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n=[],r=this.stream;for(n.push(e);2359296==(r._duplexState&ut);)n.push(r._writableState.shift());if(15&r._duplexState)return t(null);r._writev(n,t)}},{key:"update",value:function(){var e=this.stream;e._duplexState|=$e;do{for(;(e._duplexState&ut)===Qe;){var t=this.shift();e._duplexState|=67371008,e._write(t,this.afterWrite)}1310720&e._duplexState||this.updateNonPrimary()}while(!0===this.continueUpdate());e._duplexState&=536346623}},{key:"updateNonPrimary",value:function(){var e=this.stream;if(134217728==(144965647&e._duplexState))return e._duplexState=402653183&e._duplexState|262144,void e._final(pt.bind(this));4!=(14&e._duplexState)?1==(e._duplexState&st)&&(e._duplexState=(e._duplexState|rt)&He,e._open(bt.bind(this))):e._duplexState&ot||(e._duplexState|=rt,e._destroy(_t.bind(this)))}},{key:"continueUpdate",value:function(){return!!(this.stream._duplexState&et)&&(this.stream._duplexState&=nt,!0)}},{key:"updateCallback",value:function(){(35127311&this.stream._duplexState)===Ge?this.update():this.updateNextTick()}},{key:"updateNextTick",value:function(){this.stream._duplexState&et||(this.stream._duplexState|=et,this.stream._duplexState&$e||Ue(this.afterUpdateNextTick))}}]),e}(),dt=function(){"use strict";function e(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},r=n.highWaterMark,i=void 0===r?16384:r,a=n.map,o=void 0===a?null:a,s=n.mapReadable,u=n.byteLength,c=n.byteLengthReadable;(0,k.default)(this,e),this.stream=t,this.queue=new qe,this.highWaterMark=0===i?1:i,this.buffered=0,this.readAhead=i>0,this.error=null,this.pipeline=null,this.byteLength=c||u||Tt,this.map=s||o,this.pipeTo=null,this.afterRead=yt.bind(this),this.afterUpdateNextTick=mt.bind(this)}return(0,E.default)(e,[{key:"ended",get:function(){return!!(this.stream._duplexState&Be)}},{key:"pipe",value:function(e,t){if(null!==this.pipeTo)throw Error("Can only pipe to one destination");if("function"!=typeof t&&(t=null),this.stream._duplexState|=512,this.pipeTo=e,this.pipeline=new ft(this.stream,e,t),t&&this.stream.on("error",Rt),xt(e))e._writableState.pipeline=this.pipeline,t&&e.on("error",Rt),e.on("finish",this.pipeline.finished.bind(this.pipeline));else{var n=this.pipeline.done.bind(this.pipeline,e),r=this.pipeline.done.bind(this.pipeline,e,null);e.on("error",n),e.on("close",r),e.on("finish",this.pipeline.finished.bind(this.pipeline))}e.on("drain",ht.bind(this)),this.stream.emit("piping",e),e.emit("pipe",this.stream)}},{key:"push",value:function(e){var t=this.stream;return null===e?(this.highWaterMark=0,t._duplexState=536805311&t._duplexState|1024,!1):(null!==this.map&&null===(e=this.map(e))||(this.buffered+=this.byteLength(e),this.queue.push(e),t._duplexState=536805375&t._duplexState|128),this.buffered<this.highWaterMark)}},{key:"shift",value:function(){var e=this.queue.shift();return this.buffered-=this.byteLength(e),0===this.buffered&&(this.stream._duplexState&=536862591),e}},{key:"unshift",value:function(e){for(var t=[null!==this.map?this.map(e):e];this.buffered>0;)t.push(this.shift());for(var n=0;n<t.length-1;n++){var r=t[n];this.buffered+=this.byteLength(r),this.queue.push(r)}this.push(t[t.length-1])}},{key:"read",value:function(){var e=this.stream;if(128==(16527&e._duplexState)){var t=this.shift();return null!==this.pipeTo&&!1===this.pipeTo.write(t)&&(e._duplexState&=ze),2048&e._duplexState&&e.emit("data",t),t}return!1===this.readAhead&&(e._duplexState|=Je,this.updateNextTick()),null}},{key:"drain",value:function(){for(var e=this.stream;128==(16527&e._duplexState)&&768&e._duplexState;){var t=this.shift();null!==this.pipeTo&&!1===this.pipeTo.write(t)&&(e._duplexState&=ze),2048&e._duplexState&&e.emit("data",t)}}},{key:"update",value:function(){var e=this.stream;e._duplexState|=32;do{for(this.drain();this.buffered<this.highWaterMark&&(214047&e._duplexState)===Je;)e._duplexState|=65552,e._read(this.afterRead),this.drain();4224==(12431&e._duplexState)&&(e._duplexState|=8192,e.emit("readable")),80&e._duplexState||this.updateNonPrimary()}while(!0===this.continueUpdate());e._duplexState&=536870879}},{key:"updateNonPrimary",value:function(){var e=this.stream;1024==(1167&e._duplexState)&&(e._duplexState=536869887&e._duplexState|16384,e.emit("end"),(e._duplexState&at)===it&&(e._duplexState|=4),null!==this.pipeTo&&this.pipeTo.end()),4!=(14&e._duplexState)?1==(e._duplexState&st)&&(e._duplexState=(e._duplexState|rt)&He,e._open(bt.bind(this))):e._duplexState&ot||(e._duplexState|=rt,e._destroy(_t.bind(this)))}},{key:"continueUpdate",value:function(){return!!(this.stream._duplexState&Ye)&&(this.stream._duplexState&=Ke,!0)}},{key:"updateCallback",value:function(){64==(32879&this.stream._duplexState)?this.update():this.updateNextTick()}},{key:"updateNextTick",value:function(){this.stream._duplexState&Ye||(this.stream._duplexState|=Ye,32&this.stream._duplexState||Ue(this.afterUpdateNextTick))}}]),e}(),ft=function(){"use strict";function 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t=this.stream;e||this.error===je||(e=this.error),e&&t.emit("error",e),t._duplexState|=8,t.emit("close");var n=t._readableState,r=t._writableState;if(null!==n&&null!==n.pipeline&&n.pipeline.done(t,e),null!==r){for(;null!==r.drains&&r.drains.length>0;)r.drains.shift().resolve(!1);null!==r.pipeline&&r.pipeline.done(t,e)}}function vt(e){var t=this.stream;e&&t.destroy(e),t._duplexState&=tt,null!==this.drains&&function(e){for(var t=0;t<e.length;t++)0==--e[t].writes&&(e.shift().resolve(!0),t--)}(this.drains),4194304==(6553615&t._duplexState)&&(t._duplexState&=532676607,(t._duplexState&Xe)===Xe&&t.emit("drain")),this.updateCallback()}function yt(e){e&&this.stream.destroy(e),this.stream._duplexState&=536870895,!1!==this.readAhead||256&this.stream._duplexState||(this.stream._duplexState&=Ve),this.updateCallback()}function mt(){32&this.stream._duplexState||(this.stream._duplexState&=Ke,this.update())}function gt(){this.stream._duplexState&$e||(this.stream._duplexState&=nt,this.update())}function 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