to-style/src/toStyleString.js

Convert style objects to style strings

'use strict'

var toStyleObject = require('./toStyleObject')
var hasOwn        = require('./hasOwn')

/**
 * @ignore
 * @method toStyleString
 *
 * @param  {Object} styles The object to convert to a style string.
 * @param  {Object} config
 * @param  {Boolean} config.addUnits=true True if you want to add units when numerical values are encountered. Defaults to true
 * @param  {Object}  config.cssUnitless An object whose keys represent css numerical property names that will not be appended with units.
 * @param  {Object}  config.prefixProperties An object whose keys represent css property names that should be prefixed
 * @param  {String}  config.cssUnit='px' The css unit to append to numerical values. Defaults to 'px'
 * @param  {String}  config.scope
 *
 * @return {Object} The object, normalized with css style names
 */
module.exports = function(styles, config){
    styles = toStyleObject(styles, config)

    var result = []
    var prop

    for(prop in styles) if (hasOwn(styles, prop)){
        result.push(prop + ': ' + styles[prop])
    }

    return result.join('; ')
}