chore: Drop prop-types-extra (#275)

package.json

@@ -73,23 +73,22 @@
   "homepage": "https://github.com/4Catalyzer/found#readme",
   "dependencies": {
     "babel-runtime": "^6.26.0",
-    "farce": "^0.2.6",
+    "farce": "^0.2.7",
     "is-promise": "^2.1.0",
     "lodash": "^4.17.11",
     "path-to-regexp": "^1.7.0",
-    "prop-types": "^15.6.2",
-    "prop-types-extra": "^1.1.0",
-    "react-redux": "^6.0.0",
+    "prop-types": "^15.7.2",
+    "react-redux": "^6.0.1",
     "react-static-container": "^1.0.2",
     "redux": "^4.0.1",
-    "warning": "^4.0.2"
+    "warning": "^4.0.3"
   },
   "peerDependencies": {
     "react": ">=16.4.0"
   },
   "devDependencies": {
-    "@types/react": "^16.7.17",
-    "@types/react-dom": "^16.0.11",
+    "@types/react": "^16.8.8",
+    "@types/react-dom": "^16.8.2",
     "babel-cli": "^6.26.0",
     "babel-core": "^6.26.3",
     "babel-eslint": "^10.0.1",
@@ -100,31 +99,31 @@
     "babel-preset-env": "^1.7.0",
     "babel-preset-react": "^6.24.1",
     "babel-preset-stage-1": "^6.24.1",
-    "codecov": "^3.1.0",
+    "codecov": "^3.2.0",
     "cpy-cli": "^2.0.0",
     "delay": "^4.1.0",
     "doctoc": "^1.4.0",
-    "dtslint": "^0.5.0",
-    "enzyme": "^3.8.0",
-    "enzyme-adapter-react-16": "^1.7.1",
-    "eslint": "^5.10.0",
+    "dtslint": "^0.5.5",
+    "enzyme": "^3.9.0",
+    "enzyme-adapter-react-16": "^1.11.2",
+    "eslint": "^5.15.2",
     "eslint-config-4catalyzer-react": "^0.9.0",
-    "eslint-config-prettier": "^4.0.0",
-    "eslint-plugin-import": "^2.14.0",
-    "eslint-plugin-jsx-a11y": "^6.1.2",
-    "eslint-plugin-prettier": "^3.0.0",
-    "eslint-plugin-react": "^7.11.1",
-    "husky": "^1.2.1",
+    "eslint-config-prettier": "^4.1.0",
+    "eslint-plugin-import": "^2.16.0",
+    "eslint-plugin-jsx-a11y": "^6.2.1",
+    "eslint-plugin-prettier": "^3.0.1",
+    "eslint-plugin-react": "^7.12.4",
+    "husky": "^1.3.1",
     "jest": "^23.6.0",
-    "lint-staged": "^8.1.0",
+    "lint-staged": "^8.1.5",
     "p-defer": "^2.0.0",
-    "prettier": "^1.15.3",
-    "react": "^16.6.3",
-    "react-dom": "^16.6.3",
+    "prettier": "^1.16.4",
+    "react": "^16.8.4",
+    "react-dom": "^16.8.4",
     "react-proxy": "^3.0.0-alpha.1",
     "react-stand-in": "^4.0.0-beta.14",
-    "react-test-renderer": "^16.6.3",
-    "rimraf": "^2.6.2",
-    "typescript": "^3.2.2"
+    "react-test-renderer": "^16.8.4",
+    "rimraf": "^2.6.3",
+    "typescript": "^3.3.3333"
   }
 }

src/BaseLink.js

@@ -1,12 +1,11 @@
 import PropTypes from 'prop-types';
-import elementType from 'prop-types-extra/lib/elementType';
 import React from 'react';
 import warning from 'warning';
 
 import { routerShape } from './PropTypes';
 
 const propTypes = {
-  Component: elementType,
+  Component: PropTypes.elementType,
   to: PropTypes.oneOfType([PropTypes.string, PropTypes.object]).isRequired,
   match: PropTypes.object.isRequired,
   activeClassName: PropTypes.string,