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function(e,t,r){var n=r(868361),o=r(63996),a=r(573750),c=a.isPlatform("Mac OS X"),s=c&&a.isBrowser("Firefox < 29"),u=n.hasCommandModifier,l=n.isCtrlKeyCommand;function f(e){return c&&e.altKey||l(e)}e.exports=function(e){switch(e.keyCode){case 66:return u(e)?"bold":null;case 68:return l(e)?"delete":null;case 72:return l(e)?"backspace":null;case 73:return u(e)?"italic":null;case 74:return u(e)?"code":null;case 75:return c&&l(e)?"secondary-cut":null;case 77:case 79:return l(e)?"split-block":null;case 84:return c&&l(e)?"transpose-characters":null;case 85:return u(e)?"underline":null;case 87:return c&&l(e)?"backspace-word":null;case 89:if(l(e))return c?"secondary-paste":"redo";return null;case 90:return(u(e)?e.shiftKey?"redo":"undo":null)||null;case o.RETURN:return"split-block";case o.DELETE:return!c&&e.shiftKey?null:f(e)?"delete-word":"delete";case o.BACKSPACE:return u(e)&&c?"backspace-to-start-of-line":f(e)?"backspace-word":"backspace";case o.LEFT:return s&&u(e)?"move-selection-to-start-of-block":null;case o.RIGHT:return s&&u(e)?"move-selection-to-end-of-block":null;default:return null}}}