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function(e){var t=Object.prototype.hasOwnProperty;function r(e){if(!(this instanceof r))throw TypeError("Constructor PseudoMap requires 'new'");if(this.clear(),e)if(e instanceof r||"function"==typeof Map&&e instanceof Map)e.forEach(function(e,t){this.set(t,e)},this);else if(Array.isArray(e))e.forEach(function(e){this.set(e[0],e[1])},this);else throw TypeError("invalid argument")}function n(e,t){return e===t||e!=e&&t!=t}function i(e,t,r){this.key=e,this.value=t,this._index=r}function o(e,r){for(var i=0,o="_"+r,a=o;t.call(e,a);a=o+i++)if(n(e[a].key,r))return e[a]}e.exports=r,r.prototype.forEach=function(e,t){t=t||this,Object.keys(this._data).forEach(function(r){"size"!==r&&e.call(t,this._data[r].value,this._data[r].key)},this)},r.prototype.has=function(e){return!!o(this._data,e)},r.prototype.get=function(e){var t=o(this._data,e);return t&&t.value},r.prototype.set=function(e,r){!function(e,r,o){for(var a=0,s="_"+r,l=s;t.call(e,l);l=s+a++)if(n(e[l].key,r)){e[l].value=o;return}e.size++,e[l]=new i(r,o,l)}(this._data,e,r)},r.prototype.delete=function(e){var t=o(this._data,e);t&&(delete this._data[t._index],this._data.size--)},r.prototype.clear=function(){var e=Object.create(null);e.size=0,Object.defineProperty(this,"_data",{value:e,enumerable:!1,configurable:!0,writable:!1})},Object.defineProperty(r.prototype,"size",{get:function(){return this._data.size},set:function(e){},enumerable:!0,configurable:!0}),r.prototype.values=r.prototype.keys=r.prototype.entries=function(){throw Error("iterators are not implemented in this version")}}