fix: proptypes has its own package

Author: fernandopasik

package.json

@@ -41,6 +41,7 @@
     "eslint-plugin-jsx-a11y": "^6.2.1",
     "eslint-plugin-react": "^7.12.4",
     "jest": "^24.1.0",
+    "prop-types": "^15.7.2",
     "react": "^16.8.3",
     "watch": "^1.0.2"
   },

test/examples/button.js

@@ -1,4 +1,5 @@
-import React, { PropTypes } from 'react';
+import React from 'react';
+import PropTypes from 'prop-types';
 
 /**
  * Button

test/examples/hello-world.js

@@ -1,4 +1,5 @@
-import React, { PropTypes } from 'react';
+import React from 'react';
+import PropTypes from 'prop-types';
 
 /**
  * Says hello to who

yarn.lock

@@ -3064,7 +3064,7 @@ prompts@^2.0.1:
     kleur "^3.0.2"
     sisteransi "^1.0.0"
 
-prop-types@^15.6.2:
+prop-types@^15.6.2, prop-types@^15.7.2:
   version "15.7.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
   integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==