fix(getGlamorClassName): don't attempt to merge class names that aren't from glamor

.all-contributorsrc

@@ -605,6 +605,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "mitchellhamilton",
+      "name": "Mitchell Hamilton",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/11481355?v=4",
+      "profile": "https://hamil.town",
+      "contributions": [
+        "code"
+      ]
     }
   ]
 }

README.md

@@ -14,7 +14,7 @@
 [![downloads][downloads-badge]][npmcharts]
 [![MIT License][license-badge]][license]
 
-[![All Contributors](https://img.shields.io/badge/all_contributors-63-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-64-orange.svg?style=flat-square)](#contributors)
 [![PRs Welcome][prs-badge]][prs]
 [![Chat][chat-badge]][chat]
 [![Code of Conduct][coc-badge]][coc]
@@ -174,6 +174,7 @@ Thanks goes to these people ([emoji key][emojis]):
 | [<img src="https://avatars2.githubusercontent.com/u/5257243?v=3" width="100px;"/><br /><sub><b>WillowHQ</b></sub>](https://github.com/WillowHQ)<br />[📖](https://github.com/paypal/glamorous/commits?author=WillowHQ "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/12202757?v=4" width="100px;"/><br /><sub><b>Mohammad Rajabifard</b></sub>](https://tarino.ir)<br />[🐛](https://github.com/paypal/glamorous/issues?q=author%3Amorajabi "Bug reports") [📖](https://github.com/paypal/glamorous/commits?author=morajabi "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/17005317?v=3" width="100px;"/><br /><sub><b>Omar Albacha</b></sub>](https://github.com/Oalbacha)<br />[💻](https://github.com/paypal/glamorous/commits?author=Oalbacha "Code") [📖](https://github.com/paypal/glamorous/commits?author=Oalbacha "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/28659384?v=3" width="100px;"/><br /><sub><b>tdeschryver</b></sub>](https://github.com/tdeschryver)<br />[💻](https://github.com/paypal/glamorous/commits?author=tdeschryver "Code") [⚠️](https://github.com/paypal/glamorous/commits?author=tdeschryver "Tests") | [<img src="https://avatars0.githubusercontent.com/u/4955191?v=4" width="100px;"/><br /><sub><b>Dylan Mozlowski</b></sub>](https://github.com/DylanMoz)<br />[💻](https://github.com/paypal/glamorous/commits?author=DylanMoz "Code") | [<img src="https://avatars2.githubusercontent.com/u/3275424?v=4" width="100px;"/><br /><sub><b>andretshurotshka</b></sub>](https://github.com/goodmind)<br />[💻](https://github.com/paypal/glamorous/commits?author=goodmind "Code") [⚠️](https://github.com/paypal/glamorous/commits?author=goodmind "Tests") | [<img src="https://avatars3.githubusercontent.com/u/12836237?v=4" width="100px;"/><br /><sub><b>Danila</b></sub>](https://github.com/O4epegb)<br />[⚠️](https://github.com/paypal/glamorous/commits?author=O4epegb "Tests") |
 | [<img src="https://avatars3.githubusercontent.com/u/12473268?v=4" width="100px;"/><br /><sub><b>Junyoung Clare Jang</b></sub>](http://ailrun.github.io/)<br />[💻](https://github.com/paypal/glamorous/commits?author=Ailrun "Code") [⚠️](https://github.com/paypal/glamorous/commits?author=Ailrun "Tests") | [<img src="https://avatars2.githubusercontent.com/u/897575?v=4" width="100px;"/><br /><sub><b>Björn Ricks</b></sub>](https://twitter.com/bjoernricks)<br />[🐛](https://github.com/paypal/glamorous/issues?q=author%3Abjoernricks "Bug reports") [💻](https://github.com/paypal/glamorous/commits?author=bjoernricks "Code") [📖](https://github.com/paypal/glamorous/commits?author=bjoernricks "Documentation") [⚠️](https://github.com/paypal/glamorous/commits?author=bjoernricks "Tests") | [<img src="https://avatars0.githubusercontent.com/u/4934193?v=4" width="100px;"/><br /><sub><b>Tyler Deitz</b></sub>](http://tylerdeitz.com)<br />[💻](https://github.com/paypal/glamorous/commits?author=tvler "Code") | [<img src="https://avatars2.githubusercontent.com/u/16104985?v=4" width="100px;"/><br /><sub><b>Shovan Chatterjee</b></sub>](https://twitter.com/shovan_ch)<br />[📖](https://github.com/paypal/glamorous/commits?author=shovanch "Documentation") | [<img src="https://avatars1.githubusercontent.com/u/6839660?v=4" width="100px;"/><br /><sub><b>johnjessewood</b></sub>](https://github.com/johnjesse)<br />[💻](https://github.com/paypal/glamorous/commits?author=johnjesse "Code") | [<img src="https://avatars3.githubusercontent.com/u/856386?v=4" width="100px;"/><br /><sub><b>Daniel</b></sub>](https://www.danielberndt.net)<br />[💻](https://github.com/paypal/glamorous/commits?author=danielberndt "Code") [⚠️](https://github.com/paypal/glamorous/commits?author=danielberndt "Tests") | [<img src="https://avatars0.githubusercontent.com/u/174864?v=4" width="100px;"/><br /><sub><b>Ken Powers</b></sub>](https://knpw.rs)<br />[🤔](#ideas-knpwrs "Ideas, Planning, & Feedback") [💡](#example-knpwrs "Examples") |
 | [<img src="https://avatars1.githubusercontent.com/u/442932?v=4" width="100px;"/><br /><sub><b>John Grishin</b></sub>](http://johngrish.in)<br />[🐛](https://github.com/paypal/glamorous/issues?q=author%3Aexah "Bug reports") [💻](https://github.com/paypal/glamorous/commits?author=exah "Code") [⚠️](https://github.com/paypal/glamorous/commits?author=exah "Tests") | [<img src="https://avatars3.githubusercontent.com/u/200528?v=4" width="100px;"/><br /><sub><b>Mordy Tikotzky</b></sub>](https://github.com/tikotzky)<br />[🐛](https://github.com/paypal/glamorous/issues?q=author%3Atikotzky "Bug reports") [💻](https://github.com/paypal/glamorous/commits?author=tikotzky "Code") | [<img src="https://avatars3.githubusercontent.com/u/1027024?v=4" width="100px;"/><br /><sub><b>Alasdair McLeay</b></sub>](https://github.com/penx)<br />[💡](#example-penx "Examples") | [<img src="https://avatars1.githubusercontent.com/u/4171528?v=4" width="100px;"/><br /><sub><b>Ardamis Yeshak</b></sub>](https://github.com/zabute)<br />[🔧](#tool-zabute "Tools") | [<img src="https://avatars2.githubusercontent.com/u/3729628?v=4" width="100px;"/><br /><sub><b>Matthew Armstrong</b></sub>](https://github.com/raingerber)<br />[⚠️](https://github.com/paypal/glamorous/commits?author=raingerber "Tests") | [<img src="https://avatars3.githubusercontent.com/u/876694?v=4" width="100px;"/><br /><sub><b>Wu Haotian</b></sub>](https://github.com/whtsky)<br />[💻](https://github.com/paypal/glamorous/commits?author=whtsky "Code") [⚠️](https://github.com/paypal/glamorous/commits?author=whtsky "Tests") | [<img src="https://avatars1.githubusercontent.com/u/7829175?v=4" width="100px;"/><br /><sub><b>Viktor Ivarsson</b></sub>](https://github.com/viktorivarsson)<br />[💻](https://github.com/paypal/glamorous/commits?author=viktorivarsson "Code") |
+| [<img src="https://avatars1.githubusercontent.com/u/11481355?v=4" width="100px;"/><br /><sub><b>Mitchell Hamilton</b></sub>](https://hamil.town)<br />[💻](https://github.com/paypal/glamorous/commits?author=mitchellhamilton "Code") |
 
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 

src/__tests__/__snapshots__/index.js.snap

@@ -118,6 +118,17 @@ exports[`can use pre-built glamorous components with css prop 1`] = `
 />
 `;
 
+exports[`does not attempt to merge class names that are not from glamor that begin with css- 1`] = `
+.glamor-0,
+[data-glamor-0] {
+  color: hotpink;
+}
+
+<div
+  class="glamor-0 glamor-1"
+/>
+`;
+
 exports[`forwards props when the GlamorousComponent.rootEl is known 1`] = `
 .glamor-0,
 [data-glamor-0] {

src/__tests__/index.js

@@ -404,3 +404,14 @@ test('should accept user defined contextTypes', () => {
   const props = {theme}
   expect(dynamicStyles).toHaveBeenCalledWith(props, context)
 })
+
+test('does not attempt to merge class names that are not from glamor that begin with css-', () => {
+  const Wrapper = glamorous.div({
+    color: 'hotpink',
+  })
+  const wrapper = render(<Wrapper className="css-something" />)
+
+  expect(wrapper[0].attribs.class).toContain('css-something')
+
+  expect(wrapper).toMatchSnapshot()
+})

src/get-glamor-classname.js

@@ -1,4 +1,4 @@
-import {css} from 'glamor'
+import {css, styleSheet} from 'glamor'
 /**
  * This function takes a className string and gets all the
  * associated glamor styles. It's used to merge glamor styles
@@ -17,11 +17,11 @@ function extractGlamorStyles(className) {
     .toString()
     .split(' ')
     .forEach(name => {
-      if (name.indexOf('css-') === 0) {
+      if (styleSheet.registered[name.substring(4)] === undefined) {
+        glamorlessClassName.push(name)
+      } else {
         const style = buildGlamorSrcFromClassName(name)
         glamorStyles.push(style)
-      } else {
-        glamorlessClassName.push(name)
       }
     })