style-to-css
Version:
Convert a style object to CSS
75 lines (67 loc) • 2.02 kB
JavaScript
/**
* Copyright 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule CSSProperty
*/
// https://raw.githubusercontent.com/facebook/react/3b96650e39ddda5ba49245713ef16dbc52d25e9e/src/renderers/dom/shared/CSSProperty.js
/**
* CSS properties which accept numbers but are not in units of "px".
*/
const isUnitlessNumber = {
animationIterationCount: true,
boxFlex: true,
boxFlexGroup: true,
boxOrdinalGroup: true,
columnCount: true,
flex: true,
flexGrow: true,
flexPositive: true,
flexShrink: true,
flexNegative: true,
flexOrder: true,
gridRow: true,
gridColumn: true,
fontWeight: true,
lineClamp: true,
lineHeight: true,
opacity: true,
order: true,
orphans: true,
tabSize: true,
widows: true,
zIndex: true,
zoom: true,
// SVG-related properties
fillOpacity: true,
stopOpacity: true,
strokeDashoffset: true,
strokeOpacity: true,
strokeWidth: true,
};
/**
* @param {string} prefix vendor-specific prefix, eg: Webkit
* @param {string} key style name, eg: transitionDuration
* @return {string} style name prefixed with `prefix`, properly camelCased, eg:
* WebkitTransitionDuration
*/
function prefixKey(prefix, key) {
return prefix + key.charAt(0).toUpperCase() + key.substring(1);
}
/**
* Support style names that may come passed in prefixed by adding permutations
* of vendor prefixes.
*/
const prefixes = ['Webkit', 'ms', 'Moz', 'O'];
// Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
// infinite loop, because it iterates over the newly added props too.
Object.keys(isUnitlessNumber).forEach(function(prop) {
prefixes.forEach(function(prefix) {
isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
});
});
export default isUnitlessNumber;