Comparing version
77
index.js
@@ -0,74 +1,5 @@ | ||
function identity(x) { return x; } | ||
var style = document.createElement('p').style | ||
var prefixes = 'O ms Moz Webkit'.split(' ') | ||
var upper = /([A-Z])/g | ||
var memo = {} | ||
/** | ||
* memoized `prefix` | ||
* | ||
* @param {String} key | ||
* @return {String} | ||
* @api public | ||
*/ | ||
module.exports = exports = function(key){ | ||
return key in memo | ||
? memo[key] | ||
: memo[key] = prefix(key) | ||
} | ||
exports.prefix = prefix | ||
exports.dash = dashedPrefix | ||
/** | ||
* prefix `key` | ||
* | ||
* prefix('transform') // => WebkitTransform | ||
* | ||
* @param {String} key | ||
* @return {String} | ||
* @api public | ||
*/ | ||
function prefix(key){ | ||
// camel case | ||
key = key.replace(/-([a-z])/g, function(_, char){ | ||
return char.toUpperCase() | ||
}) | ||
// without prefix | ||
if (style[key] !== undefined) return key | ||
// with prefix | ||
var Key = capitalize(key) | ||
var i = prefixes.length | ||
while (i--) { | ||
var name = prefixes[i] + Key | ||
if (style[name] !== undefined) return name | ||
} | ||
throw new Error('unable to prefix ' + key) | ||
} | ||
function capitalize(str){ | ||
return str.charAt(0).toUpperCase() + str.slice(1) | ||
} | ||
/** | ||
* create a dasherized prefix | ||
* | ||
* @param {String} key | ||
* @return {String} | ||
* @api public | ||
*/ | ||
function dashedPrefix(key){ | ||
key = prefix(key) | ||
if (upper.test(key)) { | ||
key = '-' + key.replace(upper, '-$1') | ||
upper.lastIndex = 0 // fix #1 | ||
} | ||
return key.toLowerCase() | ||
} | ||
module.exports = identity; | ||
module.exports.dash = identity; | ||
module.exports.dash = identity; |
{ | ||
"name": "prefix", | ||
"version": "0.2.3", | ||
"version": "0.2.4", | ||
"description": "prefix a css attribute", | ||
@@ -11,2 +11,4 @@ "dependencies": {}, | ||
"repository": "git://github.com/jkroso/prefix.git", | ||
"main": "index.js", | ||
"browser": "browser.js", | ||
"keywords": ["prefix"], | ||
@@ -13,0 +15,0 @@ "author": "Jake Rosoman", |
Trivial Package
Supply chain riskPackages less than 10 lines of code are easily copied into your own project and may not warrant the additional supply chain risk of an external dependency.
Found 1 instance in 1 package
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