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function(t,e,r){"use strict";var o=r(439619),n=r(906046),i=r(315646),a=r(741623),s=o("%Map%",!0),l=n("Map.prototype.get",!0),p=n("Map.prototype.set",!0),c=n("Map.prototype.has",!0),u=n("Map.prototype.delete",!0),f=n("Map.prototype.size",!0);t.exports=!!s&&function(){var t,e={assert:function(t){if(!e.has(t))throw new a("Side channel does not contain "+i(t))},delete:function(e){if(t){var r=u(t,e);return 0===f(t)&&(t=void 0),r}return!1},get:function(e){if(t)return l(t,e)},has:function(e){return!!t&&c(t,e)},set:function(e,r){t||(t=new s),p(t,e,r)}};return e}}