Introducing glamorous πŸ’„

April 4th, 2017 β€” 5 min read

The glamorous logo, shamelessly inspired (with permission) by styled-components
The glamorous logo, shamelessly inspired (with permission) by styled-components
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I was building something for my product at PayPal (blog post maybe forthcoming) and got tired of writing components like this:

const styles = glamor.css({
  fontSize: 20,
  textAlign: 'center',
})
function MyStyledDiv({className = '', ...rest}) {
  return <div className={`${styles} ${className}`} {...rest} />
}

So I decided to try out styled-components because the hype-train was strong πŸš‚. I REALLY liked it:

Kent C. Dodds πŸ’Ώ avatar
Kent C. Dodds πŸ’Ώ @kentcdodds
Ok, I was a styled-components hold-out (I really like JS objects). But I've been trying πŸ’… out for just 30 minutes... And I LOVE IT! πŸ˜πŸ˜πŸ˜πŸ’…πŸ˜πŸ˜πŸ˜

It allowed me to write that same component like this:

const MyStyledDiv = styled.div`
  font-size: 20px;
  text-align: center;
`

Making composable components that carry their styling with them was just superΒ awesome.

Unfortunately, I hit a wall when I realized that there isn't currently a solution for right-to-left conversion (like CSSJanus or rtl-css-js) and that's a hard requirement for what I'm building. I also had some issues with the size of styled-components at the time (note that you can transpile away a lot of the size if you're willing to give up some dynamic capabilities, which I was unwilling to do).

So after evaluating a bunch of other solutions and trying to enhance existing solutions to be what I wanted them to be, I decided to create my own.

Enter glamorous πŸ’„!

paypal/glamorous

glamorous is React component styling solved with an elegant (inspired) API, small footprint (<5kb gzipped), and great performance (via glamor). It has a very similar API to styled-components and uses similar tools under the hood (glamor). The benefits being:

Kent C. Dodds πŸ’Ώ avatar
Kent C. Dodds πŸ’Ώ @kentcdodds
Why? 1. Drop the parser but keep the dynamic abilities 2. Use JavaScript (no editor/linter plugins needed) 3. Use

Let's get a quick look at what a glamorous component looks like:

// Create a <Title> react component that renders an <h1> which is
// centered, palevioletred and sized at 1.5em
const Title = glamorous.h1({
  fontSize: '1.5em',
  textAlign: 'center',
  color: 'palevioletred',
})

// Create a <Wrapper> react component that renders a <section> with
// some padding and a papayawhip background
const Wrapper = glamorous.section({
  padding: '4em',
  background: 'papayawhip',
})

function App() {
  return (
    <Wrapper>
      <Title>Hello World, this is my first glamorous component!</Title>
    </Wrapper>
  )
}

(thanks to styled-components for the example inspiration).

The beauty of glamorous is that all of the cool things you can do with glamor, you can do with glamorous. Here are a few examples:

pseudoclasses

const MyLink = glamorous.a({
  ':hover': {
    color: 'red',
  },
})

child-selectors (the escape hatch you should rarely use, but is nice to have)

const MyDiv = glamorous.div({
  display: 'block',
  '& .bold': {fontWeight: 'bold'},
  '& .one': {color: 'blue'},
  ':hover .two': {color: 'red'},
})

const ui = (
  <MyDiv>
    <div className="one bold">is blue-bold!</div>
    <div className="two">hover red!</div>
  </MyDiv>
)

media queries

const MyResponsiveDiv = glamorous.div({
  width: '100%',
  padding: 20,
  '[@media](http://twitter.com/media "Twitter profile for @media")(min-width: 400px)':
    {
      width: '85%',
      padding: 0,
    },
})

animations

import {css} from 'glamor' // or require or whatever...

const bounce = css.keyframes({
  '0%': {transform: 'scale(1)', opacity: 0.3},
  '55%': {transform: 'scale(1.2)', opacity: 1},
  '100%': {transform: 'scale(1)', opacity: 0.3},
})

const MyBouncyDiv = glamorous.div({
  animation: `${bounce} 1s infinite`,
  width: 50,
  height: 50,
  backgroundColor: 'red',
})

theming

With the new ThemeProvider (recently added by Alessandro Arnodo), glamorous also supports theming:

const Title = glamorous.h1(
  {
    fontSize: '10px',
  },
  (props, theme) => ({
    color: theme.main.color,
  }),
)

// use <ThemeProvider> to pass theme down the tree
const ui1 = (
  <ThemeProvider theme={theme}>
    <Title>Hello!</Title>
  </ThemeProvider>
)

// it is possible to nest themes
// inner themes will be merged with outers
const ui2 = (
  <ThemeProvider theme={theme}>
    <div>
      <Title>Hello!</Title>
      <ThemeProvider theme={secondaryTheme}>
        {/\* this will be blue */}
        <Title>Hello from here!</Title>
      </ThemeProvider>
    </div>
  </ThemeProvider>
)

And if you need global styles, you can just use glamor to do that (you can do this with styled-components as well). And there many other cool things you can do with glamor (including Server Side Rendering)!

Another great feature of glamorous is it will merge glamor class names together automatically for you. Learn more about that here.


In addition to the styled-components inspired API, glamorous exposes a jsxstyle inspired API. Sometimes, you don't want to give something a name because naming things is hard. Especially with this stuff, you wind up with names like Container and Wrapper and who knows which is which!? So, if you find that something doesn't really need a name, then don't give it one!

const {Div, A} = glamorous

function App() {
  return (
    <Div textAlign="center" color="red">
      <A
        href="[https://brave.com/](https://brave.com)"
        textDecoration="none"
        color="darkorange"
        textShadow="1px 1px 2px orange"
      >
        Browse faster and safer with Brave.
      </A>
      <div>It's fast, fun, and safe!</div>
    </Div>
  )
}

(fun tip: this works too: <glamorous.Div>JSX!!</glamorous.Div>)

Oh, and just for fun, all this excitement around CSS Grid got you salivating? It's trivially supported by glamorous:

// Example inspired by
// [http://gridbyexample.com/examples/example12/](http://gridbyexample.com/examples/example12)
const MyGrid = glamorous.div({
  margin: 'auto',
  backgroundColor: '#fff',
  color: '#444',
  // You can use [@supports](http://twitter.com/supports "Twitter profile for @supports") with glamor!
  // So you can use [@supports](http://twitter.com/supports "Twitter profile for @supports") with glamorous as well!
  '[@supports](http://twitter.com/supports "Twitter profile for @supports") (display: grid)':
    {
      display: 'grid',
      gridGap: 10,
      gridTemplateAreas: `  
      "....... header header"  
      "sidebar content content"  
      "footer  footer  footer"  
    `,
    },
})

const Box = glamorous.div({
  backgroundColor: '#444',
  color: '#fff',
  borderRadius: 5,
  padding: 10,
  fontSize: '150%',
})

const HeaderFooter = glamorous(Box)({
  backgroundColor: '#999',
})

function App() {
  return (
    <MyGrid>
      <HeaderFooter css={{gridArea: 'header'}}>Header</HeaderFooter>
      <Box css={{gridArea: 'sidebar'}}>Sidebar</Box>
      <Box css={{gridArea: 'content'}}>
        Content
        <br />
        More content than we had before so this column is now quite tall.
      </Box>
      <HeaderFooter css={{gridArea: 'footer'}}>Footer</HeaderFooter>
    </MyGrid>
  )
}

And you get:

Example inspired by http://gridbyexample.com/examples/example12/

I hope you enjoy glamorous πŸ’„ 🌟 πŸ‘€!

See you around on twitter: @glamorousCSS and @kentcdods

With ❀️ from PayPal (we're hiring!)

Kent C. Dodds
Written by Kent C. Dodds

Kent C. Dodds is a JavaScript software engineer and teacher. He's Co-Founder and Director of Developer Experience at Remix! Kent's taught hundreds of thousands of people how to make the world a better place with quality software development tools and practices. He lives with his wife and four kids in Utah.

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