modernizr/src/omPrefixes.js

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

define(function() {
  // Following spec is to expose vendor-specific style properties as:
  //   elem.style.WebkitBorderRadius
  // and the following would be incorrect:
  //   elem.style.webkitBorderRadius

  // Webkit ghosts their properties in lowercase but Opera & Moz do not.
  // Microsoft uses a lowercase `ms` instead of the correct `Ms` in IE8+
  //   erik.eae.net/archives/2008/03/10/21.48.10/

  // More here: github.com/Modernizr/Modernizr/issues/issue/21
  var omPrefixes = 'Webkit Moz O ms';
  return omPrefixes;
});