Function isPresto

docs/lib/react.js:76–79

* Opera <= 12 includes TextEvent in window, but does not fire * text input events. Rely on keypress instead.

()

 * text input events. Rely on keypress instead.
 */
function isPresto() {
  var opera = window.opera;
  return typeof opera === 'object' && typeof opera.version === 'function' && parseInt(opera.version(), 10) <= 12;
}

var SPACEBAR_CODE = 32;
var SPACEBAR_CHAR = String.fromCharCode(SPACEBAR_CODE);