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t=this._front,n=this[t];return this[t]=void 0,this._front=t+1&this._capacity-1,this._length=e-1,n}},r.prototype.unshift=function(e){var t=this._length,n=arguments.length;if(1<n){if((i=this._capacity)<t+n){for(var r=n-1;0<=r;r--){this._checkCapacity(t+1);var i=this._capacity;this[a=(this._front-1&i-1^i)-i]=arguments[r],t++,this._length=t,this._front=a}return t}var o=this._front;for(r=n-1;0<=r;r--){var a;this[a=(o-1&i-1^i)-i]=arguments[r],o=a}return this._front=o,this._length=t+n,t+n}if(0===n)return t;this._checkCapacity(t+1);i=this._capacity;return this[r=(this._front-1&i-1^i)-i]=e,this._length=t+1,this._front=r,t+1},r.prototype.peekBack=function(){var e=this._length;if(0!==e)return this[this._front+e-1&this._capacity-1]},r.prototype.peekFront=function(){if(0!==this._length)return this[this._front]},r.prototype.get=function(e){var t=e;if(t===(0|t)){var n=this._length;if(t<0&&(t+=n),!(t<0||n<=t))return this[this._front+t&this._capacity-1]}},r.prototype.isEmpty=function(){return 0===this._length},r.prototype.clear=function(){for(var e=this._length,t=this._front,n=this._capacity,r=0;r<e;++r)this[t+r&n-1]=void 0;this._length=0,this._front=0},r.prototype.valueOf=r.prototype.toString=function(){return this.toArray().toString()},r.prototype.removeFront=r.prototype.shift,r.prototype.removeBack=r.prototype.pop,r.prototype.insertFront=r.prototype.unshift,r.prototype.insertBack=r.prototype.push,r.prototype.enqueue=r.prototype.push,r.prototype.dequeue=r.prototype.shift,r.prototype.toJSON=r.prototype.toArray,Object.defineProperty(r.prototype,"length",{get:function(){return this._length},set:function(){throw new RangeError("")}}),r.prototype._checkCapacity=function(e){this._capacity<e&&this._resizeTo(o(1.5*this._capacity+16))},r.prototype._resizeTo=function(e){var t=this._capacity;this._capacity=e;var n=this._front,r=this._length;t<n+r&&function(e,t,n,r,i){for(var o=0;o<i;++o)n[o+r]=e[o+t],e[o+t]=void 0}(this,0,this,t,n+r&t-1)};var i=Array.isArray;function o(e){if("number"!=typeof e){if(!i(e))return 16;e=e.length}return t=Math.min(Math.max(16,e),1073741824),t>>>=0,t-=1,t|=t>>1,t|=t>>2,t|=t>>4,t|=t>>8,1+(t|=t>>16);var t}t.exports=r},{}],16:[function(e,t,n){var r=e(61);function s(e,t,n){t&&"string"!=typeof t&&(t=t.message||t.name),r(this,{type:e,name:e,cause:"string"!=typeof t?t:n,message:t},"ewr")}function u(e,t){Error.call(this),Error.captureStackTrace&&Error.captureStackTrace(this,this.constructor),s.call(this,"CustomError",e,t)}u.prototype=new Error,t.exports=function(a){var e=function(e,t){return n=a,r=e,(o=function(e,t){s.call(this,r,e,t),"FilesystemError"==r&&(this.code=this.cause.code,this.path=this.cause.path,this.errno=this.cause.errno,this.message=(n.errno[this.cause.errno]?n.errno[this.cause.errno].description:this.cause.message)+(this.cause.path?" 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descriptor"},{errno:10,code:"EBUSY",description:"resource busy or locked"},{errno:11,code:"ECONNABORTED",description:"software caused connection abort"},{errno:12,code:"ECONNREFUSED",description:"connection refused"},{errno:13,code:"ECONNRESET",description:"connection reset by peer"},{errno:14,code:"EDESTADDRREQ",description:"destination address required"},{errno:15,code:"EFAULT",description:"bad address in system call argument"},{errno:16,code:"EHOSTUNREACH",description:"host is unreachable"},{errno:17,code:"EINTR",description:"interrupted system call"},{errno:18,code:"EINVAL",description:"invalid argument"},{errno:19,code:"EISCONN",description:"socket is already connected"},{errno:20,code:"EMFILE",description:"too many open files"},{errno:21,code:"EMSGSIZE",description:"message too long"},{errno:22,code:"ENETDOWN",description:"network is down"},{errno:23,code:"ENETUNREACH",description:"network is unreachable"},{errno:24,code:"ENFILE",description:"file table overflow"},{errno:25,code:"ENOBUFS",description:"no buffer space available"},{errno:26,code:"ENOMEM",description:"not enough memory"},{errno:27,code:"ENOTDIR",description:"not a directory"},{errno:28,code:"EISDIR",description:"illegal operation on a directory"},{errno:29,code:"ENONET",description:"machine is not on the network"},{errno:31,code:"ENOTCONN",description:"socket is not connected"},{errno:32,code:"ENOTSOCK",description:"socket operation on non-socket"},{errno:33,code:"ENOTSUP",description:"operation not supported on socket"},{errno:34,code:"ENOENT",description:"no such file or directory"},{errno:35,code:"ENOSYS",description:"function not implemented"},{errno:36,code:"EPIPE",description:"broken pipe"},{errno:37,code:"EPROTO",description:"protocol error"},{errno:38,code:"EPROTONOSUPPORT",description:"protocol not supported"},{errno:39,code:"EPROTOTYPE",description:"protocol wrong type for socket"},{errno:40,code:"ETIMEDOUT",description:"connection timed out"},{errno:41,code:"ECHARSET",description:"invalid Unicode character"},{errno:42,code:"EAIFAMNOSUPPORT",description:"address family for hostname not supported"},{errno:44,code:"EAISERVICE",description:"servname not supported for ai_socktype"},{errno:45,code:"EAISOCKTYPE",description:"ai_socktype not supported"},{errno:46,code:"ESHUTDOWN",description:"cannot send after transport endpoint shutdown"},{errno:47,code:"EEXIST",description:"file already exists"},{errno:48,code:"ESRCH",description:"no such process"},{errno:49,code:"ENAMETOOLONG",description:"name too long"},{errno:50,code:"EPERM",description:"operation not permitted"},{errno:51,code:"ELOOP",description:"too many symbolic links encountered"},{errno:52,code:"EXDEV",description:"cross-device link not permitted"},{errno:53,code:"ENOTEMPTY",description:"directory not empty"},{errno:54,code:"ENOSPC",description:"no space left on device"},{errno:55,code:"EIO",description:"i/o error"},{errno:56,code:"EROFS",description:"read-only 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