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function(t,e,r){"use strict";function n(t,e,r){return e in t?Object.defineProperty(t,e,{value:r,enumerable:!0,configurable:!0,writable:!0}):t[e]=r,t}var i=r(679443),o=r(181038),a=r(797686);t.exports=function(){function t(t){n(this,"_defaultDir",void 0),n(this,"_lastDir",void 0),t?o.isStrong(t)||a(!1):t=o.getGlobalDir(),this._defaultDir=t,this.reset()}var e=t.prototype;return e.reset=function(){this._lastDir=this._defaultDir},e.getDirection=function(t){return this._lastDir=i.getDirection(t,this._lastDir),this._lastDir},t}()}