modernizr/src/prefixes.js

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

define(['ModernizrProto'], function( ModernizrProto ) {
  // List of property values to set for css tests. See ticket #21
  var prefixes = ' -webkit- -moz- -o- -ms- '.split(' ');

  // expose these for the plugin API. Look in the source for how to join() them against your input
  ModernizrProto._prefixes = prefixes;

  return prefixes;
});