inline-style-transformer

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Usage

npm install inline-style-transformer --save

Methods

• toCSS
• toObject
• importantify

toCSS(styles [, options])

Takes a styles object and generates a valid CSS string. Property names get converted to dash-case and plain numbers (if they're not unitless properties) get a configurable unit applied.

import { toCSS } from 'inline-style-transformer'
 
const styles = {
    fontSize: 15,
    color: 'red',
    transform: 'rotate(30deg)'
}
 
// basic object to CSS string
const CSS = toCSS(styles)
CSS === 'font-size:15px;color:red;transform:rotate(30deg)'
 
// custom unit transformation
CSS = toCSS(styles, 'em')
CSS === 'font-size:15em;color:red;transform:rotate(30deg)'

Options

unit

default to px

Add a unit which gets added to plain numbers.

toCSS({width: 30}, {unit: 'em'}) === 'width:30em'

ruleSeparator, selectorSeparator & indent

default to '' (empty string)

Used to format the output rules and classes.

const styles = {
  '.class1': {
    fontSize: 30,
    color: 'red'
  }
}
const options = {
  ruleSeparator: '\n',
  selectorSeparator: '\n',
  indent: '  ' // 2 spaces
}
const CSS = toCSS(styles, options)

Will output a formatted CSS string:

.class1 {
  font-size: 30px;
  color: red
}

toObject(CSS [, options])

Converts a CSS string to a optimized javascript object. Property names get camel-cased and number values get converted to pure numbers if possible.

import { toObject } from 'inline-style-transformer'
 
const CSS = 'font-size:15px;color:red;transform:rotate(30deg)'
 
// values with px also get
// converted to pure numbers
const styles = toObject(CSS)
styles === {fontSize: 15, color: 'red', transform: 'rotate(30deg)'}

Advanced

You can also use the new ECMAScript 2015 template strings. This let's you effectively write CSS within javascript.
objectifyCSS will automatically normalize all tabs and line-breaks.

const CSS = `
    font-size: 15px;
    color: red;
    transform: rotate(30deg)
`
 
const styles = toObject(CSS)
styles === {fontSize: 15, color: 'red', transform: 'rotate(30deg)'}

Options

replacer

Optionally you may pass an object containing replacement rules. Those are used to transform multi-selector CSS into an object.

default is {'.' : ''} which replaces the CSS class prefix . with an empty string.

const CSS = `
  .class1 {
      font-size: 15px;
      color: red;
      transform: rotate(30deg)
  }
  .class2 {
    background-color: blue
  }
`
 
const styles = toObject(CSS)
// styles === transformed
const transformed = {
  class1: {
    fontSize: 15,
    color: 'red',
    transform: 'rotate(30deg)'
  },
  class2: {
    backgroundColor: 'blue'
  }
}

License

inline-style-transformer is licensed under the MIT License.
Documentation is licensed under Creative Common License.
Created with ♥ by @rofrischmann.

Contributing

I would love to see people getting involved.
If you have a feature request please create an issue. Also if you're even improving inline-style-transformer by any kind please don't be shy and send a pull request to let everyone benefit.

Issues

If you're having any issue please let me know as fast as possible to find a solution a hopefully fix the issue. Try to add as much information as possible such as your environment, exact case, the line of actions to reproduce the issue.

Pull Requests

If you are creating a pull request, try to use commit messages that are self-explanatory. Also always add some tests unless it's totally senseless (add a reason why it's senseless) and test your code before you commit so Travis won't throw errors.