feat(events): implement focusin/focusout events. (#182)

* Add focusin/focusout events.

* Add self to contributors.

Author: sarenji

.all-contributorsrc

@@ -449,6 +449,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "sarenji",
+      "name": "David Peter",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/167743?v=4",
+      "profile": "http://davidpeter.me",
+      "contributions": [
+        "code"
+      ]
     }
   ]
 }

README.md

@@ -17,7 +17,7 @@
 [![downloads][downloads-badge]][npmtrends]
 [![MIT License][license-badge]][license]
 
-[![All Contributors](https://img.shields.io/badge/all_contributors-45-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-46-orange.svg?style=flat-square)](#contributors)
 [![PRs Welcome][prs-badge]][prs]
 [![Code of Conduct][coc-badge]][coc]
 
@@ -1176,7 +1176,7 @@ Thanks goes to these people ([emoji key][emojis]):
 | [<img src="https://avatars2.githubusercontent.com/u/21689428?v=4" width="100px;"/><br /><sub><b>Jonathan Stoye</b></sub>](http://jonathanstoye.de)<br />[📖](https://github.com/kentcdodds/dom-testing-library/commits?author=JonathanStoye "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/4126644?v=4" width="100px;"/><br /><sub><b>Sanghyeon Lee</b></sub>](https://github.com/yongdamsh)<br />[💡](#example-yongdamsh "Examples") | [<img src="https://avatars3.githubusercontent.com/u/8015514?v=4" width="100px;"/><br /><sub><b>Justice Mba </b></sub>](https://github.com/Dajust)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=Dajust "Code") [📖](https://github.com/kentcdodds/dom-testing-library/commits?author=Dajust "Documentation") [🤔](#ideas-Dajust "Ideas, Planning, & Feedback") | [<img src="https://avatars3.githubusercontent.com/u/340761?v=4" width="100px;"/><br /><sub><b>Wayne Crouch</b></sub>](https://github.com/wgcrouch)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=wgcrouch "Code") | [<img src="https://avatars1.githubusercontent.com/u/4996462?v=4" width="100px;"/><br /><sub><b>Ben Elliott</b></sub>](http://benjaminelliott.co.uk)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=benelliott "Code") | [<img src="https://avatars3.githubusercontent.com/u/577921?v=4" width="100px;"/><br /><sub><b>Ruben Costa</b></sub>](http://nuances.co)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=rubencosta "Code") | [<img src="https://avatars2.githubusercontent.com/u/4982001?v=4" width="100px;"/><br /><sub><b>Robert Smith</b></sub>](http://rbrtsmith.com/)<br />[🐛](https://github.com/kentcdodds/dom-testing-library/issues?q=author%3Arbrtsmith "Bug reports") [🤔](#ideas-rbrtsmith "Ideas, Planning, & Feedback") [📖](https://github.com/kentcdodds/dom-testing-library/commits?author=rbrtsmith "Documentation") |
 | [<img src="https://avatars3.githubusercontent.com/u/881986?v=4" width="100px;"/><br /><sub><b>dadamssg</b></sub>](https://github.com/dadamssg)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=dadamssg "Code") | [<img src="https://avatars1.githubusercontent.com/u/186971?v=4" width="100px;"/><br /><sub><b>Neil Kistner</b></sub>](https://neilkistner.com/)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=wyze "Code") | [<img src="https://avatars3.githubusercontent.com/u/1448597?v=4" width="100px;"/><br /><sub><b>Ben Chauvette</b></sub>](http://bdchauvette.net/)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=bdchauvette "Code") | [<img src="https://avatars2.githubusercontent.com/u/777527?v=4" width="100px;"/><br /><sub><b>Jeff Baumgardt</b></sub>](https://github.com/JeffBaumgardt)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=JeffBaumgardt "Code") [📖](https://github.com/kentcdodds/dom-testing-library/commits?author=JeffBaumgardt "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/4658208?v=4" width="100px;"/><br /><sub><b>Matan Kushner</b></sub>](http://matchai.me)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=matchai "Code") [📖](https://github.com/kentcdodds/dom-testing-library/commits?author=matchai "Documentation") [🤔](#ideas-matchai "Ideas, Planning, & Feedback") [⚠️](https://github.com/kentcdodds/dom-testing-library/commits?author=matchai "Tests") | [<img src="https://avatars2.githubusercontent.com/u/5779538?v=4" width="100px;"/><br /><sub><b>Alex Wendte</b></sub>](http://www.wendtedesigns.com/)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=themostcolm "Code") [📖](https://github.com/kentcdodds/dom-testing-library/commits?author=themostcolm "Documentation") [⚠️](https://github.com/kentcdodds/dom-testing-library/commits?author=themostcolm "Tests") | [<img src="https://avatars0.githubusercontent.com/u/2196208?v=4" width="100px;"/><br /><sub><b>Tamas Fodor</b></sub>](https://github.com/ruffle1986)<br />[📖](https://github.com/kentcdodds/dom-testing-library/commits?author=ruffle1986 "Documentation") |
 | [<img src="https://avatars3.githubusercontent.com/u/14793495?v=4" width="100px;"/><br /><sub><b>Benjamin Eckardt</b></sub>](https://github.com/BenjaminEckardt)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=BenjaminEckardt "Code") | [<img src="https://avatars3.githubusercontent.com/u/205752?v=4" width="100px;"/><br /><sub><b>Ryan Campbell</b></sub>](https://github.com/campbellr)<br />[📖](https://github.com/kentcdodds/dom-testing-library/commits?author=campbellr "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/1335519?v=4" width="100px;"/><br /><sub><b>Taylor Briggs</b></sub>](https://taylor-briggs.com)<br />[⚠️](https://github.com/kentcdodds/dom-testing-library/commits?author=TaylorBriggs "Tests") | [<img src="https://avatars2.githubusercontent.com/u/132233?v=4" width="100px;"/><br /><sub><b>John Gozde</b></sub>](https://github.com/jgoz)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=jgoz "Code") | [<img src="https://avatars2.githubusercontent.com/u/3382565?v=4" width="100px;"/><br /><sub><b>C. T. Lin</b></sub>](https://github.com/chentsulin)<br />[📖](https://github.com/kentcdodds/dom-testing-library/commits?author=chentsulin "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/5312329?v=4" width="100px;"/><br /><sub><b>Terrence Wong</b></sub>](http://terrencewwong.com)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=terrencewwong "Code") | [<img src="https://avatars0.githubusercontent.com/u/12230408?v=4" width="100px;"/><br /><sub><b>Soo Jae Hwang</b></sub>](https://www.ossfinder.com)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=misoguy "Code") |
-| [<img src="https://avatars0.githubusercontent.com/u/19773?v=4" width="100px;"/><br /><sub><b>Royston Shufflebotham</b></sub>](https://github.com/RoystonS)<br />[🐛](https://github.com/kentcdodds/dom-testing-library/issues?q=author%3ARoystonS "Bug reports") [💻](https://github.com/kentcdodds/dom-testing-library/commits?author=RoystonS "Code") [📖](https://github.com/kentcdodds/dom-testing-library/commits?author=RoystonS "Documentation") [⚠️](https://github.com/kentcdodds/dom-testing-library/commits?author=RoystonS "Tests") | [<img src="https://avatars0.githubusercontent.com/u/591673?v=4" width="100px;"/><br /><sub><b>Vadim Brodsky</b></sub>](http://www.vadimbrodsky.com)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=VadimBrodsky "Code") | [<img src="https://avatars3.githubusercontent.com/u/499898?v=4" width="100px;"/><br /><sub><b>Eunjae Lee</b></sub>](https://twitter.com/eunjae_lee)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=eunjae-lee "Code") |
+| [<img src="https://avatars0.githubusercontent.com/u/19773?v=4" width="100px;"/><br /><sub><b>Royston Shufflebotham</b></sub>](https://github.com/RoystonS)<br />[🐛](https://github.com/kentcdodds/dom-testing-library/issues?q=author%3ARoystonS "Bug reports") [💻](https://github.com/kentcdodds/dom-testing-library/commits?author=RoystonS "Code") [📖](https://github.com/kentcdodds/dom-testing-library/commits?author=RoystonS "Documentation") [⚠️](https://github.com/kentcdodds/dom-testing-library/commits?author=RoystonS "Tests") | [<img src="https://avatars0.githubusercontent.com/u/591673?v=4" width="100px;"/><br /><sub><b>Vadim Brodsky</b></sub>](http://www.vadimbrodsky.com)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=VadimBrodsky "Code") | [<img src="https://avatars3.githubusercontent.com/u/499898?v=4" width="100px;"/><br /><sub><b>Eunjae Lee</b></sub>](https://twitter.com/eunjae_lee)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=eunjae-lee "Code") | [<img src="https://avatars2.githubusercontent.com/u/167743?v=4" width="100px;"/><br /><sub><b>David Peter</b></sub>](http://davidpeter.me)<br />[💻](https://github.com/kentcdodds/dom-testing-library/commits?author=sarenji "Code") |
 
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 

src/__tests__/events.js

@@ -20,7 +20,7 @@ const eventTypes = [
   },
   {
     type: 'Focus',
-    events: ['focus', 'blur'],
+    events: ['focus', 'blur', 'focusIn', 'focusOut'],
     elementType: 'input',
   },
   {

src/events.js

@@ -47,6 +47,14 @@ const eventMap = {
     EventType: 'FocusEvent',
     defaultInit: {bubbles: false, cancelable: false},
   },
+  focusIn: {
+    EventType: 'FocusEvent',
+    defaultInit: {bubbles: true, cancelable: false},
+  },
+  focusOut: {
+    EventType: 'FocusEvent',
+    defaultInit: {bubbles: true, cancelable: false},
+  },
   // Form Events
   change: {
     EventType: 'InputEvent',