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t(o);this.startLoop(t)})}dataMessage(){if(this._fin){let e=this._messageLength,t=this._fragments;if(this._totalPayloadLength=0,this._messageLength=0,this._fragmented=0,this._fragments=[],this._opcode===2){let r;this._binaryType==="nodebuffer"?r=br(t,e):this._binaryType==="arraybuffer"?r=Du(br(t,e)):r=t,this.emit("message",r)}else{let r=br(t,e);if(!Zs(r))return this._loop=!1,Y(Error,"invalid UTF-8 sequence",!0,1007,"WS_ERR_INVALID_UTF8");this.emit("message",r.toString())}}this._state=Tt}controlMessage(e){if(this._opcode===8)if(this._loop=!1,e.length===0)this.emit("conclude",1005,""),this.end();else{if(e.length===1)return Y(RangeError,"invalid payload length 1",!0,1002,"WS_ERR_INVALID_CONTROL_PAYLOAD_LENGTH");{let t=e.readUInt16BE(0);if(!Iu(t))return Y(RangeError,`invalid status code ${t}`,!0,1002,"WS_ERR_INVALID_CLOSE_CODE");let r=e.slice(2);if(!Zs(r))return Y(Error,"invalid UTF-8 sequence",!0,1007,"WS_ERR_INVALID_UTF8");this.emit("conclude",t,r.toString()),this.end()}}else this._opcode===9?this.emit("ping",e):this.emit("pong",e);this._state=Tt}};no.exports=Er;function Y(n,e,t,r,i){let s=new n(t?`Invalid WebSocket frame: ${e}`:e);return Error.captureStackTrace(s,Y),s.code=i,s[Ru]=r,s}});var Rr=R((uf,so)=>{"use strict";var af=require("net"),cf=require("tls"),{randomFillSync:Tu}=require("crypto"),ro=kt(),{EMPTY_BUFFER:ju}=st(),{isValidStatusCode:qu}=Sr(),{mask:io,toBuffer:Fe}=Dt(),ot=Buffer.alloc(4),Mr=class n{constructor(e,t){this._extensions=t||{},this._socket=e,this._firstFragment=!0,this._compress=!1,this._bufferedBytes=0,this._deflating=!1,this._queue=[]}static frame(e,t){let r=t.mask&&t.readOnly,i=t.mask?6:2,s=e.length;e.length>=65536?(i+=8,s=127):e.length>125&&(i+=2,s=126);let o=Buffer.allocUnsafe(r?e.length+i:i);return 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ao=R((lf,oo)=>{"use strict";var _t=class{constructor(e,t){this.target=t,this.type=e}},xr=class extends _t{constructor(e,t){super("message",t),this.data=e}},Dr=class extends _t{constructor(e,t,r){super("close",r),this.wasClean=r._closeFrameReceived&&r._closeFrameSent,this.reason=t,this.code=e}},Pr=class extends _t{constructor(e){super("open",e)}},Ir=class extends _t{constructor(e,t){super("error",t),this.message=e.message,this.error=e}},Uu={addEventListener(n,e,t){if(typeof e!="function")return;function r(c){e.call(this,new xr(c,this))}function i(c,u){e.call(this,new Dr(c,u,this))}function s(c){e.call(this,new Ir(c,this))}function o(){e.call(this,new Pr(this))}let a=t&&t.once?"once":"on";n==="message"?(r._listener=e,this[a](n,r)):n==="close"?(i._listener=e,this[a](n,i)):n==="error"?(s._listener=e,this[a](n,s)):n==="open"?(o._listener=e,this[a](n,o)):this[a](n,e)},removeEventListener(n,e){let t=this.listeners(n);for(let 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Au=require("events"),Bu=require("https"),Fu=require("http"),ho=require("net"),Ku=require("tls"),{randomBytes:Vu,createHash:Wu}=require("crypto"),{Readable:df}=require("stream"),{URL:Tr}=require("url"),ze=kt(),$u=Or(),Gu=Rr(),{BINARY_TYPES:uo,EMPTY_BUFFER:jr,GUID:Hu,kStatusCode:zu,kWebSocket:se,NOOP:fo}=st(),{addEventListener:Ju,removeEventListener:Yu}=ao(),{format:Xu,parse:Zu}=kr(),{toBuffer:Qu}=Dt(),Ke=["CONNECTING","OPEN","CLOSING","CLOSED"],qr=[8,13],el=30*1e3,z=class n extends Au{constructor(e,t,r){super(),this._binaryType=uo[0],this._closeCode=1006,this._closeFrameReceived=!1,this._closeFrameSent=!1,this._closeMessage="",this._closeTimer=null,this._extensions={},this._protocol="",this._readyState=n.CONNECTING,this._receiver=null,this._sender=null,this._socket=null,e!==null?(this._bufferedAmount=0,this._isServer=!1,this._redirects=0,Array.isArray(t)?t=t.join(", "):typeof t=="object"&&t!==null&&(r=t,t=void 0),_o(this,e,t,r)):this._isServer=!0}get binaryType(){return this._binaryType}set binaryType(e){uo.includes(e)&&(this._binaryType=e,this._receiver&&(this._receiver._binaryType=e))}get bufferedAmount(){return this._socket?this._socket._writableState.length+this._sender._bufferedBytes:this._bufferedAmount}get extensions(){return Object.keys(this._extensions).join()}get onclose(){}set onclose(e){}get onerror(){}set onerror(e){}get onopen(){}set onopen(e){}get onmessage(){}set onmessage(e){}get protocol(){return this._protocol}get readyState(){return this._readyState}get url(){return this._url}setSocket(e,t,r){let i=new $u(this.binaryType,this._extensions,this._isServer,r);this._sender=new 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n=this[se];this.removeListener("error",vo),this.on("error",fo),n&&(n._readyState=z.CLOSING,this.destroy())}});var Co=R((_f,bo)=>{"use strict";var{Duplex:ul}=require("stream");function wo(n){n.emit("close")}function ll(){!this.destroyed&&this._writableState.finished&&this.destroy()}function So(n){this.removeListener("error",So),this.destroy(),this.listenerCount("error")===0&&this.emit("error",n)}function hl(n,e){let t=!0,r=!0;function i(){t&&n._socket.resume()}n.readyState===n.CONNECTING?n.once("open",function(){n._receiver.removeAllListeners("drain"),n._receiver.on("drain",i)}):(n._receiver.removeAllListeners("drain"),n._receiver.on("drain",i));let s=new ul({...e,autoDestroy:!1,emitClose:!1,objectMode:!1,writableObjectMode:!1});return 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dl=require("events"),ln=require("http"),pf=require("https"),gf=require("net"),mf=require("tls"),{createHash:fl}=require("crypto"),at=kt(),_l=Lr(),{format:pl,parse:gl}=kr(),{GUID:ml,kWebSocket:vl}=st(),yl=/^[+/0-9A-Za-z]{22}==$/,Eo=0,Oo=1,Mo=2,Br=class extends dl{constructor(e,t){if(super(),e={maxPayload:100*1024*1024,perMessageDeflate:!1,handleProtocols:null,clientTracking:!0,verifyClient:null,noServer:!1,backlog:null,server:null,host:null,path:null,port:null,...e},e.port==null&&!e.server&&!e.noServer||e.port!=null&&(e.server||e.noServer)||e.server&&e.noServer)throw new TypeError('One and only one of the "port", "server", or "noServer" options must be specified');if(e.port!=null?(this._server=ln.createServer((r,i)=>{let s=ln.STATUS_CODES[426];i.writeHead(426,{"Content-Length":s.length,"Content-Type":"text/plain"}),i.end(s)}),this._server.listen(e.port,e.host,e.backlog,t)):e.server&&(this._server=e.server),this._server){let r=this.emit.bind(this,"connection");this._removeListeners=wl(this._server,{listening:this.emit.bind(this,"listening"),error:this.emit.bind(this,"error"),upgrade:(i,s,o)=>{this.handleUpgrade(i,s,o,r)}})}e.perMessageDeflate===!0&&(e.perMessageDeflate={}),e.clientTracking&&(this.clients=new Set),this.options=e,this._state=Eo}address(){if(this.options.noServer)throw new Error('The server is operating in "noServer" mode');return this._server?this._server.address():null}close(e){if(e&&this.once("close",e),this._state===Mo){process.nextTick(Ar,this);return}if(this._state===Oo)return;if(this._state=Oo,this.clients)for(let r of this.clients)r.terminate();let t=this._server;if(t&&(this._removeListeners(),this._removeListeners=this._server=null,this.options.port!=null)){t.close(Ar.bind(void 0,this));return}process.nextTick(Ar,this)}shouldHandle(e){if(this.options.path){let t=e.url.indexOf("?");if((t!==-1?e.url.slice(0,t):e.url)!==this.options.path)return!1}return!0}handleUpgrade(e,t,r,i){t.on("error",Fr);let s=e.headers["sec-websocket-key"]!==void 0?e.headers["sec-websocket-key"].trim():!1,o=+e.headers["sec-websocket-version"],a={};if(e.method!=="GET"||e.headers.upgrade.toLowerCase()!=="websocket"||!s||!yl.test(s)||o!==8&&o!==13||!this.shouldHandle(e))return qt(t,400);if(this.options.perMessageDeflate){let c=new at(this.options.perMessageDeflate,!0,this.options.maxPayload);try{let u=gl(e.headers["sec-websocket-extensions"]);u[at.extensionName]&&(c.accept(u[at.extensionName]),a[at.extensionName]=c)}catch{return qt(t,400)}}if(this.options.verifyClient){let c={origin:e.headers[`${o===8?"sec-websocket-origin":"origin"}`],secure:!!(e.socket.authorized||e.socket.encrypted),req:e};if(this.options.verifyClient.length===2){this.options.verifyClient(c,(u,l,d,g)=>{if(!u)return 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ut=Rt(),ko=["username","version","session","msg_id","msg_type"],bl={stream:{name:"string",text:"string"},display_data:{data:"object",metadata:"object"},execute_input:{code:"string",execution_count:"number"},execute_result:{execution_count:"number",data:"object",metadata:"object"},error:{ename:"string",evalue:"string",traceback:"object"},status:{execution_state:["string",["starting","idle","busy","restarting","dead"]]},clear_output:{wait:"boolean"},comm_open:{comm_id:"string",target_name:"string",data:"object"},comm_msg:{comm_id:"string",data:"object"},comm_close:{comm_id:"string"},shutdown_reply:{restart:"boolean"}};function Cl(n){for(let e=0;e<ko.length;e++)ut.validateProperty(n,ko[e],"string")}function El(n){ut.validateProperty(n,"metadata","object"),ut.validateProperty(n,"content","object"),ut.validateProperty(n,"channel","string"),Cl(n.header),n.channel==="iopub"&&Ol(n)}Je.validateMessage=El;function Ol(n){if(n.channel==="iopub"){let e=bl[n.header.msg_type];if(e===void 0)return;let 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0?t:hh.ServerConnection.makeSettings(),this._clientId=(r=e.clientId)!==null&&r!==void 0?r:Ye.UUID.uuid4(),this._username=(i=e.username)!==null&&i!==void 0?i:"",this.handleComms=(s=e.handleComms)!==null&&s!==void 0?s:!0,this._createSocket()}get disposed(){return this._disposed}get statusChanged(){return this._statusChanged}get connectionStatusChanged(){return this._connectionStatusChanged}get iopubMessage(){return this._iopubMessage}get unhandledMessage(){return this._unhandledMessage}get model(){return{id:this.id,name:this.name}}get anyMessage(){return this._anyMessage}get id(){return this._id}get name(){return this._name}get username(){return this._username}get clientId(){return this._clientId}get status(){return this._status}get connectionStatus(){return this._connectionStatus}get isDisposed(){return this._isDisposed}get info(){return this._info.promise}get spec(){return 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l=u.indexOf(o);if(l===-1)return;u.length===1?this._displayIdToParentIds.delete(c):(u.splice(l,1),this._displayIdToParentIds.set(c,u))}}),this._msgIdToDisplayIds.delete(o))},t,r,i,this);return this._futures.set(t.header.msg_id,s),s}_sendMessage(e,t=!0){if(this.status==="dead")throw new Error("Kernel is dead");if((this._kernelSession===ph||this._kernelSession===vt)&&we.isInfoRequestMsg(e))if(this.connectionStatus==="connected"){this._ws.send(ri.serialize(e));return}else throw new Error("Could not send message: status is not connected");if(t&&this._pendingMessages.length>0){this._pendingMessages.push(e);return}if(this.connectionStatus==="connected"&&this._kernelSession!==vt)this._ws.send(ri.serialize(e));else if(t)this._pendingMessages.push(e);else throw new Error("Could not send message")}async interrupt(){if(this.status==="dead")throw new Error("Kernel is dead");return Sn.interruptKernel(this.id,this.serverSettings)}async restart(){if(this.status==="dead")throw new Error("Kernel is dead");this._updateStatus("restarting"),this._clearKernelState(),this._kernelSession=vt,await Sn.restartKernel(this.id,this.serverSettings),await this.reconnect()}reconnect(){this._errorIfDisposed();let e=new Ye.PromiseDelegate,t=(r,i)=>{i==="connected"?(e.resolve(),this.connectionStatusChanged.disconnect(t,this)):i==="disconnected"&&(e.reject(new Error("Kernel connection disconnected")),this.connectionStatusChanged.disconnect(t,this))};return this.connectionStatusChanged.connect(t,this),this._reconnectAttempt=0,this._reconnect(),e.promise}async shutdown(){this.status!=="dead"&&await Sn.shutdownKernel(this.id,this.serverSettings),this.handleShutdown()}handleShutdown(){this._updateStatus("dead"),this.dispose()}async requestKernelInfo(){let e=we.createMessage({msgType:"kernel_info_request",channel:"shell",username:this._username,session:this._clientId,content:{}}),t;try{t=await Oe.handleShellMessage(this,e)}catch(r){if(this.isDisposed)return;throw r}if(this._errorIfDisposed(),!!t)return t.content.status===void 0&&(t.content.status="ok"),t.content.status!=="ok"?(this._info.reject("Kernel info reply errored"),t):(this._info.resolve(t.content),this._kernelSession=t.header.session,t)}requestComplete(e){let t=we.createMessage({msgType:"complete_request",channel:"shell",username:this._username,session:this._clientId,content:e});return Oe.handleShellMessage(this,t)}requestInspect(e){let t=we.createMessage({msgType:"inspect_request",channel:"shell",username:this._username,session:this._clientId,content:e});return Oe.handleShellMessage(this,t)}requestHistory(e){let t=we.createMessage({msgType:"history_request",channel:"shell",username:this._username,session:this._clientId,content:e});return Oe.handleShellMessage(this,t)}requestExecute(e,t=!0,r){let i={silent:!1,store_history:!0,user_expressions:{},allow_stdin:!0,stop_on_error:!1},s=we.createMessage({msgType:"execute_request",channel:"shell",username:this._username,session:this._clientId,content:Object.assign(Object.assign({},i),e),metadata:r});return this.sendShellMessage(s,!0,t)}requestDebug(e,t=!0){let r=we.createMessage({msgType:"debug_request",channel:"control",username:this._username,session:this._clientId,content:e});return this.sendControlMessage(r,!0,t)}requestIsComplete(e){let t=we.createMessage({msgType:"is_complete_request",channel:"shell",username:this._username,session:this._clientId,content:e});return Oe.handleShellMessage(this,t)}requestCommInfo(e){let t=we.createMessage({msgType:"comm_info_request",channel:"shell",username:this._username,session:this._clientId,content:e});return Oe.handleShellMessage(this,t)}sendInputReply(e){let t=we.createMessage({msgType:"input_reply",channel:"stdin",username:this._username,session:this._clientId,content:e});this._sendMessage(t),this._anyMessage.emit({msg:t,direction:"send"})}createComm(e,t=Ye.UUID.uuid4()){if(!this.handleComms)throw new Error("Comms are disabled on this kernel connection");if(this._comms.has(t))throw new Error("Comm is already created");let r=new Yo.CommHandler(e,t,this,()=>{this._unregisterComm(t)});return this._comms.set(t,r),r}hasComm(e){return this._comms.has(e)}registerCommTarget(e,t){this.handleComms&&(this._targetRegistry[e]=t)}removeCommTarget(e,t){this.handleComms&&!this.isDisposed&&this._targetRegistry[e]===t&&delete this._targetRegistry[e]}registerMessageHook(e,t){var r;let i=(r=this._futures)===null||r===void 0?void 0:r.get(e);i&&i.registerMessageHook(t)}removeMessageHook(e,t){var r;let i=(r=this._futures)===null||r===void 0?void 0:r.get(e);i&&i.removeMessageHook(t)}async _handleDisplayId(e,t){var r,i;let s=t.parent_header.msg_id,o=this._displayIdToParentIds.get(e);if(o){let c={header:Ye.JSONExt.deepCopy(t.header),parent_header:Ye.JSONExt.deepCopy(t.parent_header),metadata:Ye.JSONExt.deepCopy(t.metadata),content:Ye.JSONExt.deepCopy(t.content),channel:t.channel,buffers:t.buffers?t.buffers.slice():[]};c.header.msg_type="update_display_data",await Promise.all(o.map(async u=>{let l=this._futures&&this._futures.get(u);l&&await l.handleMsg(c)}))}if(t.header.msg_type==="update_display_data")return!0;o=(r=this._displayIdToParentIds.get(e))!==null&&r!==void 0?r:[],o.indexOf(s)===-1&&o.push(s),this._displayIdToParentIds.set(e,o);let a=(i=this._msgIdToDisplayIds.get(s))!==null&&i!==void 0?i:[];return a.indexOf(s)===-1&&a.push(s),this._msgIdToDisplayIds.set(s,a),!1}_clearSocket(){this._ws!==null&&(this._ws.onopen=this._noOp,this._ws.onclose=this._noOp,this._ws.onerror=this._noOp,this._ws.onmessage=this._noOp,this._ws.close(),this._ws=null)}_updateStatus(e){this._status===e||this._status==="dead"||(this._status=e,Oe.logKernelStatus(this),this._statusChanged.emit(e),e==="dead"&&this.dispose())}_sendPending(){for(;this.connectionStatus==="connected"&&this._kernelSession!==vt&&this._pendingMessages.length>0;)this._sendMessage(this._pendingMessages[0],!1),this._pendingMessages.shift()}_clearKernelState(){this._kernelSession="",this._pendingMessages=[],this._futures.forEach(e=>{e.dispose()}),this._comms.forEach(e=>{e.dispose()}),this._msgChain=Promise.resolve(),this._futures=new Map,this._comms=new Map,this._displayIdToParentIds.clear(),this._msgIdToDisplayIds.clear()}_assertCurrentMessage(e){if(this._errorIfDisposed(),e.header.session!==this._kernelSession)throw new Error(`Canceling handling of old message: ${e.header.msg_type}`)}async _handleCommOpen(e){this._assertCurrentMessage(e);let t=e.content,r=new Yo.CommHandler(t.target_name,t.comm_id,this,()=>{this._unregisterComm(t.comm_id)});this._comms.set(t.comm_id,r);try{await(await Oe.loadObject(t.target_name,t.target_module,this._targetRegistry))(r,e)}catch(i){throw r.close(),console.error("Exception opening new comm"),i}}async _handleCommClose(e){this._assertCurrentMessage(e);let t=e.content,r=this._comms.get(t.comm_id);if(!r){console.error("Comm not found for comm id "+t.comm_id);return}this._unregisterComm(r.commId);let i=r.onClose;i&&await i(e),r.dispose()}async _handleCommMsg(e){this._assertCurrentMessage(e);let t=e.content,r=this._comms.get(t.comm_id);if(!r)return;let i=r.onMsg;i&&await 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Ve=ie(),Uh=Ge(),ca=xn(),Nh=Ee(),_i=class{constructor(e){var t,r,i,s;this._id="",this._path="",this._name="",this._type="",this._kernel=null,this._isDisposed=!1,this._disposed=new Ve.Signal(this),this._kernelChanged=new Ve.Signal(this),this._statusChanged=new Ve.Signal(this),this._connectionStatusChanged=new Ve.Signal(this),this._iopubMessage=new Ve.Signal(this),this._unhandledMessage=new Ve.Signal(this),this._anyMessage=new Ve.Signal(this),this._propertyChanged=new Ve.Signal(this),this._id=e.model.id,this._name=e.model.name,this._path=e.model.path,this._type=e.model.type,this._username=(t=e.username)!==null&&t!==void 0?t:"",this._clientId=(r=e.clientId)!==null&&r!==void 0?r:Nh.UUID.uuid4(),this._connectToKernel=e.connectToKernel,this._kernelConnectionOptions=(i=e.kernelConnectionOptions)!==null&&i!==void 0?i:{},this.serverSettings=(s=e.serverSettings)!==null&&s!==void 0?s:Uh.ServerConnection.makeSettings(),this.setupKernel(e.model.kernel)}get disposed(){return this._disposed}get 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changed(){return this._changed}async clear(){await this._ready,await this._clear()}async fetch(e){return await this._ready,this._fetch(e)}async list(e){return await this._ready,this._list(e)}async remove(e){await this._ready,await this._remove(e),this._changed.emit({id:e,type:"remove"})}async save(e,t){await this._ready,await this._save(e,t),this._changed.emit({id:e,type:"save"})}async toJSON(){await this._ready;let{ids:e,values:t}=await this._list();return t.reduce((r,i,s)=>(r[e[s]]=i,r),{})}async _clear(){await Promise.all((await this._list()).ids.map(e=>this._remove(e)))}async _fetch(e){let t=await this._connector.fetch(e);if(t)return JSON.parse(t).v}async _list(e=""){let{ids:t,values:r}=await this._connector.list(e);return{ids:t,values:r.map(i=>JSON.parse(i).v)}}async _merge(e){await Promise.all(Object.keys(e).map(t=>e[t]&&this._save(t,e[t])))}async _overwrite(e){await this._clear(),await this._merge(e)}async _remove(e){return this._connector.remove(e)}async _save(e,t){return 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We.ServerConnection.ResponseError.create(s)}de.shutdownTerminal=td;var $t;(function(n){function e(){if(!ba())throw new Error("Terminals Unavailable")}n.errorIfNotAvailable=e})($t||($t={}))});var Ca=R(An=>{"use strict";Object.defineProperty(An,"__esModule",{value:!0});An.isAvailable=void 0;var nd=Gt();Object.defineProperty(An,"isAvailable",{enumerable:!0,get:function(){return nd.isAvailable}})});var Ma=R(Fn=>{"use strict";Object.defineProperty(Fn,"__esModule",{value:!0});Fn.TerminalConnection=void 0;var Ea=pe(),rd=Ee(),Bn=ie(),id=Ge(),Oa=Gt(),bi=class n{constructor(e){var t;this._createSocket=()=>{this._errorIfDisposed(),this._clearSocket(),this._updateConnectionStatus("connecting");let r=this._name,i=this.serverSettings,s=Ea.URLExt.join(i.wsUrl,"terminals","websocket",encodeURIComponent(r)),o=i.token;i.appendToken&&o!==""&&(s=s+`?token=${encodeURIComponent(o)}`),this._ws=new i.WebSocket(s),this._ws.onmessage=this._onWSMessage,this._ws.onclose=this._onWSClose,this._ws.onerror=this._onWSClose},this._onWSMessage=r=>{if(this._isDisposed)return;let i=JSON.parse(r.data);if(i[0]==="disconnect"&&this.dispose(),this._connectionStatus==="connecting"){i[0]==="setup"&&this._updateConnectionStatus("connected");return}this._messageReceived.emit({type:i[0],content:i.slice(1)})},this._onWSClose=r=>{console.warn(`Terminal websocket closed: ${r.code}`),this.isDisposed||this._reconnect()},this._connectionStatus="connecting",this._connectionStatusChanged=new Bn.Signal(this),this._isDisposed=!1,this._disposed=new Bn.Signal(this),this._messageReceived=new Bn.Signal(this),this._reconnectTimeout=null,this._ws=null,this._noOp=()=>{},this._reconnectLimit=7,this._reconnectAttempt=0,this._pendingMessages=[],this._name=e.model.name,this.serverSettings=(t=e.serverSettings)!==null&&t!==void 0?t:id.ServerConnection.makeSettings(),this._createSocket()}get disposed(){return this._disposed}get messageReceived(){return this._messageReceived}get name(){return this._name}get model(){return{name:this._name}}get isDisposed(){return this._isDisposed}dispose(){this._isDisposed||(this._isDisposed=!0,this._disposed.emit(),this._updateConnectionStatus("disconnected"),this._clearSocket(),Bn.Signal.clearData(this))}send(e){this._sendMessage(e)}_sendMessage(e,t=!0){if(!(this._isDisposed||!e.content))if(this.connectionStatus==="connected"&&this._ws){let r=[e.type,...e.content];this._ws.send(JSON.stringify(r))}else if(t)this._pendingMessages.push(e);else throw new Error(`Could not send message: ${JSON.stringify(e)}`)}_sendPending(){for(;this.connectionStatus==="connected"&&this._pendingMessages.length>0;)this._sendMessage(this._pendingMessages[0],!1),this._pendingMessages.shift()}reconnect(){this._errorIfDisposed();let e=new rd.PromiseDelegate,t=(r,i)=>{i==="connected"?(e.resolve(),this.connectionStatusChanged.disconnect(t,this)):i==="disconnected"&&(e.reject(new Error("Terminal connection disconnected")),this.connectionStatusChanged.disconnect(t,this))};return this.connectionStatusChanged.connect(t,this),this._reconnectAttempt=0,this._reconnect(),e.promise}_reconnect(){if(this._errorIfDisposed(),clearTimeout(this._reconnectTimeout),this._reconnectAttempt<this._reconnectLimit){this._updateConnectionStatus("connecting");let e=Ci.getRandomIntInclusive(0,1e3*(Math.pow(2,this._reconnectAttempt)-1));console.error(`Connection lost, reconnecting in ${Math.floor(e/1e3)} seconds.`),this._reconnectTimeout=setTimeout(this._createSocket,e),this._reconnectAttempt+=1}else this._updateConnectionStatus("disconnected");this._clearSocket()}_clearSocket(){this._ws!==null&&(this._ws.onopen=this._noOp,this._ws.onclose=this._noOp,this._ws.onerror=this._noOp,this._ws.onmessage=this._noOp,this._ws.close(),this._ws=null)}async shutdown(){await Oa.shutdownTerminal(this.name,this.serverSettings),this.dispose()}clone(){return new n(this)}_updateConnectionStatus(e){this._connectionStatus!==e&&(this._connectionStatus=e,e!=="connecting"&&(this._reconnectAttempt=0,clearTimeout(this._reconnectTimeout)),e==="connected"&&this._sendPending(),this._connectionStatusChanged.emit(e))}_errorIfDisposed(){if(this.isDisposed)throw new Error("Terminal connection is disposed")}get connectionStatusChanged(){return this._connectionStatusChanged}get connectionStatus(){return this._connectionStatus}};Fn.TerminalConnection=bi;var Ci;(function(n){function e(r,i){return Ea.URLExt.join(r,Oa.TERMINAL_SERVICE_URL,encodeURIComponent(i))}n.getTermUrl=e;function t(r,i){return r=Math.ceil(r),i=Math.floor(i),Math.floor(Math.random()*(i-r+1))+r}n.getRandomIntInclusive=t})(Ci||(Ci={}))});var xa=R(Kn=>{"use strict";Object.defineProperty(Kn,"__esModule",{value:!0});Kn.TerminalManager=void 0;var sd=et(),od=Lt(),Ra=ie(),ad=Ge(),cd=At(),Ht=Gt(),ud=Ma(),Ei=class extends cd.BaseManager{constructor(e={}){var t;if(super(e),this._isReady=!1,this._names=[],this._terminalConnections=new Set,this._runningChanged=new Ra.Signal(this),this._connectionFailure=new Ra.Signal(this),!this.isAvailable()){this._ready=Promise.reject("Terminals unavailable"),this._ready.catch(r=>{});return}this._pollModels=new od.Poll({auto:!1,factory:()=>this.requestRunning(),frequency:{interval:10*1e3,backoff:!0,max:300*1e3},name:"@jupyterlab/services:TerminalManager#models",standby:(t=e.standby)!==null&&t!==void 0?t:"when-hidden"}),this._ready=(async()=>{await this._pollModels.start(),await this._pollModels.tick,this._isReady=!0})()}get isReady(){return this._isReady}get ready(){return this._ready}get runningChanged(){return this._runningChanged}get connectionFailure(){return this._connectionFailure}dispose(){this.isDisposed||(this._names.length=0,this._terminalConnections.forEach(e=>e.dispose()),this._pollModels.dispose(),super.dispose())}isAvailable(){return Ht.isAvailable()}connectTo(e){let t=new ud.TerminalConnection(Object.assign(Object.assign({},e),{serverSettings:this.serverSettings}));return this._onStarted(t),this._names.includes(e.model.name)||this.refreshRunning().catch(()=>{}),t}running(){return sd.iter(this._models)}async refreshRunning(){await this._pollModels.refresh(),await this._pollModels.tick}async startNew(){let e=await Ht.startNew(this.serverSettings);return await this.refreshRunning(),this.connectTo({model:e})}async shutdown(e){await Ht.shutdownTerminal(e,this.serverSettings),await this.refreshRunning()}async shutdownAll(){await this.refreshRunning(),await Promise.all(this._names.map(e=>Ht.shutdownTerminal(e,this.serverSettings))),await this.refreshRunning()}async requestRunning(){var e,t;let r;try{r=await Ht.listRunning(this.serverSettings)}catch(s){throw(s instanceof ad.ServerConnection.NetworkError||((e=s.response)===null||e===void 0?void 0:e.status)===503||((t=s.response)===null||t===void 0?void 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/*! Bundled license information:

@lumino/polling/dist/index.js:
  (*! *****************************************************************************
      Copyright (c) Microsoft Corporation.
  
      Permission to use, copy, modify, and/or distribute this software for any
      purpose with or without fee is hereby granted.
  
      THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
      REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
      AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
      INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
      LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
      OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
      PERFORMANCE OF THIS SOFTWARE.
      ***************************************************************************** *)

@lumino/disposable/dist/index.js:
  (*! *****************************************************************************
      Copyright (c) Microsoft Corporation.
  
      Permission to use, copy, modify, and/or distribute this software for any
      purpose with or without fee is hereby granted.
  
      THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
      REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
      AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
      INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
      LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
      OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
      PERFORMANCE OF THIS SOFTWARE.
      ***************************************************************************** *)
*/