676e9514d9f9172413c0518a8"
+  integrity sha1-mELoxi/w2LZ26VFNn5FyQTwFGKg=
+
 react-native@0.59.10:
   version "0.59.10"
   resolved "https://registry.npm.taobao.org/react-native/download/react-native-0.59.10.tgz#352f381e382f93a0403be499c9e384bf51c2591c"
@@ -5919,9 +5924,9 @@ unset-value@^1.0.0:
     isobject "^3.0.0"
 
 uri-js@^4.2.2:
-  version "4.2.2"
-  resolved "https://registry.npm.taobao.org/uri-js/download/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
-  integrity sha1-lMVA4f93KVbiKZUHwBCupsiDjrA=
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"
+  integrity sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==
   dependencies:
     punycode "^2.1.0"