Update dependency react-docgen to v4

Author: renovate-bot

package.json

@@ -86,7 +86,7 @@
     "path": "^0.12.7",
     "postcss-modules": "^1.4.1",
     "raw-loader": "^1.0.0",
-    "react-docgen": "3.0.0",
+    "react-docgen": "4.1.1",
     "react-styleguidist": "^8.0.6",
     "react-svg-loader": "^2.1.0",
     "react-test-renderer": "^16.8.3",

yarn.lock

@@ -1483,6 +1483,11 @@ ast-types@0.11.7, ast-types@^0.11.6:
   resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.11.7.tgz#f318bf44e339db6a320be0009ded64ec1471f46c"
   integrity sha512-2mP3TwtkY/aTv5X3ZsMpNAbOnyoC/aMJwJSoaELPkHId0nSQgFcnU4dRW3isxiz7+zBexk0ym3WNVjMiQBnJSw==
 
+ast-types@0.12.4:
+  version "0.12.4"
+  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.12.4.tgz#71ce6383800f24efc9a1a3308f3a6e420a0974d1"
+  integrity sha512-ky/YVYCbtVAS8TdMIaTiPFHwEpRB5z1hctepJplTr3UW5q8TDrpIMCILyk8pmLxGtn2KCtC/lSn7zOsaI7nzDw==
+
 ast-types@^0.7.2:
   version "0.7.8"
   resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.7.8.tgz#902d2e0d60d071bdcd46dc115e1809ed11c138a9"
@@ -9907,10 +9912,10 @@ react-docgen-displayname-handler@^2.1.0:
   dependencies:
     ast-types "0.11.5"
 
-react-docgen@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/react-docgen/-/react-docgen-3.0.0.tgz#79c6e1b1870480c3c2bc1a65bede0577a11c38cd"
-  integrity sha512-2UseoLWabFNXuk1Foz4VDPSIAkxz+1Hmmq4qijzUmYHDq0ZSloKDLXtGLpQRcAi/M76hRpPtH1rV4BI5jNAOnQ==
+react-docgen@3.0.0-rc.2:
+  version "3.0.0-rc.2"
+  resolved "https://registry.yarnpkg.com/react-docgen/-/react-docgen-3.0.0-rc.2.tgz#5939c64699fd9959da6d97d890f7b648e542dbcc"
+  integrity sha512-tXbIvq7Hxdc92jW570rztqsz0adtWEM5FX8bShJYozT2Y6L/LeHvBMQcED6mSqJ72niiNMPV8fi3S37OHrGMEw==
   dependencies:
     "@babel/parser" "^7.1.3"
     "@babel/runtime" "^7.0.0"
@@ -9920,18 +9925,18 @@ react-docgen@3.0.0:
     node-dir "^0.1.10"
     recast "^0.16.0"
 
-react-docgen@3.0.0-rc.2:
-  version "3.0.0-rc.2"
-  resolved "https://registry.yarnpkg.com/react-docgen/-/react-docgen-3.0.0-rc.2.tgz#5939c64699fd9959da6d97d890f7b648e542dbcc"
-  integrity sha512-tXbIvq7Hxdc92jW570rztqsz0adtWEM5FX8bShJYozT2Y6L/LeHvBMQcED6mSqJ72niiNMPV8fi3S37OHrGMEw==
+react-docgen@4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/react-docgen/-/react-docgen-4.1.1.tgz#8fef0212dbf14733e09edecef1de6b224d87219e"
+  integrity sha512-o1wdswIxbgJRI4pckskE7qumiFyqkbvCO++TylEDOo2RbMiueIOg8YzKU4X9++r0DjrbXePw/LHnh81GRBTWRw==
   dependencies:
-    "@babel/parser" "^7.1.3"
+    "@babel/core" "^7.0.0"
     "@babel/runtime" "^7.0.0"
     async "^2.1.4"
     commander "^2.19.0"
-    doctrine "^2.0.0"
+    doctrine "^3.0.0"
     node-dir "^0.1.10"
-    recast "^0.16.0"
+    recast "^0.17.3"
 
 react-dom@^16.8.3:
   version "16.8.6"
@@ -10253,6 +10258,16 @@ recast@^0.16.0:
     private "~0.1.5"
     source-map "~0.6.1"
 
+recast@^0.17.3:
+  version "0.17.6"
+  resolved "https://registry.yarnpkg.com/recast/-/recast-0.17.6.tgz#64ae98d0d2dfb10ff92ff5fb9ffb7371823b69fa"
+  integrity sha512-yoQRMRrK1lszNtbkGyM4kN45AwylV5hMiuEveUBlxytUViWevjvX6w+tzJt1LH4cfUhWt4NZvy3ThIhu6+m5wQ==
+  dependencies:
+    ast-types "0.12.4"
+    esprima "~4.0.0"
+    private "^0.1.8"
+    source-map "~0.6.1"
+
 recursive-readdir@2.2.2:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/recursive-readdir/-/recursive-readdir-2.2.2.tgz#9946fb3274e1628de6e36b2f6714953b4845094f"