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function(e,n){var r=e.pow(n,t);if(!e.eql(e.sqr(r),n))throw Error("Cannot find square root");return r}}if(e%Te===Ae){var n=(e-Ae)/Te;return function(e,t){var r=e.mul(t,ke),i=e.pow(r,n),a=e.mul(t,i),o=e.mul(e.mul(a,ke),i),u=e.mul(a,e.sub(o,e.ONE));if(!e.eql(e.sqr(u),t))throw Error("Cannot find square root");return u}}return function(e){var t,n,r,i=(e-Se)/ke;for(t=e-Se,n=0;t%ke===Ee;t/=ke,n++);for(r=ke;r<e&&Ie(r,i,e)!==e-Se;r++);if(1===n){var a=(e+Se)/xe;return function(e,t){var n=e.pow(t,a);if(!e.eql(e.sqr(n),t))throw Error("Cannot find square root");return n}}var o=(t+Se)/ke;return function(e,a){if(e.pow(a,i)===e.neg(e.ONE))throw Error("Cannot find square root");for(var u=n,s=e.pow(e.mul(e.ONE,r),t),c=e.pow(a,o),l=e.pow(a,t);!e.eql(l,e.ONE);){if(e.eql(l,e.ZERO))return e.ZERO;for(var f=1,d=e.sqr(l);f<u&&!e.eql(d,e.ONE);f++)d=e.sqr(d);var h=e.pow(s,Se<<BigInt(u-f-1));s=e.sqr(h),c=e.mul(c,h),l=e.mul(l,s),u=f}return c}}(e)}(e),s=Object.freeze({ORDER:e,BITS:a,BYTES:o,MASK:ve(a),ZERO:Ee,ONE:Se,create:function(t){return Re(t,e)},isValid:function(t){if("bigint"!=(void 0===t?"undefined":(0,T.default)(t)))throw Error("Invalid field element: expected bigint, got "+(void 0===t?"undefined":(0,T.default)(t)));return Ee<=t&&t<e},is0:function(e){return e===Ee},isOdd:function(e){return(e&Se)===Se},neg:function(t){return Re(-t,e)},eql:function(e,t){return e===t},sqr:function(t){return Re(t*t,e)},add:function(t,n){return Re(t+n,e)},sub:function(t,n){return Re(t-n,e)},mul:function(t,n){return Re(t*n,e)},pow:function(e,t){return function(e,t,n){if(n<Ee)throw Error("Expected power > 0");if(n===Ee)return e.ONE;if(n===Se)return t;for(var r=e.ONE,i=t;n>Ee;)n&Se&&(r=e.mul(r,i)),i=e.sqr(i),n>>=Se;return r}(s,e,t)},div:function(t,n){return Re(t*Be(n,e),e)},sqrN:function(e){return e*e},addN:function(e,t){return e+t},subN:function(e,t){return e-t},mulN:function(e,t){return e*t},inv:function(t){return Be(t,e)},sqrt:r.sqrt||function(e){return u(s,e)},invertBatch:function(e){return function(e,t){var n=Array(t.length),r=t.reduce((function(t,r,i){return e.is0(r)?t:(n[i]=t,e.mul(t,r))}),e.ONE),i=e.inv(r);return t.reduceRight((function(t,r,i){return e.is0(r)?t:(n[i]=e.mul(t,n[i]),e.mul(t,r))}),i),n}(s,e)},cmov:function(e,t,n){return n?t:e},toBytes:function(e){return n?de(e,o):fe(e,o)},fromBytes:function(e){if(e.length!==o)throw Error("Fp.fromBytes: expected ".concat(o,", got ").concat(e.length));return n?le(e):ce(e)}});return Object.freeze(s)}(Ze,void 0,void 0,{sqrt:Qe}),et=function(e,t){var n=function(t){return function(e){var t=function(e){var t=Me(e);return be(t,{hash:"hash",hmac:"function",randomBytes:"function"},{bits2int:"function",bits2int_modN:"function",lowS:"boolean"}),Object.freeze((0,S.default)({lowS:!0},t))}(e),n=t.Fp,r=t.n,i=n.BYTES+1,a=2*n.BYTES+1;function o(e){return Re(e,r)}function u(e){return Be(e,r)}var s=function(e){var t=function(e){var t=Me(e);be(t,{a:"field",b:"field"},{allowedPrivateKeyLengths:"array",wrapPrivateKey:"boolean",isTorsionFree:"function",clearCofactor:"function",allowInfinityPoint:"boolean",fromBytes:"function",toBytes:"function"});var n=t.endo,r=t.Fp,i=t.a;if(n){if(!r.eql(i,r.ZERO))throw Error("Endomorphism can only be defined for Koblitz curves that have a=0");if("object"!=typeof n||"bigint"!=(0,T.default)(n.beta)||"function"!=typeof n.splitScalar)throw Error("Expected endomorphism with beta: bigint and splitScalar: function")}return Object.freeze((0,S.default)({},t))}(e),n=t.Fp,r=t.toBytes||function(e,t){var r=t.toAffine();return pe(Uint8Array.from([4]),n.toBytes(r.x),n.toBytes(r.y))},i=t.fromBytes||function(e){var t=e.subarray(1);return{x:n.fromBytes(t.subarray(0,n.BYTES)),y:n.fromBytes(t.subarray(n.BYTES,2*n.BYTES))}};function a(e){var r=t.a,i=t.b,a=n.sqr(e),o=n.mul(a,e);return n.add(n.add(o,n.mul(e,r)),i)}if(!n.eql(n.sqr(t.Gy),a(t.Gx)))throw Error("bad generator point: equation left != right");function o(e){return"bigint"==(void 0===e?"undefined":(0,T.default)(e))&&We<e&&e<t.n}function u(e){if(!o(e))throw Error("Expected valid bigint: 0 < bigint < curve.n")}function s(e){var n,r=t.allowedPrivateKeyLengths,i=t.nByteLength,a=t.wrapPrivateKey,o=t.n;if(r&&"bigint"!=(void 0===e?"undefined":(0,T.default)(e))){if(ee(e)&&(e=re(e)),"string"!=typeof e||!r.includes(e.length))throw Error("Invalid key");e=e.padStart(2*i,"0")}try{n="bigint"==(void 0===e?"undefined":(0,T.default)(e))?e:ce(he("private key",e,i))}catch(t){throw Error("private key must be ".concat(i," bytes, hex or bigint, not ").concat(void 0===e?"undefined":(0,T.default)(e)))}return a&&(n=Re(n,o)),u(n),n}var c=new Map;function l(e){if(!(e instanceof f))throw Error("ProjectivePoint expected")}var f=function(){"use strict";function e(t,r,i){if((0,_.default)(this,e),this.px=t,this.py=r,this.pz=i,null==t||!n.isValid(t))throw Error("x required");if(null==r||!n.isValid(r))throw Error("y required");if(null==i||!n.isValid(i))throw Error("z required")}return(0,b.default)(e,[{key:"x",get:function(){return this.toAffine().x}},{key:"y",get:function(){return this.toAffine().y}},{key:"_setWindowSize",value:function(e){this._WINDOW_SIZE=e,c.delete(this)}},{key:"assertValidity",value:function(){if(this.is0()){if(t.allowInfinityPoint&&!n.is0(this.py))return;throw Error("bad point: ZERO")}var e=this.toAffine(),r=e.x,i=e.y;if(!n.isValid(r)||!n.isValid(i))throw Error("bad point: x or y not FE");var o=n.sqr(i),u=a(r);if(!n.eql(o,u))throw Error("bad point: equation left != right");if(!this.isTorsionFree())throw Error("bad point: not in prime-order subgroup")}},{key:"hasEvenY",value:function(){var e=this.toAffine().y;if(n.isOdd)return!n.isOdd(e);throw Error("Field doesn't support isOdd")}},{key:"equals",value:function(e){l(e);var t=this,r=t.px,i=t.py,a=t.pz,o=e.px,u=e.py,s=e.pz,c=n.eql(n.mul(r,s),n.mul(o,a)),f=n.eql(n.mul(i,s),n.mul(u,a));return c&&f}},{key:"negate",value:function(){return new e(this.px,n.neg(this.py),this.pz)}},{key:"double",value:function(){var r=t.a,i=t.b,a=n.mul(i,Ve),o=this,u=o.px,s=o.py,c=o.pz,l=n.ZERO,f=n.ZERO,d=n.ZERO,h=n.mul(u,u),p=n.mul(s,s),v=n.mul(c,c),y=n.mul(u,s);return y=n.add(y,y),d=n.mul(u,c),d=n.add(d,d),l=n.mul(r,d),f=n.mul(a,v),f=n.add(l,f),l=n.sub(p,f),f=n.add(p,f),f=n.mul(l,f),l=n.mul(y,l),d=n.mul(a,d),v=n.mul(r,v),y=n.sub(h,v),y=n.mul(r,y),y=n.add(y,d),d=n.add(h,h),h=n.add(d,h),h=n.add(h,v),h=n.mul(h,y),f=n.add(f,h),v=n.mul(s,c),v=n.add(v,v),h=n.mul(v,y),l=n.sub(l,h),d=n.mul(v,p),d=n.add(d,d),new e(l,f,d=n.add(d,d))}},{key:"add",value:function(r){l(r);var i=this,a=i.px,o=i.py,u=i.pz,s=r.px,c=r.py,f=r.pz,d=n.ZERO,h=n.ZERO,p=n.ZERO,v=t.a,y=n.mul(t.b,Ve),g=n.mul(a,s),m=n.mul(o,c),_=n.mul(u,f),b=n.add(a,o),w=n.add(s,c);b=n.mul(b,w),w=n.add(g,m),b=n.sub(b,w),w=n.add(a,u);var E=n.add(s,f);return w=n.mul(w,E),E=n.add(g,_),w=n.sub(w,E),E=n.add(o,u),d=n.add(c,f),E=n.mul(E,d),d=n.add(m,_),E=n.sub(E,d),p=n.mul(v,w),d=n.mul(y,_),p=n.add(d,p),d=n.sub(m,p),p=n.add(m,p),h=n.mul(d,p),m=n.add(g,g),m=n.add(m,g),_=n.mul(v,_),w=n.mul(y,w),m=n.add(m,_),_=n.sub(g,_),_=n.mul(v,_),w=n.add(w,_),g=n.mul(m,w),h=n.add(h,g),g=n.mul(E,w),d=n.mul(b,d),d=n.sub(d,g),g=n.mul(b,m),p=n.mul(E,p),new e(d,h,p=n.add(p,g))}},{key:"subtract",value:function(e){return this.add(e.negate())}},{key:"is0",value:function(){return this.equals(e.ZERO)}},{key:"wNAF",value:function(t){return h.wNAFCached(this,c,t,(function(t){var r=n.invertBatch(t.map((function(e){return e.pz})));return t.map((function(e,t){return e.toAffine(r[t])})).map(e.fromAffine)}))}},{key:"multiplyUnsafe",value:function(r){var i=e.ZERO;if(r===We)return i;if(u(r),r===Ke)return this;var a=t.endo;if(!a)return h.unsafeLadder(this,r);for(var o=a.splitScalar(r),s=o.k1neg,c=o.k1,l=o.k2neg,f=o.k2,d=i,p=i,v=this;c>We||f>We;)c&Ke&&(d=d.add(v)),f&Ke&&(p=p.add(v)),v=v.double(),c>>=Ke,f>>=Ke;return s&&(d=d.negate()),l&&(p=p.negate()),p=new e(n.mul(p.px,a.beta),p.py,p.pz),d.add(p)}},{key:"multiply",value:function(r){u(r);var i,a,o=r,s=t.endo;if(s){var c=s.splitScalar(o),l=c.k1neg,f=c.k1,d=c.k2neg,p=c.k2,v=this.wNAF(f),y=v.p,g=v.f,m=this.wNAF(p),_=m.p,b=m.f;y=h.constTimeNegate(l,y),_=h.constTimeNegate(d,_),_=new e(n.mul(_.px,s.beta),_.py,_.pz),i=y.add(_),a=g.add(b)}else{var w=this.wNAF(o);i=w.p,a=w.f}return e.normalizeZ([i,a])[0]}},{key:"multiplyAndAddUnsafe",value:function(t,n,r){var i=e.BASE,a=function(e,t){return t!==We&&t!==Ke&&e.equals(i)?e.multiply(t):e.multiplyUnsafe(t)},o=a(this,n).add(a(t,r));return o.is0()?void 0:o}},{key:"toAffine",value:function(e){var t=this,r=t.px,i=t.py,a=t.pz,o=this.is0();null==e&&(e=o?n.ONE:n.inv(a));var u=n.mul(r,e),s=n.mul(i,e),c=n.mul(a,e);if(o)return{x:n.ZERO,y:n.ZERO};if(!n.eql(c,n.ONE))throw Error("invZ was invalid");return{x:u,y:s}}},{key:"isTorsionFree",value:function(){var n=t.h,r=t.isTorsionFree;if(n===Ke)return!0;if(r)return r(e,this);throw Error("isTorsionFree() has not been declared for the elliptic curve")}},{key:"clearCofactor",value:function(){var n=t.h,r=t.clearCofactor;return n===Ke?this:r?r(e,this):this.multiplyUnsafe(t.h)}},{key:"toRawBytes",value:function(){var t=!(arguments.length>0&&void 0!==arguments[0])||arguments[0];return this.assertValidity(),r(e,this,t)}},{key:"toHex",value:function(){var e=!(arguments.length>0&&void 0!==arguments[0])||arguments[0];return re(this.toRawBytes(e))}}],[{key:"fromAffine",value:function(t){var r=t||{},i=r.x,a=r.y;if(!t||!n.isValid(i)||!n.isValid(a))throw Error("invalid affine point");if(t instanceof e)throw Error("projective point not allowed");var o=function(e){return n.eql(e,n.ZERO)};return o(i)&&o(a)?e.ZERO:new e(i,a,n.ONE)}},{key:"normalizeZ",value:function(t){var r=n.invertBatch(t.map((function(e){return e.pz})));return t.map((function(e,t){return e.toAffine(r[t])})).map(e.fromAffine)}},{key:"fromHex",value:function(t){var n=e.fromAffine(i(he("pointHex",t)));return n.assertValidity(),n}},{key:"fromPrivateKey",value:function(t){return e.BASE.multiply(s(t))}}]),e}();f.BASE=new f(t.Gx,t.Gy,n.ONE),f.ZERO=new f(n.ZERO,n.ONE,n.ZERO);var d=t.nBitLength,h=function(e,t){var n,r=function(e,t){var n=t.negate();return e?n:t},i=function(e){return{windows:Math.ceil(t/e)+1,windowSize:Math.pow(2,e-1)}};return n={constTimeNegate:r,unsafeLadder:function(t,n){for(var r=e.ZERO,i=t;n>Ue;)n&qe&&(r=r.add(i)),i=i.double(),n>>=qe;return r},precomputeWindow:function(e,t){for(var n=i(t),r=n.windows,a=n.windowSize,o=[],u=e,s=u,c=0;c<r;c++){s=u,o.push(s);for(var l=1;l<a;l++)s=s.add(u),o.push(s);u=s.double()}return o}},(0,w.default)(n,"wNAF",(function(t,n,a){for(var o=i(t),u=o.windows,s=o.windowSize,c=e.ZERO,l=e.BASE,f=BigInt(Math.pow(2,t)-1),d=Math.pow(2,t),h=BigInt(t),p=0;p<u;p++){var v=p*s,y=Number(a&f);a>>=h,y>s&&(y-=d,a+=qe);var g=v,m=v+Math.abs(y)-1,_=p%2!=0,b=y<0;0===y?l=l.add(r(_,n[g])):c=c.add(r(b,n[m]))}return{p:c,f:l}})),(0,w.default)(n,"wNAFCached",(function(e,t,n,r){var i=e._WINDOW_SIZE||1,a=t.get(e);return a||(a=this.precomputeWindow(e,i),1!==i&&t.set(e,r(a))),this.wNAF(i,a,n)})),n}(f,t.endo?Math.ceil(d/2):d);return{CURVE:t,ProjectivePoint:f,normPrivateKeyToScalar:s,weierstrassEquation:a,isWithinCurveOrder:o}}((0,k.default)((0,S.default)({},t),{toBytes:function(e,t,r){var i=t.toAffine(),a=n.toBytes(i.x),o=pe;return r?o(Uint8Array.from([t.hasEvenY()?2:3]),a):o(Uint8Array.from([4]),a,n.toBytes(i.y))},fromBytes:function(e){var t=e.length,r=e[0],o=e.subarray(1);if(t!==i||2!==r&&3!==r){if(t===a&&4===r)return{x:n.fromBytes(o.subarray(0,n.BYTES)),y:n.fromBytes(o.subarray(n.BYTES,2*n.BYTES))};throw Error("Point of length ".concat(t," was invalid. Expected ").concat(i," compressed bytes or ").concat(a," uncompressed bytes"))}var u=ce(o);if(!(We<(c=u)&&c<n.ORDER))throw Error("Point is not on curve");var s,c,l=f(u);try{s=n.sqrt(l)}catch(e){var d=e instanceof Error?": "+e.message:"";throw Error("Point is not on curve"+d)}return!(1&~r)!=((s&Ke)===Ke)&&(s=n.neg(s)),{x:u,y:s}}})),c=s.ProjectivePoint,l=s.normPrivateKeyToScalar,f=s.weierstrassEquation,d=s.isWithinCurveOrder,h=function(e){return re(fe(e,t.nByteLength))};function p(e){return e>r>>Ke}var v=function(e,t,n){return ce(e.slice(t,n))},y=function(){"use strict";function e(t,n,r){(0,_.default)(this,e),this.r=t,this.s=n,this.recovery=r,this.assertValidity()}return(0,b.default)(e,[{key:"assertValidity",value:function(){if(!d(this.r))throw Error("r must be 0 < r < CURVE.n");if(!d(this.s))throw Error("s must be 0 < s < CURVE.n")}},{key:"addRecoveryBit",value:function(t){return new e(this.r,this.s,t)}},{key:"recoverPublicKey",value:function(e){var 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n=[],r=this.stream;for(n.push(e);2359296==(r._duplexState&Vn);)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|=On;do{for(;(e._duplexState&Vn)===Pn;){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 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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&=In),2048&e._duplexState&&e.emit("data",t),t}return!1===this.readAhead&&(e._duplexState|=Rn,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&=In),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)===Rn;)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&zn)===Hn&&(e._duplexState|=4),null!==this.pipeTo&&this.pipeTo.end()),4!=(14&e._duplexState)?1==(e._duplexState&Kn)&&(e._duplexState=(e._duplexState|jn)&xn,e._open(ir.bind(this))):e._duplexState&Wn||(e._duplexState|=jn,e._destroy(Xn.bind(this)))}},{key:"continueUpdate",value:function(){return!!(this.stream._duplexState&Tn)&&(this.stream._duplexState&=Nn,!0)}},{key:"updateCallback",value:function(){64==(32879&this.stream._duplexState)?this.update():this.updateNextTick()}},{key:"updateNextTick",value:function(){this.stream._duplexState&Tn||(this.stream._duplexState|=Tn,32&this.stream._duplexState||Sn(this.afterUpdateNextTick))}}]),e}(),Jn=function(){"use strict";function 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t=this.stream;e||this.error===En||(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 er(e){var t=this.stream;e&&t.destroy(e),t._duplexState&=qn,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&Dn)===Dn&&t.emit("drain")),this.updateCallback()}function tr(e){e&&this.stream.destroy(e),this.stream._duplexState&=536870895,!1!==this.readAhead||256&this.stream._duplexState||(this.stream._duplexState&=Bn),this.updateCallback()}function nr(){32&this.stream._duplexState||(this.stream._duplexState&=Nn,this.update())}function rr(){this.stream._duplexState&On||(this.stream._duplexState&=Mn,this.update())}function ir(e){var t=this.stream;e&&t.destroy(e),4&t._duplexState||(17423&t._duplexState||(t._duplexState|=64),142606351&t._duplexState||(t._duplexState|=Ln),t.emit("open")),t._duplexState&=536608751,null!==t._writableState&&t._writableState.updateCallback(),null!==t._readableState&&t._readableState.updateCallback()}function ar(e){null!==this._readableState&&("data"===e&&(this._duplexState|=133376,this._readableState.updateNextTick()),"readable"===e&&(this._duplexState|=4096,this._readableState.updateNextTick())),null!==this._writableState&&"drain"===e&&(this._duplexState|=Dn,this._writableState.updateNextTick())}var or=function(e){"use strict";(0,E.default)(n,e);var t=(0,I.default)(n);function n(e){var r;return(0,_.default)(this,n),(r=t.call(this,e))._duplexState|=8519681,r._readableState=new 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e=this;this._debug("_needsNegotiation"),this._batchedNegotiation||(this._batchedNegotiation=!0,queueMicrotask((function(){e._batchedNegotiation=!1,e.initiator||!e._firstNegotiation?(e._debug("starting batched negotiation"),e.negotiate()):e._debug("non-initiator initial negotiation request discarded"),e._firstNegotiation=!1})))}},{key:"negotiate",value:function(){var e=this;if(!this._destroying){if(this.destroyed)throw vr(Error("cannot negotiate after peer is destroyed"),"ERR_DESTROYED");this.initiator?this._isNegotiating?(this._queuedNegotiation=!0,this._debug("already negotiating, queueing")):(this._debug("start negotiation"),setTimeout((function(){e._createOffer()}),0)):this._isNegotiating?(this._queuedNegotiation=!0,this._debug("already negotiating, queueing")):(this._debug("requesting negotiation from 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e=this;this.destroyed||this._pc.createOffer(this.offerOptions).then((function(t){if(!e.destroyed){e.trickle||e.allowHalfTrickle||(t.sdp=Tr(t.sdp)),t.sdp=e.sdpTransform(t.sdp);var n=function(){if(!e.destroyed){var n=e._pc.localDescription||t;e._debug("signal"),e.emit("signal",{type:n.type,sdp:n.sdp})}};e._pc.setLocalDescription(t).then((function(){e._debug("createOffer success"),e.destroyed||(e.trickle||e._iceComplete?n():e.once("_iceComplete",n))})).catch((function(t){e.__destroy(vr(t,"ERR_SET_LOCAL_DESCRIPTION"))}))}})).catch((function(t){e.__destroy(vr(t,"ERR_CREATE_OFFER"))}))}},{key:"_createAnswer",value:function(){var e=this;this.destroyed||this._pc.createAnswer(this.answerOptions).then((function(t){if(!e.destroyed){e.trickle||e.allowHalfTrickle||(t.sdp=Tr(t.sdp)),t.sdp=e.sdpTransform(t.sdp);var n=function(){var n,r;if(!e.destroyed){var i=e._pc.localDescription||t;e._debug("signal"),e.emit("signal",{type:i.type,sdp:i.sdp}),e.initiator||null===(r=(n=e)._requestMissingTransceivers)||void 0===r||r.call(n)}};e._pc.setLocalDescription(t).then((function(){e.destroyed||(e.trickle||e._iceComplete?n():e.once("_iceComplete",n))})).catch((function(t){e.__destroy(vr(t,"ERR_SET_LOCAL_DESCRIPTION"))}))}})).catch((function(t){e.__destroy(vr(t,"ERR_CREATE_ANSWER"))}))}},{key:"_onConnectionStateChange",value:function(){this.destroyed||this._destroying||"failed"===this._pc.connectionState&&this.__destroy(vr(Error("Connection failed."),"ERR_CONNECTION_FAILURE"))}},{key:"_onIceStateChange",value:function(){if(!this.destroyed){var e=this._pc.iceConnectionState,t=this._pc.iceGatheringState;this._debug("iceStateChange (connection: %s) (gathering: %s)",e,t),this.emit("iceStateChange",e,t),"connected"!==e&&"completed"!==e||(this._pcReady=!0,this._maybeReady()),"failed"===e&&this.__destroy(vr(Error("Ice connection 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t=function(){e.destroyed||e._destroying||e.getStats((function(n,r){if(!e.destroyed&&!e._destroying){n&&(r=[]);var i={},a={},o={},u=!1;r.forEach((function(e){"remotecandidate"!==e.type&&"remote-candidate"!==e.type||(i[e.id]=e),"localcandidate"!==e.type&&"local-candidate"!==e.type||(a[e.id]=e),"candidatepair"!==e.type&&"candidate-pair"!==e.type||(o[e.id]=e)}));var s=function(t){u=!0;var n=a[t.localCandidateId];n&&(n.ip||n.address)?(e.localAddress=n.ip||n.address,e.localPort=Number(n.port)):n&&n.ipAddress?(e.localAddress=n.ipAddress,e.localPort=Number(n.portNumber)):"string"==typeof t.googLocalAddress&&(n=t.googLocalAddress.split(":"),e.localAddress=n[0],e.localPort=Number(n[1])),e.localAddress&&(e.localFamily=e.localAddress.includes(":")?"IPv6":"IPv4");var r=i[t.remoteCandidateId];r&&(r.ip||r.address)?(e.remoteAddress=r.ip||r.address,e.remotePort=Number(r.port)):r&&r.ipAddress?(e.remoteAddress=r.ipAddress,e.remotePort=Number(r.portNumber)):"string"==typeof t.googRemoteAddress&&(r=t.googRemoteAddress.split(":"),e.remoteAddress=r[0],e.remotePort=Number(r[1])),e.remoteAddress&&(e.remoteFamily=e.remoteAddress.includes(":")?"IPv6":"IPv4"),e._debug("connect local: %s:%s remote: %s:%s",e.localAddress,e.localPort,e.remoteAddress,e.remotePort)};if(r.forEach((function(e){"transport"===e.type&&e.selectedCandidatePairId&&s(o[e.selectedCandidatePairId]),("googCandidatePair"===e.type&&"true"===e.googActiveConnection||("candidatepair"===e.type||"candidate-pair"===e.type)&&e.selected)&&s(e)})),u||Object.keys(o).length&&!Object.keys(a).length){if(e._connecting=!1,e._connected=!0,e._chunk){try{e.send(e._chunk)}catch(n){return e.__destroy(vr(n,"ERR_DATA_CHANNEL"))}e._chunk=null,e._debug('sent chunk from "write before connect"');var c=e._cb;e._cb=null,c(null)}"number"!=typeof e._channel.bufferedAmountLowThreshold&&(e._interval=setInterval((function(){return e._onInterval()}),150),e._interval.unref&&e._interval.unref()),e._debug("connect"),e.emit("connect")}else setTimeout(t,100)}}))};t()}}},{key:"_onInterval",value:function(){!this._cb||!this._channel||this._channel.bufferedAmount>Ar||this._onChannelBufferedAmountLow()}},{key:"_onSignalingStateChange",value:function(){var e=this;this.destroyed||("stable"===this._pc.signalingState&&(this._isNegotiating=!1,this._debug("flushing sender queue",this._sendersAwaitingStable),this._sendersAwaitingStable.forEach((function(t){e._pc.removeTrack(t),e._queuedNegotiation=!0})),this._sendersAwaitingStable=[],this._queuedNegotiation?(this._debug("flushing negotiation queue"),this._queuedNegotiation=!1,this._needsNegotiation()):(this._debug("negotiated"),this.emit("negotiated"))),this._debug("signalingStateChange 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