danfojs/lib/bundle.esm.js

JavaScript library providing high performance, intuitive, and easy to use data structures for manipulating and processing structured data.

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Em.fromString(e,!0,16)}var T9=Gb("c3a5c85c97cb3127"),Am=Gb("b492b66fbe98f273"),rf=Gb("9ae16a3b2f90404f");function c4(e){return e.xor(e.shru(47))}function A9(e,t,r){var n=e.slice(t,t+r);return Em.fromBytes(Array.from(n),!0,!0)}function Js(e,t){return A9(e,t,8)}function fL(e,t){return A9(e,t,4)}function uc(e,t){return t===0?e:e.shru(t).or(e.shl(64-t))}function hv(e,t,r){r===void 0&&(r=Gb("9ddfea08eb382d69"));var n=e.xor(t).mul(r);n=n.xor(n.shru(47));var a=t.xor(n).mul(r);return a=a.xor(a.shru(47)),a=a.mul(r),a}function ele(e,t,r,n,a,o){a=a.add(e),o=uc(o.add(a).add(n),21);var s=a;return a=a.add(t),a=a.add(r),o=o.add(uc(a,44)),[a.add(n),o.add(s)]}function n3(e,t,r,n){return ele(Js(e,t),Js(e,t+8),Js(e,t+16),Js(e,t+24),r,n)}function tle(e,t){if(t===void 0&&(t=e.length),t>=8){var r=rf.add(t*2),n=Js(e,0).add(rf),a=Js(e,t-8),o=uc(a,37).mul(r).add(n),s=uc(n,25).add(a).mul(r);return hv(o,s,r)}if(t>=4){var r=rf.add(t*2),n=fL(e,0);return hv(n.shl(3).add(t),fL(e,t-4),r)}if(t>0){var 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lle={__proto__:null,createScalarValue:ile,toTypedArray:T3,now:Ob,fetch:sle,encodeString:$b,decodeString:h3,shuffle:AL,shuffleCombo:hse,clamp:Nb,nearestLargerEven:pse,swap:s3,sum:dse,randUniform:vse,distSquared:mse,assert:Dr,assertShapesMatch:nf,assertNonNull:Bm,flatten:Fm,sizeFromShape:Ml,isScalarShape:gse,arraysEqual:mv,isInt:Q1,tanh:yse,sizeToSquarishShape:xse,createShuffledIndices:bse,rightPad:Cb,repeatedTry:_se,inferFromImplicitShape:wse,parseAxisParam:Wb,squeezeShape:SL,getTypedArrayFromDType:EL,getArrayFromDType:DL,checkConversionForErrors:CL,isValidDtype:ML,hasEncodingLoss:kse,isTypedArray:Gc,bytesPerElement:r4,bytesFromStringArray:IL,isString:cv,isBoolean:NL,isNumber:FL,inferDtype:w3,isFunction:dv,nearestDivisor:l3,computeStrides:ay,toNestedArray:q1,makeOnesTypedArray:E4,makeZerosTypedArray:k3,makeZerosNestedTypedArray:Tse,assertNonNegativeIntegerDimensions:D4,locToIndex:Ase,indexToLoc:Sse,isPromise:C4,hexToLong:Gb,fingerPrint64:ale},ule=function(){function e(t,r){this.backendTimer=t,this.logger=r,r==null&&(this.logger=new fle)}return e.prototype.profileKernel=function(t,r,n){var a,o,s,i=function(){s=n()},l,u=Ob();if(this.backendTimer.timerAvailable())l=this.backendTimer.time(i);else{i();try{for(var c=Qf(s),f=c.next();!f.done;f=c.next()){var h=f.value;h.dataSync()}}catch(m){a={error:m}}finally{try{f&&!f.done&&(o=c.return)&&o.call(c)}finally{if(a)throw a.error}}l=Promise.resolve({kernelMs:Ob()-u})}if(So().getBool("CHECK_COMPUTATION_FOR_ERRORS"))for(var p=function(m){var g=s[m];g.data().then(function(x){cle(x,g.dtype,t)})},d=0;d<s.length;d++)p(d);var v={kernelName:t,outputs:s,inputs:r,timeMs:l.then(function(m){return m.kernelMs}),extraInfo:l.then(function(m){return m.getExtraProfileInfo!=null?m.getExtraProfileInfo():""})};return v},e.prototype.logKernelProfile=function(t){var r=this,n=t.kernelName,a=t.outputs,o=t.timeMs,s=t.inputs,i=t.extraInfo;a.forEach(function(l){Promise.all([l.data(),o,i]).then(function(u){r.logger.logKernelProfile(n,l,u[0],u[1],s,u[2])})})},e}();function cle(e,t,r){if(t!=="float32")return!1;for(var n=0;n<e.length;n++){var a=e[n];if(isNaN(a)||!isFinite(a))return console.warn("Found "+a+" in the result of '"+r+"'"),!0}return!1}var fle=function(){function e(){}return e.prototype.logKernelProfile=function(t,r,n,a,o,s){var i=typeof a=="number"?Cb(a+"ms",9):a.error,l=Cb(t,25),u=r.rank,c=r.size,f=Cb(r.shape.toString(),14),h="";for(var p in o){var d=o[p];if(d!=null){var v=d.shape||r.shape,m=v.length;h+=p+": "+m+"D "+(m>0?v:"")+" "}}console.log("%c"+l+"	%c"+i+"	%c"+u+"D "+f+"	%c"+c+"	%c"+h+"	%c"+s,"font-weight:bold","color:red","color:blue","color: orange","color: green","color: steelblue")},e}();function hle(e,t,r){for(var n={},a={},o=0;o<t.length;o++)n[t[o].id]=!0;for(var o=0;o<e.length;o++){var s=e[o],i=s.inputs;for(var l in i){for(var u=i[l],c=!1,f=0;f<t.length;f++)if(n[u.id]){s.outputs.forEach(function(b){return n[b.id]=!0}),c=!0,a[s.id]=!0;break}if(c)break}}var h={};h[r.id]=!0;for(var p={},o=e.length-1;o>=0;o--)for(var s=e[o],i=s.inputs,f=0;f<s.outputs.length;f++)if(h[s.outputs[f].id]){for(var l in i)h[i[l].id]=!0,p[s.id]=!0;break}for(var d=[],o=0;o<e.length;o++){var s=e[o];if(a[s.id]&&p[s.id]){var v={};for(var l in s.inputs){var m=s.inputs[l];n[m.id]&&(v[l]=m)}var g=Object.assign({},s);g.inputs=v,g.outputs=s.outputs,d.push(g)}}return d}function ple(e,t,r,n){for(var a=function(s){var i=t[s],l=[];if(i.outputs.forEach(function(h){var p=e[h.id];p!=null?l.push(p):l.push(null)}),i.gradient==null)throw new Error("Cannot compute gradient: gradient function not found "+("for "+i.kernelName+"."));var u=i.gradient(l),c=function(h){if(!(h in u))throw new Error("Cannot backprop through input "+h+". "+("Available gradients found: "+Object.keys(u)+"."));var p=r(function(){return u[h]()});if(p.dtype!=="float32")throw new Error("Error in gradient for op "+i.kernelName+". The gradient of input "+(h+" must have 'float32' dtype, but has '"+p.dtype+"'"));var d=i.inputs[h];if(!mv(p.shape,d.shape))throw new Error("Error in gradient for op "+i.kernelName+". The gradient of input "+("'"+h+"' has shape '"+p.shape+"', which does not match ")+("the shape of the input '"+d.shape+"'"));if(e[d.id]==null)e[d.id]=p;else{var v=e[d.id];e[d.id]=n(v,p),v.dispose()}};for(var f in i.inputs)c(f)},o=t.length-1;o>=0;o--)a(o)}var hL=20,Sb=3,YE=7;function dle(e,t,r,n){var a=ay(t),o=vle(e,t,r,a),s=t.length,i=a3(e,t,r,a,o),l=["Tensor"];return n&&(l.push("  dtype: "+r),l.push("  rank: "+s),l.push("  shape: ["+t+"]"),l.push("  values:")),l.push(i.map(function(u){return"    "+u}).join(`
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`;return g[g.length-1]=" "+g[g.length-1]+"]"+(o?"":_),g}function Db(e){for(var t=[],r=0;r<e.length;r+=2)t.push([e[r],e[r+1]]);return t}var p3=function(){function e(t,r,n){var a=this;if(this.dtype=r,this.shape=t.slice(),this.size=Ml(t),n!=null){var o=n.length;Dr(o===this.size,function(){return"Length of values '"+o+"' does not match the size "+("inferred by the shape '"+a.size+"'.")})}if(r==="complex64")throw new Error("complex64 dtype TensorBuffers are not supported. Please create a TensorBuffer for the real and imaginary parts separately and call tf.complex(real, imag).");this.values=n||DL(r,this.size),this.strides=ay(t)}return e.prototype.set=function(t){for(var r=this,n=[],a=1;a<arguments.length;a++)n[a-1]=arguments[a];n.length===0&&(n=[0]),Dr(n.length===this.rank,function(){return"The number of provided coordinates ("+n.length+") must "+("match the rank ("+r.rank+")")});var o=this.locToIndex(n);this.values[o]=t},e.prototype.get=function(){for(var t,r,n=[],a=0;a<arguments.length;a++)n[a]=arguments[a];n.length===0&&(n=[0]);var o=0;try{for(var s=Qf(n),i=s.next();!i.done;i=s.next()){var l=i.value;if(l<0||l>=this.shape[o]){var u="Requested out of range element at "+n+". "+("  Buffer shape="+this.shape);throw new Error(u)}o++}}catch(h){t={error:h}}finally{try{i&&!i.done&&(r=s.return)&&r.call(s)}finally{if(t)throw t.error}}for(var c=n[n.length-1],f=0;f<n.length-1;++f)c+=this.strides[f]*n[f];return this.values[c]},e.prototype.locToIndex=function(t){if(this.rank===0)return 0;if(this.rank===1)return t[0];for(var r=t[t.length-1],n=0;n<t.length-1;++n)r+=this.strides[n]*t[n];return r},e.prototype.indexToLoc=function(t){if(this.rank===0)return[];if(this.rank===1)return[t];for(var r=new Array(this.shape.length),n=0;n<r.length-1;++n)r[n]=Math.floor(t/this.strides[n]),t-=r[n]*this.strides[n];return r[r.length-1]=t,r},Object.defineProperty(e.prototype,"rank",{get:function(){return this.shape.length},enumerable:!0,configurable:!0}),e.prototype.toTensor=function(){return Xp().makeTensor(this.values,this.shape,this.dtype)},e}(),Xp=null,G1=null;function mle(e){Xp=e}function gle(e){G1=e}var Du=function(){function e(t,r,n,a){this.kept=!1,this.isDisposedInternal=!1,this.shape=t.slice(),this.dtype=r||"float32",this.size=Ml(t),this.strides=ay(t),this.dataId=n,this.id=a,this.rankType=this.rank<5?this.rank.toString():"higher"}return Object.defineProperty(e.prototype,"rank",{get:function(){return this.shape.length},enumerable:!0,configurable:!0}),e.prototype.buffer=function(){return xi(this,void 0,void 0,function(){var t;return bi(this,function(r){switch(r.label){case 0:return[4,this.data()];case 1:return t=r.sent(),[2,G1.buffer(this.shape,this.dtype,t)]}})})},e.prototype.bufferSync=function(){return G1.buffer(this.shape,this.dtype,this.dataSync())},e.prototype.array=function(){return xi(this,void 0,void 0,function(){var t;return bi(this,function(r){switch(r.label){case 0:return[4,this.data()];case 1:return t=r.sent(),[2,q1(this.shape,t,this.dtype==="complex64")]}})})},e.prototype.arraySync=function(){return q1(this.shape,this.dataSync(),this.dtype==="complex64")},e.prototype.data=function(){return xi(this,void 0,void 0,function(){var t,r;return bi(this,function(n){switch(n.label){case 0:return this.throwIfDisposed(),t=Xp().read(this.dataId),this.dtype!=="string"?[3,2]:[4,t];case 1:r=n.sent();try{return[2,r.map(function(a){return h3(a)})]}catch{throw new Error("Failed to decode the string bytes into utf-8. To get the original bytes, call tensor.bytes().")}n.label=2;case 2:return[2,t]}})})},e.prototype.dataToGPU=function(t){return this.throwIfDisposed(),Xp().readToGPU(this.dataId,t)},e.prototype.dataSync=function(){this.throwIfDisposed();var t=Xp().readSync(this.dataId);if(this.dtype==="string")try{return t.map(function(r){return h3(r)})}catch{throw new Error("Failed to decode the string bytes into utf-8. To get the original bytes, call tensor.bytes().")}return t},e.prototype.bytes=function(){return xi(this,void 0,void 0,function(){var t;return bi(this,function(r){switch(r.label){case 0:return this.throwIfDisposed(),[4,Xp().read(this.dataId)];case 1:return t=r.sent(),this.dtype==="string"?[2,t]:[2,new Uint8Array(t.buffer)]}})})},e.prototype.dispose=function(){this.isDisposed||(Xp().disposeTensor(this),this.isDisposedInternal=!0)},Object.defineProperty(e.prototype,"isDisposed",{get:function(){return this.isDisposedInternal},enumerable:!0,configurable:!0}),e.prototype.throwIfDisposed=function(){if(this.isDisposed)throw new Error("Tensor is disposed.")},e.prototype.print=function(t){return t===void 0&&(t=!1),G1.print(this,t)},e.prototype.clone=function(){return this.throwIfDisposed(),G1.clone(this)},e.prototype.toString=function(t){t===void 0&&(t=!1);var r=this.dataSync();return dle(r,this.shape,this.dtype,t)},e.prototype.cast=function(t){return this.throwIfDisposed(),G1.cast(this,t)},e.prototype.variable=function(t,r,n){return t===void 0&&(t=!0),this.throwIfDisposed(),Xp().makeVariable(this,t,r,n)},e}();Object.defineProperty(Du,Symbol.hasInstance,{value:function(e){return!!e&&e.data!=null&&e.dataSync!=null&&e.throwIfDisposed!=null}});function yle(){return M4("Tensor",function(){return Du})}yle();var Pb=function(e){y0(t,e);function t(r,n,a,o){var s=e.call(this,r.shape,r.dtype,r.dataId,o)||this;return s.trainable=n,s.name=a,s}return t.prototype.assign=function(r){if(r.dtype!==this.dtype)throw new Error("dtype of the new value ("+r.dtype+") and "+("previous value ("+this.dtype+") must match"));if(!mv(r.shape,this.shape))throw new Error("shape of the new value ("+r.shape+") and "+("previous value ("+this.shape+") must match"));Xp().disposeTensor(this),this.dataId=r.dataId,Xp().incRef(this,null)},t.prototype.dispose=function(){Xp().disposeVariable(this),this.isDisposedInternal=!0},t}(Du);Object.defineProperty(Pb,Symbol.hasInstance,{value:function(e){return e instanceof Du&&e.assign!=null&&e.assign instanceof Function}});Gt.Rank=void 0;(function(e){e.R0="R0",e.R1="R1",e.R2="R2",e.R3="R3",e.R4="R4",e.R5="R5",e.R6="R6"})(Gt.Rank||(Gt.Rank={}));var f4;(function(e){e.float32="float32",e.int32="int32",e.bool="int32",e.complex64="complex64"})(f4||(f4={}));var h4;(function(e){e.float32="float32",e.int32="int32",e.bool="bool",e.complex64="complex64"})(h4||(h4={}));var p4;(function(e){e.float32="float32",e.int32="float32",e.bool="float32",e.complex64="complex64"})(p4||(p4={}));var d4;(function(e){e.float32="complex64",e.int32="complex64",e.bool="complex64",e.complex64="complex64"})(d4||(d4={}));var xle={float32:p4,int32:f4,bool:h4,complex64:d4};function A3(e,t){if(e==="string"||t==="string"){if(e==="string"&&t==="string")return"string";throw new Error("Can not upcast "+e+" with "+t)}return xle[e][t]}function ble(e){return A3(e,"int32")}function Bl(e,t){if(e.dtype===t.dtype)return[e,t];var r=A3(e.dtype,t.dtype);return[e.cast(r),t.cast(r)]}function E9(e,t){Dr(e.dtype===t.dtype,function(){return"The dtypes of the first("+e.dtype+") and"+(" second("+t.dtype+") input must match")})}function _le(e,t){return t.some(function(r){return r.id===e.id})}function R4(e){var t=[],r=new Set;return D9(e,t,r),t}function D9(e,t,r){if(e!=null){if(e instanceof Du){t.push(e);return}if(!!wle(e)){var n=e;for(var a in n){var o=n[a];r.has(o)||(r.add(o),D9(o,t,r))}}}}function wle(e){return Array.isArray(e)||typeof e=="object"}var kle={__proto__:null,makeTypesMatch:Bl,assertTypesMatch:E9,isTensorInList:_le,getTensorsInContainer:R4};function ZE(e){return e.kernelName!=null}var pL=function(){function e(){this.registeredVariables={},this.nextTapeNodeId=0,this.numBytes=0,this.numTensors=0,this.numStringTensors=0,this.numDataBuffers=0,this.gradientDepth=0,this.kernelDepth=0,this.scopeStack=[],this.numDataMovesStack=[],this.nextScopeId=0,this.tensorInfo=new WeakMap,this.profiling=!1,this.activeProfile={newBytes:0,newTensors:0,peakBytes:0,kernels:[],result:null,get kernelNames(){return Array.from(new Set(this.kernels.map(function(t){return t.name})))}}}return e.prototype.dispose=function(){for(var t in this.registeredVariables)this.registeredVariables[t].dispose()},e}(),z4=function(){function e(t){this.ENV=t,this.registry={},this.registryFactory={},this.pendingBackendInitId=0,this.state=new pL}return e.prototype.ready=function(){return xi(this,void 0,void 0,function(){var t,r,n,a;return bi(this,function(o){switch(o.label){case 0:if(this.pendingBackendInit!=null)return[2,this.pendingBackendInit.then(function(){})];if(this.backendInstance!=null)return[2];t=this.getSortedBackends(),r=0,o.label=1;case 1:return r<t.length?(n=t[r],[4,this.initializeBackend(n).success]):[3,5];case 2:return a=o.sent(),a?[4,this.setBackend(n)]:[3,4];case 3:return o.sent(),[2];case 4:return r++,[3,1];case 5:throw new Error("Could not initialize any backends, all backend initializations failed.")}})})},Object.defineProperty(e.prototype,"backend",{get:function(){if(this.pendingBackendInit!=null)throw new Error("Backend '"+this.backendName+"' has not yet been initialized. Make sure to await tf.ready() or await tf.setBackend() before calling other methods");if(this.backendInstance==null){var t=this.initializeBackendsAndReturnBest(),r=t.name,n=t.asyncInit;if(n)throw new Error("The highest priority backend '"+r+"' has not yet been initialized. Make sure to await tf.ready() or await tf.setBackend() before calling other methods");this.setBackend(r)}return this.backendInstance},enumerable:!0,configurable:!0}),e.prototype.backendNames=function(){return Object.keys(this.registryFactory)},e.prototype.findBackend=function(t){if(!(t in this.registry))if(t in this.registryFactory){var r=this.initializeBackend(t).asyncInit;if(r)return null}else return null;return this.registry[t]},e.prototype.findBackendFactory=function(t){return t in this.registryFactory?this.registryFactory[t].factory:null},e.prototype.registerBackend=function(t,r,n){return n===void 0&&(n=1),t in this.registryFactory?(uv(t+" backend was already registered. Reusing existing backend factory."),!1):(this.registryFactory[t]={factory:r,priority:n},!0)},e.prototype.setBackend=function(t){return xi(this,void 0,void 0,function(){var r,n,a,o,s;return bi(this,function(i){switch(i.label){case 0:if(this.registryFactory[t]==null)throw new Error("Backend name '"+t+"' not found in registry");return this.backendName=t,this.registry[t]!=null?[3,4]:(this.backendInstance=null,r=this.initializeBackend(t),n=r.success,a=r.asyncInit,a?[4,n]:[3,2]);case 1:return s=i.sent(),[3,3];case 2:s=n,i.label=3;case 3:if(o=s,!o)return[2,!1];i.label=4;case 4:return this.backendInstance=this.registry[t],this.setupRegisteredKernels(),this.profiler=new ule(this.backendInstance),[2,!0]}})})},e.prototype.setupRegisteredKernels=function(){var t=this,r=c3(this.backendName);r.forEach(function(n){n.setupFunc!=null&&n.setupFunc(t.backendInstance)})},e.prototype.disposeRegisteredKernels=function(t){var r=this,n=c3(t);n.forEach(function(a){a.disposeFunc!=null&&a.disposeFunc(r.registry[t])})},e.prototype.initializeBackend=function(t){var r=this,n=this.registryFactory[t];if(n==null)throw new Error("Cannot initialize backend "+t+", no registration found.");try{var a=n.factory();if(a&&!(a instanceof TL)&&typeof a.then=="function"){var o=++this.pendingBackendInitId,s=a.then(function(i){return o<r.pendingBackendInitId?!1:(r.registry[t]=i,r.pendingBackendInit=null,!0)}).catch(function(i){return o<r.pendingBackendInitId||(r.pendingBackendInit=null,uv("Initialization of backend "+t+" failed"),uv(i.stack||i.message)),!1});return this.pendingBackendInit=s,{success:s,asyncInit:!0}}else return this.registry[t]=a,{success:!0,asyncInit:!1}}catch(i){return uv("Initialization of backend "+t+" failed"),uv(i.stack||i.message),{success:!1,asyncInit:!1}}},e.prototype.removeBackend=function(t){if(!(t in this.registryFactory))throw new Error(t+" backend not found in registry");this.backendName===t&&this.pendingBackendInit!=null&&this.pendingBackendInitId++,t in this.registry&&(this.disposeRegisteredKernels(t),this.registry[t].dispos