Use ‘prop-types’ package for compatibility with React ^15.5

Author: Clauderic Demers

package.json

@@ -19,7 +19,9 @@
     "test:watch": "jest --watch",
     "test:ci": "jest && codecov"
   },
-  "dependencies": {},
+  "dependencies": {
+    "prop-types": "^15.5.7"
+  },
   "peerDependencies": {
     "react": "15.x || 16.x"
   },

src/index.js

@@ -1,4 +1,5 @@
-import React, {PureComponent, PropTypes} from 'react';
+import React, {PureComponent} from 'react';
+import PropTypes from 'prop-types';
 import SizeAndPositionManager from './SizeAndPositionManager';
 import {
   ALIGN_CENTER,

yarn.lock

@@ -2639,7 +2639,7 @@ fb-watchman@^2.0.0:
   dependencies:
     bser "^2.0.0"
 
-fbjs@^0.8.1, fbjs@^0.8.4:
+fbjs@^0.8.1, fbjs@^0.8.4, fbjs@^0.8.9:
   version "0.8.9"
   resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.9.tgz#180247fbd347dcc9004517b904f865400a0c8f14"
   dependencies:
@@ -5267,6 +5267,12 @@ [email protected], promise@^7.1.1:
   dependencies:
     asap "~2.0.3"
 
+prop-types@^15.5.7:
+  version "15.5.7"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.5.7.tgz#231c4f29cdd82e355011d4889386ca9059544dd1"
+  dependencies:
+    fbjs "^0.8.9"
+
 proxy-addr@~1.1.2:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-1.1.3.tgz#dc97502f5722e888467b3fa2297a7b1ff47df074"