@tensorflow/tfjs-data - npm Package Compare versions

Comparing version 1.0.3 to 1.0.4

dist/tf-data.esm.js

@@ -17,3 +17,3 @@ /**
  */
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Object.setPrototypeOf(e,Object.getPrototypeOf(t)),Object.defineProperties(e,r(t)),e}}),util_1=util$1.format,util_2=util$1.deprecate,util_3=util$1.debuglog,util_4=util$1.inspect,util_5=util$1.isArray,util_6=util$1.isBoolean,util_7=util$1.isNull,util_8=util$1.isNullOrUndefined,util_9=util$1.isNumber,util_10=util$1.isString,util_11=util$1.isSymbol,util_12=util$1.isUndefined,util_13=util$1.isRegExp,util_14=util$1.isObject,util_15=util$1.isDate,util_16=util$1.isError,util_17=util$1.isFunction,util_18=util$1.isPrimitive,util_19=util$1.isBuffer,util_20=util$1.log,util_21=util$1.inherits,util_22=util$1._extend,util_23=util$1.promisify,util_24=util$1.callbackify;function deepMapInternal(t,e,r,n){if(void 0===r&&(r=new Map),void 0===n&&(n=new Set),null==t)return null;if(n.has(t))throw new Error("Circular references are not supported.");if(r.has(t))return r.get(t);var i=e(t);if(i.recurse&&null!==i.value)throw new Error("A deep map function may not return both a value and recurse=true.");if(i.recurse){if(isIterable(t)){var o=Array.isArray(t)?[]:{};for(var a in n.add(t),t){var u=deepMapInternal(t[a],e,r,n);o[a]=u}return n.delete(t),o}throw new Error("Can't recurse into non-iterable type: "+t)}return r.set(t,i.value),i.value}function deepZip(t,e){return void 0===e&&(e=zipToList),deepZipInternal(t,e)}function deepZipInternal(t,e,r){void 0===r&&(r=new Set);var n=t[0];if(r.has(n))throw new Error("Circular references are not supported.");var i=e(t);if(i.recurse&&null!==i.value)throw new Error("A deep zip function may not return both a value and recurse=true.");if(i.recurse){if(isIterable(n)){var o=Array.isArray(n)?[]:{};r.add(n);var a=function(n){var i=deepZipInternal(t.map(function(t){return t[n]}),e,r);o[n]=i};for(var u in n)a(u);return r.delete(n),o}throw new Error("Can't recurse into non-iterable type: "+n)}return i.value}function zipToList(t){return null===t?null:isIterable(t[0])?{value:null,recurse:!0}:{value:t,recurse:!1}}function deepMapAndAwaitAll(t,e){return __awaiter(this,void 0,void 0,function(){var r,n,i,o,a,u;return __generator(this,function(s){switch(s.label){case 0:r=new Map,deepMapInternal(t,e,r),n=0,i=Array.from(r.keys()),s.label=1;case 1:return n<i.length?(o=i[n],(a=r.get(o))instanceof Promise?[4,a]:[3,3]):[3,4];case 2:u=s.sent(),r.set(o,u),s.label=3;case 3:return n++,[3,1];case 4:return[2,deepMapInternal(t,e,r)]}})})}function isIterable(t){return null!=t&&(Array.isArray(t)||"object"==typeof t&&!(t instanceof Tensor))}function canTensorify(t){return null==t||util_18(t)||Array.isArray(t)||"object"==typeof t&&t instanceof Tensor||util.isTypedArray(t)}var RingBuffer=function(){function t(t){if(this.capacity=t,this.begin=0,this.end=0,null==t)throw new RangeError("Can't create a ring buffer of unknown capacity.");if(t<1)throw new RangeError("Can't create ring buffer of capacity < 1.");this.data=new Array(t),this.doubledCapacity=2*t}return t.prototype.wrap=function(t){for(;t<0;)t+=this.doubledCapacity;return t%this.doubledCapacity},t.prototype.get=function(t){if(t<0)throw new RangeError("Can't get item at a negative index.");return this.data[t%this.capacity]},t.prototype.set=function(t,e){if(t<0)throw new RangeError("Can't set item at a negative index.");this.data[t%this.capacity]=e},t.prototype.length=function(){var t=this.end-this.begin;return t<0&&(t=this.doubledCapacity+t),t},t.prototype.isFull=function(){return this.length()===this.capacity},t.prototype.isEmpty=function(){return 0===this.length()},t.prototype.push=function(t){if(this.isFull())throw new RangeError("Ring buffer is full.");this.set(this.end,t),this.end=this.wrap(this.end+1)},t.prototype.pushAll=function(t){for(var e=0,r=t;e<r.length;e++){var n=r[e];this.push(n)}},t.prototype.pop=function(){if(this.isEmpty())throw new RangeError("Ring buffer is empty.");this.end=this.wrap(this.end-1);var t=this.get(this.end);return this.set(this.end,void 0),t},t.prototype.unshift=function(t){if(this.isFull())throw new RangeError("Ring buffer is full.");this.begin=this.wrap(this.begin-1),this.set(this.begin,t)},t.prototype.shift=function(){if(this.isEmpty())throw new RangeError("Ring buffer is empty.");var t=this.get(this.begin);return this.set(this.begin,void 0),this.begin=this.wrap(this.begin+1),t},t.prototype.shuffleExcise=function(t){if(this.isEmpty())throw new RangeError("Ring buffer is empty.");var e=this.wrap(this.begin+t),r=this.get(e);return this.set(e,this.pop()),r},t}(),GrowingRingBuffer=function(t){function e(){return t.call(this,e.INITIAL_CAPACITY)||this}return __extends(e,t),e.prototype.isFull=function(){return!1},e.prototype.push=function(e){t.prototype.isFull.call(this)&&this.expand(),t.prototype.push.call(this,e)},e.prototype.unshift=function(e){t.prototype.isFull.call(this)&&this.expand(),t.prototype.unshift.call(this,e)},e.prototype.expand=function(){for(var t=2*this.capacity,e=new Array(t),r=this.length(),n=0;n<r;n++)e[n]=this.get(this.wrap(this.begin+n));this.data=e,this.capacity=t,this.doubledCapacity=2*this.capacity,this.begin=0,this.end=r},e.INITIAL_CAPACITY=32,e}(RingBuffer);function iteratorFromItems(t){return new ArrayIterator(t)}function iteratorFromFunction(t){return new FunctionCallIterator(t)}function iteratorFromConcatenated(t,e){return new ChainedIterator(t,e)}function iteratorFromZipped(t,e){return void 0===e&&(e=ZipMismatchMode.FAIL),new ZipIterator(t,e)}var ZipMismatchMode,LazyIterator=function(){function t(){}return t.prototype.toArray=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){switch(r.label){case 0:return t=[],[4,this.next()];case 1:e=r.sent(),r.label=2;case 2:return e.done?[3,4]:(t.push(e.value),[4,this.next()]);case 3:return e=r.sent(),[3,2];case 4:return[2,t]}})})},t.prototype.toArrayForTest=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r;return __generator(this,function(n){switch(n.label){case 0:return t=this.prefetch(100),e=[],[4,t.next()];case 1:r=n.sent(),n.label=2;case 2:return r.done?[3,4]:(e.push(r.value),[4,t.next()]);case 3:return r=n.sent(),[3,2];case 4:return[2,e]}})})},t.prototype.resolveFully=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return[4,this.next()];case 1:t=e.sent(),e.label=2;case 2:return t.done?[3,4]:[4,this.next()];case 3:return t=e.sent(),[3,2];case 4:return[2]}})})},t.prototype.resolveWhile=function(t){return __awaiter(this,void 0,void 0,function(){var e,r;return __generator(this,function(n){switch(n.label){case 0:return[4,this.next()];case 1:e=n.sent(),r=t(e.value),n.label=2;case 2:return e.done||!r?[3,4]:[4,this.next()];case 3:return e=n.sent(),r=t(e.value),[3,2];case 4:return[2]}})})},t.prototype.handleErrors=function(t){return new ErrorHandlingLazyIterator(this,t)},t.prototype.filter=function(t){return new FilterIterator(this,t)},t.prototype.map=function(t){return new MapIterator(this,t)},t.prototype.mapAsync=function(t){return new AsyncMapIterator(this,t)},t.prototype.serialMapAsync=function(t){return new AsyncMapIterator(this,t).serial()},t.prototype.flatmap=function(t){return new FlatmapIterator(this,t)},t.prototype.forEachAsync=function(t){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){return[2,this.map(t).resolveFully()]})})},t.prototype.serialForEach=function(t){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){return[2,this.serialMapAsync(t).resolveWhile(function(t){return!0===t})]})})},t.prototype.rowMajorBatch=function(t,e){return void 0===e&&(e=!0),new RowMajorBatchIterator(this,t,e)},t.prototype.columnMajorBatch=function(t,e,r){return void 0===e&&(e=!0),void 0===r&&(r=zipToList),this.rowMajorBatch(t,e).map(function(t){return deepZip(t,r)})},t.prototype.concatenate=function(t,e){return new ChainedIterator(iteratorFromItems([this,t]),e)},t.prototype.take=function(t){return t<0||null==t?this:new TakeIterator(this,t)},t.prototype.skip=function(t){return t<0||null==t?this:new SkipIterator(this,t)},t.prototype.prefetch=function(t){return new PrefetchIterator(this,t)},t.prototype.shuffle=function(t,e){return new ShuffleIterator(this,t,e)},t.prototype.serial=function(){return new SerialIterator(this)},t}(),ArrayIterator=function(t){function e(e){var r=t.call(this)||this;return r.items=e,r.trav=0,r}return __extends(e,t),e.prototype.summary=function(){return"Array of "+this.items.length+" items"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){return this.trav>=this.items.length?[2,{value:null,done:!0}]:(t=this.items[this.trav],e=t instanceof Tensor?clone(t):t,this.trav++,[2,{value:e,done:!1}])})})},e}(LazyIterator),FunctionCallIterator=function(t){function e(e){var r=t.call(this)||this;return r.nextFn=e,r}return __extends(e,t),e.prototype.summary=function(){return"Function call"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){try{return[2,this.nextFn()]}catch(t){throw t.message="Error thrown while iterating through a dataset: "+t.message,t}return[2]})})},e}(LazyIterator),SerialIterator=function(t){function e(e){var r=t.call(this)||this;return r.upstream=e,r.lastRead=Promise.resolve({value:null,done:!1}),r}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Serial"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return[2,this.upstream.next()]})})},e}(LazyIterator),SkipIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.maxCount=r,n.count=0,n.lastRead=Promise.resolve({value:null,done:!1}),n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Skip"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return this.count++<this.maxCount?[4,this.upstream.next()]:[3,2];case 1:return(t=e.sent()).done?[2,t]:(dispose(t.value),[3,0]);case 2:return[2,this.upstream.next()]}})})},e}(LazyIterator),TakeIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.maxCount=r,n.count=0,n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Take"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return this.count++>=this.maxCount?[2,{value:null,done:!0}]:[2,this.upstream.next()]})})},e}(LazyIterator),RowMajorBatchIterator=function(t){function e(e,r,n){void 0===n&&(n=!0);var i=t.call(this)||this;return i.upstream=e,i.batchSize=r,i.enableSmallLastBatch=n,i.lastRead=Promise.resolve({value:null,done:!1}),i}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> RowMajorBatch"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){switch(r.label){case 0:t=[],r.label=1;case 1:return t.length<this.batchSize?[4,this.upstream.next()]:[3,3];case 2:return(e=r.sent()).done?this.enableSmallLastBatch&&t.length>0?[2,{value:t,done:!1}]:[2,{value:null,done:!0}]:(t.push(e.value),[3,1]);case 3:return[2,{value:t,done:!1}]}})})},e}(LazyIterator),FilterIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.predicate=r,n.lastRead=Promise.resolve({value:null,done:!1}),n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Filter"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return[4,this.upstream.next()];case 1:return(t=e.sent()).done||this.predicate(t.value)?[2,t]:(dispose(t.value),[3,0]);case 2:return[2]}})})},e}(LazyIterator),MapIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.transform=r,n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Map"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i,o,a;return __generator(this,function(u){switch(u.label){case 0:return[4,this.upstream.next()];case 1:if((t=u.sent()).done)return[2,{value:null,done:!0}];for(e=tensor_util.getTensorsInContainer(t.value),r=this.transform(t.value),n=tensor_util.getTensorsInContainer(r),i=0,o=e;i<o.length;i++)a=o[i],tensor_util.isTensorInList(a,n)||a.dispose();return[2,{value:r,done:!1}]}})})},e}(LazyIterator),ErrorHandlingLazyIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.handler=r,n.count=0,n.lastRead=Promise.resolve({value:null,done:!1}),n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> handleErrors"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:e.label=1;case 1:return e.trys.push([1,3,,4]),[4,this.upstream.next()];case 2:return[2,e.sent()];case 3:return t=e.sent(),this.handler(t)?[3,4]:[2,{value:null,done:!0}];case 4:return[3,0];case 5:return[2]}})})},e}(LazyIterator),AsyncMapIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.transform=r,n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> AsyncMap"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i,o,a;return __generator(this,function(u){switch(u.label){case 0:return[4,this.upstream.next()];case 1:return(t=u.sent()).done?[2,{value:null,done:!0}]:(e=tensor_util.getTensorsInContainer(t.value),[4,this.transform(t.value)]);case 2:for(r=u.sent(),n=tensor_util.getTensorsInContainer(r),i=0,o=e;i<o.length;i++)a=o[i],tensor_util.isTensorInList(a,n)||a.dispose();return[2,{value:r,done:!1}]}})})},e}(LazyIterator),OneToManyIterator=function(t){function e(){var e=t.call(this)||this;return e.outputQueue=new GrowingRingBuffer,e.lastRead=Promise.resolve({value:null,done:!1}),e}return __extends(e,t),e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:return 0!==this.outputQueue.length()?[3,2]:[4,this.pump()];case 1:return t.sent()?[3,0]:[2,{value:null,done:!0}];case 2:return[2,{value:this.outputQueue.shift(),done:!1}]}})})},e}(LazyIterator),FlatmapIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.transform=r,n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Flatmap"},e.prototype.pump=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i,o,a;return __generator(this,function(u){switch(u.label){case 0:return[4,this.upstream.next()];case 1:if((t=u.sent()).done)return[2,!1];for(e=tensor_util.getTensorsInContainer(t.value),r=this.transform(t.value),n=tensor_util.getTensorsInContainer(r),this.outputQueue.pushAll(r),i=0,o=e;i<o.length;i++)a=o[i],tensor_util.isTensorInList(a,n)||a.dispose();return[2,!0]}})})},e}(OneToManyIterator),ChainedIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.baseErrorHandler=r,n.lastRead=null,n.iterator=null,n.moreIterators=e,n}return __extends(e,t),e.prototype.summary=function(){return"TODO: fill in upstream of chained summaries -> Chained"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return this.lastRead=this.readFromChain(this.lastRead),[2,this.lastRead]})})},e.prototype.readFromChain=function(t){return __awaiter(this,void 0,void 0,function(){var e,r;return __generator(this,function(n){switch(n.label){case 0:return[4,t];case 1:return n.sent(),null!=this.iterator?[3,3]:[4,this.moreIterators.next()];case 2:if((e=n.sent()).done)return[2,{value:null,done:!0}];this.iterator=e.value,null!=this.baseErrorHandler&&(this.iterator=this.iterator.handleErrors(this.baseErrorHandler)),n.label=3;case 3:return[4,this.iterator.next()];case 4:return(r=n.sent()).done?(this.iterator=null,[2,this.readFromChain(t)]):[2,r]}})})},e}(LazyIterator);!function(t){t[t.FAIL=0]="FAIL",t[t.SHORTEST=1]="SHORTEST",t[t.LONGEST=2]="LONGEST"}(ZipMismatchMode||(ZipMismatchMode={}));var ZipIterator=function(t){function e(e,r){void 0===r&&(r=ZipMismatchMode.FAIL);var n=t.call(this)||this;return n.iterators=e,n.mismatchMode=r,n.count=0,n.currentPromise=null,n}return __extends(e,t),e.prototype.summary=function(){return"{TODO: fill in upstream of zip summaries} -> Zip"},e.prototype.nextState=function(t){return __awaiter(this,void 0,void 0,function(){function e(t){return t instanceof LazyIterator?{value:t.next().then(function(t){return r++,t.done&&n++,t.value}),recurse:!1}:{value:null,recurse:!0}}var r,n,i;return __generator(this,function(o){switch(o.label){case 0:return[4,t];case 1:return o.sent(),r=0,n=0,[4,deepMapAndAwaitAll(this.iterators,e)];case 2:if(i=o.sent(),r===n)return[2,{value:null,done:!0}];if(n>0)switch(this.mismatchMode){case ZipMismatchMode.FAIL:throw new Error("Zipped streams should have the same length. Mismatched at element "+this.count+".");case ZipMismatchMode.SHORTEST:return[2,{value:null,done:!0}];case ZipMismatchMode.LONGEST:}return this.count++,[2,{value:i,done:!1}]}})})},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:return this.currentPromise=this.nextState(this.currentPromise),[4,this.currentPromise];case 1:return[2,t.sent()]}})})},e}(LazyIterator),PrefetchIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.bufferSize=r,n.buffer=new RingBuffer(r),n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Prefetch"},e.prototype.refill=function(){for(;!this.buffer.isFull();){var t=this.upstream.next();this.buffer.push(t)}},e.prototype.next=function(){return this.refill(),this.buffer.shift()},e}(LazyIterator),ShuffleIterator=function(t){function e(e,r,n){var i=t.call(this,e,r)||this;return i.upstream=e,i.windowSize=r,i.upstreamExhausted=!1,i.random=seedrandom_1(n||util.now().toString()),i.lastRead=Promise.resolve({value:null,done:!1}),i}return __extends(e,t),e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.randomInt=function(t){return Math.floor(this.random()*t)},e.prototype.chooseIndex=function(){return this.randomInt(this.buffer.length())},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){switch(r.label){case 0:this.upstreamExhausted||this.refill(),r.label=1;case 1:return this.buffer.isEmpty()?[3,3]:(t=this.chooseIndex(),[4,this.buffer.shuffleExcise(t)]);case 2:return(e=r.sent()).done?(this.upstreamExhausted=!0,[3,1]):(this.refill(),[2,e]);case 3:return[2,{value:null,done:!0}]}})})},e}(PrefetchIterator),Dataset=function(){function t(){this.size=null}return t.prototype.batch=function(t,e){var r=this;void 0===e&&(e=!0);var n=this;return util.assert(t>0,function(){return"batchSize needs to be positive, but it is\n      "+t}),datasetFromIteratorFn(function(){return __awaiter(r,void 0,void 0,function(){return __generator(this,function(r){switch(r.label){case 0:return[4,n.iterator()];case 1:return[2,r.sent().columnMajorBatch(t,e,deepBatchConcat)]}})})},this.size===1/0||null==this.size?this.size:e?Math.ceil(this.size/t):Math.floor(this.size/t))},t.prototype.concatenate=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){var e,n;return __generator(this,function(i){switch(i.label){case 0:return[4,r.iterator()];case 1:return n=(e=i.sent()).concatenate,[4,t.iterator()];case 2:return[2,n.apply(e,[i.sent()])]}})})},this.size===1/0||t.size===1/0?1/0:null!=this.size&&null!=t.size?this.size+t.size:null)},t.prototype.filter=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().filter(function(e){return tidy(function(){return t(e)})})]}})})},this.size===1/0?1/0:null)},t.prototype.forEachAsync=function(t){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,this.iterator()];case 1:return[2,e.sent().forEachAsync(t)]}})})},t.prototype.forEach=function(t){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){return deprecationWarn("dataset.forEach() is deprecated and will be removed. Please use dataset.forEachAsync() instead"),[2,this.forEachAsync(t)]})})},t.prototype.map=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().map(function(e){return tidy(function(){return t(e)})})]}})})},this.size)},t.prototype.mapAsync=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().mapAsync(t)]}})})},this.size)},t.prototype.prefetch=function(t){var e=this;if(null==t)throw new RangeError("`Dataset.prefetch()` requires bufferSize to be specified.");var r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().prefetch(t)]}})})},this.size)},t.prototype.repeat=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){var e=this;return __generator(this,function(n){return[2,iteratorFromConcatenated(iteratorFromFunction(function(){return __awaiter(e,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return t={},[4,r.iterator()];case 1:return[2,(t.value=e.sent(),t.done=!1,t)]}})})}).take(t))]})})},null!=this.size&&t>0?this.size*t:0===t?0:null!=this.size&&(void 0===t||t<0)?1/0:null)},t.prototype.skip=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().skip(t)]}})})},null!=this.size&&t>=0&&this.size>=t?this.size-t:null!=this.size&&(this.size<t||void 0===t||t<0)?0:null)},t.prototype.shuffle=function(t,e,r){var n=this;if(void 0===r&&(r=!0),null==t||t<0)throw null==this.size?new RangeError("`Dataset.shuffle()` requires bufferSize to be specified."):new RangeError("`Dataset.shuffle()` requires bufferSize to be specified.  If your data fits in main memory (for regular JS objects), and/or GPU memory (for `tf.Tensor`s), consider setting bufferSize to the dataset size ("+this.size+" elements)");var i=this,o=seedrandom_1(e||util.now().toString());return datasetFromIteratorFn(function(){return __awaiter(n,void 0,void 0,function(){var e;return __generator(this,function(n){switch(n.label){case 0:return e=o.int32(),r&&(e+=o.int32()),[4,i.iterator()];case 1:return[2,n.sent().shuffle(t,e.toString())]}})})},this.size)},t.prototype.take=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().take(t)]}})})},null!=this.size&&this.size>t?t:null!=this.size&&this.size<=t?this.size:null)},t.prototype.toArray=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:if(this.size===1/0)throw new Error("Can not convert infinite data stream to array.");return[4,this.iterator()];case 1:return[2,t.sent().toArray()]}})})},t.prototype.toArrayForTest=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:if(this.size===1/0)throw new Error("Can not convert infinite data stream to array.");return[4,this.iterator()];case 1:return[2,t.sent().toArrayForTest()]}})})},t.MAX_BUFFER_SIZE=1e4,t}();function datasetFromIteratorFn(t,e){return void 0===e&&(e=null),new(function(r){function n(){var t=null!==r&&r.apply(this,arguments)||this;return t.size=e,t}return __extends(n,r),n.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){return[2,t()]})})},n}(Dataset))}function array(t){var e=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){return[2,iteratorFromItems(t)]})})},t.length)}function zip(t){var e,r=this;if(!isIterable(t))throw new Error("The argument to zip() must be an object or array.");if(Array.isArray(t))for(var n=0;n<t.length;n++)e=null==e?t[n].size:Math.min(e,t[n].size);else if(t instanceof Object)for(var i in t)e=null==e?t[i].size:Math.min(e,t[i].size);return datasetFromIteratorFn(function(){return __awaiter(r,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,deepMapAndAwaitAll(t,function(t){if(t instanceof Dataset)return{value:t.iterator(),recurse:!1};if(isIterable(t))return{value:null,recurse:!0};throw new Error("Leaves of the structure passed to zip() must be Datasets, not primitives.")})];case 1:return[2,iteratorFromZipped(e.sent(),ZipMismatchMode.SHORTEST)]}})})},e)}function deepBatchConcat(t){return null===t?null:canTensorify(t[0])?{value:batchConcat(t),recurse:!1}:{value:null,recurse:!0}}function batchConcat(t){if(0===t.length)throw new Error("Can't make a batch of zero elements.");return t[0]instanceof Tensor?stack(t):tensor(t)}var TextLineDataset=function(t){function e(e){var r=t.call(this)||this;return r.input=e,r}return __extends(e,t),e.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){switch(r.label){case 0:return[4,this.input.iterator()];case 1:return t=r.sent(),e=t.decodeUTF8(),[2,e.split("\n")]}})})},e}(Dataset),CODE_QUOTE='"',STATE_OUT=Symbol("out"),STATE_FIELD=Symbol("field"),STATE_QUOTE=Symbol("quote"),STATE_QUOTE_AFTER_QUOTE=Symbol("quoteafterquote"),STATE_WITHIN_QUOTE_IN_QUOTE=Symbol("quoteinquote"),CSVDataset=function(t){function e(e,r){var n=t.call(this)||this;return n.input=e,n.hasHeader=!0,n.fullColumnNames=null,n.columnNamesValidated=!1,n.columnConfigs=null,n.configuredColumnsOnly=!1,n.delimiter=",",n.base=new TextLineDataset(e),r||(r={}),n.hasHeader=!1!==r.hasHeader,n.fullColumnNames=r.columnNames,n.columnConfigs=r.columnConfigs,n.configuredColumnsOnly=r.configuredColumnsOnly,n.delimiter=r.delimiter?r.delimiter:",",n}return __extends(e,t),e.prototype.columnNames=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:return this.columnNamesValidated?[3,2]:[4,this.setColumnNames()];case 1:t.sent(),t.label=2;case 2:return[2,this.configuredColumnsOnly?Object.keys(this.columnConfigs):this.fullColumnNames]}})})},e.prototype.setColumnNames=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i,o,a=this;return __generator(this,function(u){switch(u.label){case 0:return[4,this.maybeReadHeaderLine()];case 1:if(t=u.sent(),!this.fullColumnNames&&!t)throw new Error("Column names must be provided if there is no header line.");if(this.fullColumnNames&&t&&util.assert(t.length===this.fullColumnNames.length,function(){return"The length of provided columnNames ("+a.fullColumnNames.length.toString()+") does not match the length of the header line read from file ("+t.length.toString()+")."}),this.fullColumnNames||(this.fullColumnNames=t),e=this.fullColumnNames.reduce(function(t,e){return t[e]=t[e]+1||1,t},{}),r=Object.keys(e).filter(function(t){return e[t]>1}),util.assert(0===r.length,function(){return"Duplicate column names found: "+r.toString()}),this.columnConfigs)for(n=0,i=Object.keys(this.columnConfigs);n<i.length;n++)if(o=i[n],-1===this.fullColumnNames.indexOf(o))throw new Error('The key "'+o+'" provided in columnConfigs does not match any of the column names ('+this.fullColumnNames.toString()+").");return this.columnNamesValidated=!0,[2]}})})},e.prototype.maybeReadHeaderLine=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return this.hasHeader?[4,this.base.iterator()]:[3,3];case 1:return[4,e.sent().next()];case 2:if((t=e.sent()).done)throw new Error("No data was found for CSV parsing.");return[2,t.value.split(this.delimiter)];case 3:return[2,null]}})})},e.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){var t,e=this;return __generator(this,function(r){switch(r.label){case 0:return this.columnNamesValidated?[3,2]:[4,this.setColumnNames()];case 1:r.sent(),r.label=2;case 2:return[4,this.base.iterator()];case 3:return t=r.sent(),this.hasHeader&&(t=t.skip(1)),[2,t.map(function(t){return e.makeDataElement(t)})]}})})},e.prototype.makeDataElement=function(t){for(var e=this.parseRow(t),r={},n={},i=0;i<this.fullColumnNames.length;i++){var o=this.fullColumnNames[i],a=this.columnConfigs?this.columnConfigs[o]:null;if(!this.configuredColumnsOnly||a){var u=e[i],s=null;if(""===u)if(a&&void 0!==a.default)s=a.default;else{if(a&&(a.required||a.isLabel))throw new Error("Required column "+o+" is empty in this line: "+t);s=void 0}else{var c=Number(u);if(isNaN(c))s=a&&"bool"===a.dtype?this.getBoolean(u):u;else if(a&&a.dtype)switch(a.dtype){case"float32":s=c;break;case"int32":s=Math.floor(c);break;case"bool":s=this.getBoolean(u);break;default:s=c}else s=c}a&&a.isLabel?n[o]=s:r[o]=s}}return 0===Object.keys(n).length?r:{xs:r,ys:n}},e.prototype.getBoolean=function(t){return"1"===t||"true"===t.toLowerCase()?1:0},e.prototype.parseRow=function(t){for(var e=[],r=0,n=t.length,i=STATE_FIELD,o=0;o<n;o++)switch(i){case STATE_OUT:switch(t.charAt(o)){case CODE_QUOTE:r=o+1,i=STATE_QUOTE;break;case this.delimiter:e.push(""),i=STATE_OUT,r=o+1;break;default:i=STATE_FIELD,r=o}break;case STATE_FIELD:switch(t.charAt(o)){case this.delimiter:e.push(t.substring(r,o)),i=STATE_OUT,r=o+1}break;case STATE_QUOTE:switch(t.charAt(o)){case CODE_QUOTE:i=STATE_QUOTE_AFTER_QUOTE}break;case STATE_QUOTE_AFTER_QUOTE:switch(t.charAt(o)){case this.delimiter:e.push(t.substring(r,o-1)),i=STATE_OUT,r=o+1;break;case CODE_QUOTE:i=STATE_QUOTE;break;default:i=STATE_WITHIN_QUOTE_IN_QUOTE}break;case STATE_WITHIN_QUOTE_IN_QUOTE:switch(t.charAt(o)){case CODE_QUOTE:i=STATE_QUOTE}}return i===STATE_QUOTE_AFTER_QUOTE?e.push(t.substring(r,n-1)):e.push(t.substring(r)),e},e}(Dataset),DataSource=function(){return function(){}}(),StringIterator=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return __extends(e,t),e.prototype.split=function(t){return new SplitIterator(this,t)},e}(LazyIterator),SplitIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.impl=new SplitIteratorImpl(e,r),n}return __extends(e,t),e.prototype.summary=function(){return this.impl.summary()},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return[2,this.impl.next()]})})},e}(StringIterator),SplitIteratorImpl=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.separator=r,n.carryover="",n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Split('"+this.separator+"')"},e.prototype.pump=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i;return __generator(this,function(o){switch(o.label){case 0:return[4,this.upstream.next()];case 1:if((t=o.sent()).done)return""===this.carryover?[2,!1]:(this.outputQueue.push(this.carryover),this.carryover="",[2,!0]);for((e=t.value.split(this.separator))[0]=this.carryover+e[0],r=0,n=e.slice(0,-1);r<n.length;r++)i=n[r],this.outputQueue.push(i);return this.carryover=e[e.length-1],[2,!0]}})})},e}(OneToManyIterator),ByteChunkIterator=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return __extends(e,t),e.prototype.decodeUTF8=function(){return new Utf8Iterator(this)},e}(LazyIterator),Utf8Iterator=function(t){function e(e){var r=t.call(this)||this;return r.upstream=e,r.impl=new Utf8IteratorImpl(e),r}return __extends(e,t),e.prototype.summary=function(){return this.impl.summary()},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return[2,this.impl.next()]})})},e}(StringIterator),Utf8IteratorImpl=function(t){function e(e){var r=t.call(this)||this;if(r.upstream=e,ENV.get("IS_BROWSER"))r.decoder=new TextDecoder("utf-8");else{var n=require("string_decoder").StringDecoder;r.decoder=new n("utf8")}return r}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Utf8"},e.prototype.pump=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r;return __generator(this,function(n){switch(n.label){case 0:return[4,this.upstream.next()];case 1:return(t=n.sent()).done?[2,!1]:(e=t.value,r=ENV.get("IS_BROWSER")?this.decoder.decode(e,{stream:!0}):this.decoder.write(Buffer.from(e.buffer)),this.outputQueue.push(r),[2,!0])}})})},e}(OneToManyIterator),FileChunkIterator=function(t){function e(e,r){void 0===r&&(r={});var n=t.call(this)||this;return n.file=e,n.options=r,util.assert(e instanceof Uint8Array||!!ENV.get("IS_BROWSER")&&(e instanceof File||e instanceof Blob),function(){return"FileChunkIterator only supports File, Blob and Uint8Array right now."}),n.offset=r.offset||0,n.chunkSize=r.chunkSize||1048576,n}return __extends(e,t),e.prototype.summary=function(){return"FileChunks "+this.file},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r=this;return __generator(this,function(n){switch(n.label){case 0:return this.offset>=(this.file instanceof Uint8Array?this.file.byteLength:this.file.size)?[2,{value:null,done:!0}]:(t=new Promise(function(t,e){var n=r.offset+r.chunkSize;if(r.file instanceof Uint8Array)t(new Uint8Array(r.file.slice(r.offset,n)));else{var i=new FileReader;i.onload=function(r){var n=i.result;if(n instanceof ArrayBuffer&&(n=new Uint8Array(n)),!(n instanceof Uint8Array))return e(new TypeError("FileReader returned unknown type."));t(n)},i.onabort=function(t){return e(new Error("Aborted"))},i.onerror=function(t){return e(new Error(t.type))};var o=r.file.slice(r.offset,n);i.readAsArrayBuffer(o)}r.offset=n}),e={},[4,t]);case 1:return[2,(e.value=n.sent(),e.done=!1,e)]}})})},e}(ByteChunkIterator);function urlChunkIterator(t,e){return void 0===e&&(e={}),__awaiter(this,void 0,void 0,function(){var r,n,i,o;return __generator(this,function(a){switch(a.label){case 0:return ENV.get("IS_BROWSER")?[4,fetch(t)]:[3,5];case 1:return(r=a.sent()).ok?[4,r.blob()]:[3,3];case 2:return n=a.sent(),[2,new FileChunkIterator(n,e)];case 3:throw new Error(r.statusText);case 4:return[3,9];case 5:if(i=require("node-fetch"),"string"!=typeof t)throw new Error("URL must be a string. Request objects are not supported in the node.js environment yet.");return[4,i(t)];case 6:return(r=a.sent()).ok?[4,r.buffer()]:[3,8];case 7:return o=a.sent(),[2,new FileChunkIterator(o,e)];case 8:throw new Error(r.statusText);case 9:return[2]}})})}function isLocalPath(t){return"string"==typeof t&&"file://"===t.substr(0,7)}var FileDataSource=function(t){function e(e,r){void 0===r&&(r={});var n=t.call(this)||this;return n.input=e,n.options=r,n}return __extends(e,t),e.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){return isLocalPath(this.input)&&ENV.get("IS_NODE")&&(t=require("fs"),this.input=t.readFileSync(this.input.substr(7))),[2,new FileChunkIterator(this.input,this.options)]})})},e}(DataSource),URLDataSource=function(t){function e(e,r){void 0===r&&(r={});var n=t.call(this)||this;return n.url=e,n.fileOptions=r,n}return __extends(e,t),e.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return isLocalPath(this.url)?[2,new FileDataSource(this.url,this.fileOptions).iterator()]:[2,urlChunkIterator(this.url,this.fileOptions)]})})},e}(DataSource);function csv(t,e){return void 0===e&&(e={}),new CSVDataset(new URLDataSource(t),e)}function func(t){var e=this,r=iteratorFromFunction(t);return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(t){return[2,r]})})})}function generator(t){var e=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){var e;return __generator(this,function(r){switch(r.label){case 0:return[4,t()];case 1:return e=r.sent(),[2,iteratorFromFunction(function(){return e.next()})]}})})})}var version="1.0.3";export{array,Dataset,zip,CSVDataset,TextLineDataset,csv,func,generator,FileDataSource,URLDataSource,version as version_data};
+import{util,tidy,deprecationWarn,Tensor,stack,tensor,ENV,clone,dispose,tensor_util}from"@tensorflow/tfjs-core";var extendStatics=function(t,e){return(extendStatics=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var r in e)e.hasOwnProperty(r)&&(t[r]=e[r])})(t,e)};function __extends(t,e){function r(){this.constructor=t}extendStatics(t,e),t.prototype=null===e?Object.create(e):(r.prototype=e.prototype,new r)}function __awaiter(t,e,r,n){return new(r||(r=Promise))(function(i,o){function a(t){try{u(n.next(t))}catch(t){o(t)}}function s(t){try{u(n.throw(t))}catch(t){o(t)}}function u(t){t.done?i(t.value):new r(function(e){e(t.value)}).then(a,s)}u((n=n.apply(t,e||[])).next())})}function __generator(t,e){var r,n,i,o,a={label:0,sent:function(){if(1&i[0])throw i[1];return i[1]},trys:[],ops:[]};return o={next:s(0),throw:s(1),return:s(2)},"function"==typeof Symbol&&(o[Symbol.iterator]=function(){return this}),o;function s(o){return 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AsyncMapIterator(this,t).serial()},t.prototype.flatmap=function(t){return new FlatmapIterator(this,t)},t.prototype.forEachAsync=function(t){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){return[2,this.map(t).resolveFully()]})})},t.prototype.serialForEach=function(t){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){return[2,this.serialMapAsync(t).resolveWhile(function(t){return!0===t})]})})},t.prototype.rowMajorBatch=function(t,e){return void 0===e&&(e=!0),new RowMajorBatchIterator(this,t,e)},t.prototype.columnMajorBatch=function(t,e,r){return void 0===e&&(e=!0),void 0===r&&(r=zipToList),this.rowMajorBatch(t,e).map(function(t){return deepZip(t,r)})},t.prototype.concatenate=function(t,e){return new ChainedIterator(iteratorFromItems([this,t]),e)},t.prototype.take=function(t){return t<0||null==t?this:new TakeIterator(this,t)},t.prototype.skip=function(t){return t<0||null==t?this:new SkipIterator(this,t)},t.prototype.prefetch=function(t){return new PrefetchIterator(this,t)},t.prototype.shuffle=function(t,e){return new ShuffleIterator(this,t,e)},t.prototype.serial=function(){return new SerialIterator(this)},t}(),ArrayIterator=function(t){function e(e){var r=t.call(this)||this;return r.items=e,r.trav=0,r}return __extends(e,t),e.prototype.summary=function(){return"Array of "+this.items.length+" items"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){return this.trav>=this.items.length?[2,{value:null,done:!0}]:(t=this.items[this.trav],e=t instanceof Tensor?clone(t):t,this.trav++,[2,{value:e,done:!1}])})})},e}(LazyIterator),FunctionCallIterator=function(t){function e(e){var r=t.call(this)||this;return r.nextFn=e,r}return __extends(e,t),e.prototype.summary=function(){return"Function call"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){try{return[2,this.nextFn()]}catch(t){throw t.message="Error thrown while iterating through a dataset: "+t.message,t}return[2]})})},e}(LazyIterator),SerialIterator=function(t){function e(e){var r=t.call(this)||this;return r.upstream=e,r.lastRead=Promise.resolve({value:null,done:!1}),r}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Serial"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return[2,this.upstream.next()]})})},e}(LazyIterator),SkipIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.maxCount=r,n.count=0,n.lastRead=Promise.resolve({value:null,done:!1}),n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Skip"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return this.count++<this.maxCount?[4,this.upstream.next()]:[3,2];case 1:return(t=e.sent()).done?[2,t]:(dispose(t.value),[3,0]);case 2:return[2,this.upstream.next()]}})})},e}(LazyIterator),TakeIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.maxCount=r,n.count=0,n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Take"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return this.count++>=this.maxCount?[2,{value:null,done:!0}]:[2,this.upstream.next()]})})},e}(LazyIterator),RowMajorBatchIterator=function(t){function e(e,r,n){void 0===n&&(n=!0);var i=t.call(this)||this;return i.upstream=e,i.batchSize=r,i.enableSmallLastBatch=n,i.lastRead=Promise.resolve({value:null,done:!1}),i}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> RowMajorBatch"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){switch(r.label){case 0:t=[],r.label=1;case 1:return t.length<this.batchSize?[4,this.upstream.next()]:[3,3];case 2:return(e=r.sent()).done?this.enableSmallLastBatch&&t.length>0?[2,{value:t,done:!1}]:[2,{value:null,done:!0}]:(t.push(e.value),[3,1]);case 3:return[2,{value:t,done:!1}]}})})},e}(LazyIterator),FilterIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.predicate=r,n.lastRead=Promise.resolve({value:null,done:!1}),n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Filter"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return[4,this.upstream.next()];case 1:return(t=e.sent()).done||this.predicate(t.value)?[2,t]:(dispose(t.value),[3,0]);case 2:return[2]}})})},e}(LazyIterator),MapIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.transform=r,n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Map"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i,o,a;return __generator(this,function(s){switch(s.label){case 0:return[4,this.upstream.next()];case 1:if((t=s.sent()).done)return[2,{value:null,done:!0}];for(e=tensor_util.getTensorsInContainer(t.value),r=this.transform(t.value),n=tensor_util.getTensorsInContainer(r),i=0,o=e;i<o.length;i++)a=o[i],tensor_util.isTensorInList(a,n)||a.dispose();return[2,{value:r,done:!1}]}})})},e}(LazyIterator),ErrorHandlingLazyIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.handler=r,n.count=0,n.lastRead=Promise.resolve({value:null,done:!1}),n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> handleErrors"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:e.label=1;case 1:return e.trys.push([1,3,,4]),[4,this.upstream.next()];case 2:return[2,e.sent()];case 3:return t=e.sent(),this.handler(t)?[3,4]:[2,{value:null,done:!0}];case 4:return[3,0];case 5:return[2]}})})},e}(LazyIterator),AsyncMapIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.transform=r,n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> AsyncMap"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i,o,a;return __generator(this,function(s){switch(s.label){case 0:return[4,this.upstream.next()];case 1:return(t=s.sent()).done?[2,{value:null,done:!0}]:(e=tensor_util.getTensorsInContainer(t.value),[4,this.transform(t.value)]);case 2:for(r=s.sent(),n=tensor_util.getTensorsInContainer(r),i=0,o=e;i<o.length;i++)a=o[i],tensor_util.isTensorInList(a,n)||a.dispose();return[2,{value:r,done:!1}]}})})},e}(LazyIterator),OneToManyIterator=function(t){function e(){var e=t.call(this)||this;return e.outputQueue=new GrowingRingBuffer,e.lastRead=Promise.resolve({value:null,done:!1}),e}return __extends(e,t),e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:return 0!==this.outputQueue.length()?[3,2]:[4,this.pump()];case 1:return t.sent()?[3,0]:[2,{value:null,done:!0}];case 2:return[2,{value:this.outputQueue.shift(),done:!1}]}})})},e}(LazyIterator),FlatmapIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.transform=r,n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Flatmap"},e.prototype.pump=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i,o,a;return __generator(this,function(s){switch(s.label){case 0:return[4,this.upstream.next()];case 1:if((t=s.sent()).done)return[2,!1];for(e=tensor_util.getTensorsInContainer(t.value),r=this.transform(t.value),n=tensor_util.getTensorsInContainer(r),this.outputQueue.pushAll(r),i=0,o=e;i<o.length;i++)a=o[i],tensor_util.isTensorInList(a,n)||a.dispose();return[2,!0]}})})},e}(OneToManyIterator),ChainedIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.baseErrorHandler=r,n.lastRead=null,n.iterator=null,n.moreIterators=e,n}return __extends(e,t),e.prototype.summary=function(){return"TODO: fill in upstream of chained summaries -> Chained"},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return this.lastRead=this.readFromChain(this.lastRead),[2,this.lastRead]})})},e.prototype.readFromChain=function(t){return __awaiter(this,void 0,void 0,function(){var e,r;return __generator(this,function(n){switch(n.label){case 0:return[4,t];case 1:return n.sent(),null!=this.iterator?[3,3]:[4,this.moreIterators.next()];case 2:if((e=n.sent()).done)return[2,{value:null,done:!0}];this.iterator=e.value,null!=this.baseErrorHandler&&(this.iterator=this.iterator.handleErrors(this.baseErrorHandler)),n.label=3;case 3:return[4,this.iterator.next()];case 4:return(r=n.sent()).done?(this.iterator=null,[2,this.readFromChain(t)]):[2,r]}})})},e}(LazyIterator);!function(t){t[t.FAIL=0]="FAIL",t[t.SHORTEST=1]="SHORTEST",t[t.LONGEST=2]="LONGEST"}(ZipMismatchMode||(ZipMismatchMode={}));var ZipIterator=function(t){function e(e,r){void 0===r&&(r=ZipMismatchMode.FAIL);var n=t.call(this)||this;return n.iterators=e,n.mismatchMode=r,n.count=0,n.currentPromise=null,n}return __extends(e,t),e.prototype.summary=function(){return"{TODO: fill in upstream of zip summaries} -> Zip"},e.prototype.nextState=function(t){return __awaiter(this,void 0,void 0,function(){function e(t){return t instanceof LazyIterator?{value:t.next().then(function(t){return r++,t.done&&n++,t.value}),recurse:!1}:{value:null,recurse:!0}}var r,n,i;return __generator(this,function(o){switch(o.label){case 0:return[4,t];case 1:return o.sent(),r=0,n=0,[4,deepMapAndAwaitAll(this.iterators,e)];case 2:if(i=o.sent(),r===n)return[2,{value:null,done:!0}];if(n>0)switch(this.mismatchMode){case ZipMismatchMode.FAIL:throw new Error("Zipped streams should have the same length. Mismatched at element "+this.count+".");case ZipMismatchMode.SHORTEST:return[2,{value:null,done:!0}];case ZipMismatchMode.LONGEST:}return this.count++,[2,{value:i,done:!1}]}})})},e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:return this.currentPromise=this.nextState(this.currentPromise),[4,this.currentPromise];case 1:return[2,t.sent()]}})})},e}(LazyIterator),PrefetchIterator=function(t){function e(e,r){var n=t.call(this)||this;return n.upstream=e,n.bufferSize=r,n.buffer=new RingBuffer(r),n}return __extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Prefetch"},e.prototype.refill=function(){for(;!this.buffer.isFull();){var t=this.upstream.next();this.buffer.push(t)}},e.prototype.next=function(){return this.refill(),this.buffer.shift()},e}(LazyIterator),ShuffleIterator=function(t){function e(e,r,n){var i=t.call(this,e,r)||this;return i.upstream=e,i.windowSize=r,i.upstreamExhausted=!1,i.random=seedrandom_1(n||util.now().toString()),i.lastRead=Promise.resolve({value:null,done:!1}),i}return __extends(e,t),e.prototype.next=function(){return __awaiter(this,void 0,void 0,function(){var t=this;return __generator(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.randomInt=function(t){return Math.floor(this.random()*t)},e.prototype.chooseIndex=function(){return this.randomInt(this.buffer.length())},e.prototype.serialNext=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){switch(r.label){case 0:this.upstreamExhausted||this.refill(),r.label=1;case 1:return this.buffer.isEmpty()?[3,3]:(t=this.chooseIndex(),[4,this.buffer.shuffleExcise(t)]);case 2:return(e=r.sent()).done?(this.upstreamExhausted=!0,[3,1]):(this.refill(),[2,e]);case 3:return[2,{value:null,done:!0}]}})})},e}(PrefetchIterator),Dataset=function(){function t(){this.size=null}return t.prototype.batch=function(t,e){var r=this;void 0===e&&(e=!0);var n=this;return util.assert(t>0,function(){return"batchSize needs to be positive, but it is\n      "+t}),datasetFromIteratorFn(function(){return __awaiter(r,void 0,void 0,function(){return __generator(this,function(r){switch(r.label){case 0:return[4,n.iterator()];case 1:return[2,r.sent().columnMajorBatch(t,e,deepBatchConcat)]}})})},this.size===1/0||null==this.size?this.size:e?Math.ceil(this.size/t):Math.floor(this.size/t))},t.prototype.concatenate=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){var e,n;return __generator(this,function(i){switch(i.label){case 0:return[4,r.iterator()];case 1:return n=(e=i.sent()).concatenate,[4,t.iterator()];case 2:return[2,n.apply(e,[i.sent()])]}})})},this.size===1/0||t.size===1/0?1/0:null!=this.size&&null!=t.size?this.size+t.size:null)},t.prototype.filter=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().filter(function(e){return tidy(function(){return t(e)})})]}})})},this.size===1/0?1/0:null)},t.prototype.forEachAsync=function(t){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,this.iterator()];case 1:return[2,e.sent().forEachAsync(t)]}})})},t.prototype.forEach=function(t){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){return deprecationWarn("dataset.forEach() is deprecated and will be removed. Please use dataset.forEachAsync() instead"),[2,this.forEachAsync(t)]})})},t.prototype.map=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().map(function(e){return tidy(function(){return t(e)})})]}})})},this.size)},t.prototype.mapAsync=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().mapAsync(t)]}})})},this.size)},t.prototype.prefetch=function(t){var e=this;if(null==t)throw new RangeError("`Dataset.prefetch()` requires bufferSize to be specified.");var r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().prefetch(t)]}})})},this.size)},t.prototype.repeat=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){var e=this;return __generator(this,function(n){return[2,iteratorFromConcatenated(iteratorFromFunction(function(){return __awaiter(e,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return t={},[4,r.iterator()];case 1:return[2,(t.value=e.sent(),t.done=!1,t)]}})})}).take(t))]})})},null!=this.size&&t>0?this.size*t:0===t?0:null!=this.size&&(void 0===t||t<0)?1/0:null)},t.prototype.skip=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().skip(t)]}})})},null!=this.size&&t>=0&&this.size>=t?this.size-t:null!=this.size&&(this.size<t||void 0===t||t<0)?0:null)},t.prototype.shuffle=function(t,e,r){var n=this;if(void 0===r&&(r=!0),null==t||t<0)throw null==this.size?new RangeError("`Dataset.shuffle()` requires bufferSize to be specified."):new RangeError("`Dataset.shuffle()` requires bufferSize to be specified.  If your data fits in main memory (for regular JS objects), and/or GPU memory (for `tf.Tensor`s), consider setting bufferSize to the dataset size ("+this.size+" elements)");var i=this,o=seedrandom_1(e||util.now().toString());return datasetFromIteratorFn(function(){return __awaiter(n,void 0,void 0,function(){var e;return __generator(this,function(n){switch(n.label){case 0:return e=o.int32(),r&&(e+=o.int32()),[4,i.iterator()];case 1:return[2,n.sent().shuffle(t,e.toString())]}})})},this.size)},t.prototype.take=function(t){var e=this,r=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,r.iterator()];case 1:return[2,e.sent().take(t)]}})})},null!=this.size&&this.size>t?t:null!=this.size&&this.size<=t?this.size:null)},t.prototype.toArray=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:if(this.size===1/0)throw new Error("Can not convert infinite data stream to array.");return[4,this.iterator()];case 1:return[2,t.sent().toArray()]}})})},t.prototype.toArrayForTest=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:if(this.size===1/0)throw new Error("Can not convert infinite data stream to array.");return[4,this.iterator()];case 1:return[2,t.sent().toArrayForTest()]}})})},t.MAX_BUFFER_SIZE=1e4,t}();function datasetFromIteratorFn(t,e){return void 0===e&&(e=null),new(function(r){function n(){var t=null!==r&&r.apply(this,arguments)||this;return t.size=e,t}return __extends(n,r),n.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(e){return[2,t()]})})},n}(Dataset))}function array(t){var e=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(e){return[2,iteratorFromItems(t)]})})},t.length)}function zip(t){var e,r=this;if(!isIterable(t))throw new Error("The argument to zip() must be an object or array.");if(Array.isArray(t))for(var n=0;n<t.length;n++)e=null==e?t[n].size:Math.min(e,t[n].size);else if(t instanceof Object)for(var i in t)e=null==e?t[i].size:Math.min(e,t[i].size);return datasetFromIteratorFn(function(){return __awaiter(r,void 0,void 0,function(){return __generator(this,function(e){switch(e.label){case 0:return[4,deepMapAndAwaitAll(t,function(t){if(t instanceof Dataset)return{value:t.iterator(),recurse:!1};if(isIterable(t))return{value:null,recurse:!0};throw new Error("Leaves of the structure passed to zip() must be Datasets, not primitives.")})];case 1:return[2,iteratorFromZipped(e.sent(),ZipMismatchMode.SHORTEST)]}})})},e)}function deepBatchConcat(t){return null===t?null:canTensorify(t[0])?{value:batchConcat(t),recurse:!1}:{value:null,recurse:!0}}function batchConcat(t){if(0===t.length)throw new Error("Can't make a batch of zero elements.");return t[0]instanceof Tensor?stack(t):tensor(t)}var TextLineDataset=function(t){function e(e){var r=t.call(this)||this;return r.input=e,r}return __extends(e,t),e.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){var t,e;return __generator(this,function(r){switch(r.label){case 0:return[4,this.input.iterator()];case 1:return t=r.sent(),e=t.decodeUTF8(),[2,e.split("\n")]}})})},e}(Dataset),CODE_QUOTE='"',STATE_OUT=Symbol("out"),STATE_FIELD=Symbol("field"),STATE_QUOTE=Symbol("quote"),STATE_QUOTE_AFTER_QUOTE=Symbol("quoteafterquote"),STATE_WITHIN_QUOTE_IN_QUOTE=Symbol("quoteinquote"),CSVDataset=function(t){function e(e,r){var n=t.call(this)||this;return n.input=e,n.hasHeader=!0,n.fullColumnNames=null,n.columnNamesValidated=!1,n.columnConfigs=null,n.configuredColumnsOnly=!1,n.delimiter=",",n.base=new TextLineDataset(e),r||(r={}),n.hasHeader=!1!==r.hasHeader,n.fullColumnNames=r.columnNames,n.columnConfigs=r.columnConfigs,n.configuredColumnsOnly=r.configuredColumnsOnly,n.delimiter=r.delimiter?r.delimiter:",",n}return __extends(e,t),e.prototype.columnNames=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){switch(t.label){case 0:return this.columnNamesValidated?[3,2]:[4,this.setColumnNames()];case 1:t.sent(),t.label=2;case 2:return[2,this.configuredColumnsOnly?Object.keys(this.columnConfigs):this.fullColumnNames]}})})},e.prototype.setColumnNames=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i,o,a=this;return __generator(this,function(s){switch(s.label){case 0:return[4,this.maybeReadHeaderLine()];case 1:if(t=s.sent(),!this.fullColumnNames&&!t)throw new Error("Column names must be provided if there is no header line.");if(this.fullColumnNames&&t&&util.assert(t.length===this.fullColumnNames.length,function(){return"The length of provided columnNames ("+a.fullColumnNames.length.toString()+") does not match the length of the header line read from file ("+t.length.toString()+")."}),this.fullColumnNames||(this.fullColumnNames=t),e=this.fullColumnNames.reduce(function(t,e){return t[e]=t[e]+1||1,t},{}),r=Object.keys(e).filter(function(t){return e[t]>1}),util.assert(0===r.length,function(){return"Duplicate column names found: "+r.toString()}),this.columnConfigs)for(n=0,i=Object.keys(this.columnConfigs);n<i.length;n++)if(o=i[n],-1===this.fullColumnNames.indexOf(o))throw new Error('The key "'+o+'" provided in columnConfigs does not match any of the column names ('+this.fullColumnNames.toString()+").");return this.columnNamesValidated=!0,[2]}})})},e.prototype.maybeReadHeaderLine=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){switch(e.label){case 0:return this.hasHeader?[4,this.base.iterator()]:[3,3];case 1:return[4,e.sent().next()];case 2:if((t=e.sent()).done)throw new Error("No data was found for CSV parsing.");return[2,t.value.split(this.delimiter)];case 3:return[2,null]}})})},e.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){var t,e=this;return __generator(this,function(r){switch(r.label){case 0:return this.columnNamesValidated?[3,2]:[4,this.setColumnNames()];case 1:r.sent(),r.label=2;case 2:return[4,this.base.iterator()];case 3:return t=r.sent(),this.hasHeader&&(t=t.skip(1)),[2,t.map(function(t){return e.makeDataElement(t)})]}})})},e.prototype.makeDataElement=function(t){for(var e=this.parseRow(t),r={},n={},i=0;i<this.fullColumnNames.length;i++){var o=this.fullColumnNames[i],a=this.columnConfigs?this.columnConfigs[o]:null;if(!this.configuredColumnsOnly||a){var s=e[i],u=null;if(""===s)if(a&&void 0!==a.default)u=a.default;else{if(a&&(a.required||a.isLabel))throw new Error("Required column "+o+" is empty in this line: "+t);u=void 0}else{var c=Number(s);if(isNaN(c))u=a&&"bool"===a.dtype?this.getBoolean(s):s;else if(a&&a.dtype)switch(a.dtype){case"float32":u=c;break;case"int32":u=Math.floor(c);break;case"bool":u=this.getBoolean(s);break;default:u=c}else u=c}a&&a.isLabel?n[o]=u:r[o]=u}}return 0===Object.keys(n).length?r:{xs:r,ys:n}},e.prototype.getBoolean=function(t){return"1"===t||"true"===t.toLowerCase()?1:0},e.prototype.parseRow=function(t){for(var e=[],r=0,n=t.length,i=STATE_FIELD,o=0;o<n;o++)switch(i){case STATE_OUT:switch(t.charAt(o)){case CODE_QUOTE:r=o+1,i=STATE_QUOTE;break;case this.delimiter:e.push(""),i=STATE_OUT,r=o+1;break;default:i=STATE_FIELD,r=o}break;case STATE_FIELD:switch(t.charAt(o)){case this.delimiter:e.push(t.substring(r,o)),i=STATE_OUT,r=o+1}break;case STATE_QUOTE:switch(t.charAt(o)){case CODE_QUOTE:i=STATE_QUOTE_AFTER_QUOTE}break;case STATE_QUOTE_AFTER_QUOTE:switch(t.charAt(o)){case this.delimiter:e.push(t.substring(r,o-1)),i=STATE_OUT,r=o+1;break;case 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__extends(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Split('"+this.separator+"')"},e.prototype.pump=function(){return __awaiter(this,void 0,void 0,function(){var t,e,r,n,i;return __generator(this,function(o){switch(o.label){case 0:return[4,this.upstream.next()];case 1:if((t=o.sent()).done)return""===this.carryover?[2,!1]:(this.outputQueue.push(this.carryover),this.carryover="",[2,!0]);for((e=t.value.split(this.separator))[0]=this.carryover+e[0],r=0,n=e.slice(0,-1);r<n.length;r++)i=n[r],this.outputQueue.push(i);return this.carryover=e[e.length-1],[2,!0]}})})},e}(OneToManyIterator),ByteChunkIterator=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return __extends(e,t),e.prototype.decodeUTF8=function(){return new Utf8Iterator(this)},e}(LazyIterator),Utf8Iterator=function(t){function e(e){var r=t.call(this)||this;return r.upstream=e,r.impl=new Utf8IteratorImpl(e),r}return __extends(e,t),e.prototype.summary=function(){return 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Error("Aborted"))},i.onerror=function(t){return e(new Error(t.type))};var o=r.file.slice(r.offset,n);i.readAsArrayBuffer(o)}r.offset=n}),e={},[4,t]);case 1:return[2,(e.value=n.sent(),e.done=!1,e)]}})})},e}(ByteChunkIterator);function urlChunkIterator(t,e){return void 0===e&&(e={}),__awaiter(this,void 0,void 0,function(){var r,n,i,o;return __generator(this,function(a){switch(a.label){case 0:return ENV.get("IS_BROWSER")?[4,fetch(t)]:[3,5];case 1:return(r=a.sent()).ok?[4,r.blob()]:[3,3];case 2:return n=a.sent(),[2,new FileChunkIterator(n,e)];case 3:throw new Error(r.statusText);case 4:return[3,9];case 5:if(i=require("node-fetch"),"string"!=typeof t)throw new Error("URL must be a string. Request objects are not supported in the node.js environment yet.");return[4,i(t)];case 6:return(r=a.sent()).ok?[4,r.buffer()]:[3,8];case 7:return o=a.sent(),[2,new FileChunkIterator(o,e)];case 8:throw new Error(r.statusText);case 9:return[2]}})})}function isLocalPath(t){return"string"==typeof t&&"file://"===t.substr(0,7)}var FileDataSource=function(t){function e(e,r){void 0===r&&(r={});var n=t.call(this)||this;return n.input=e,n.options=r,n}return __extends(e,t),e.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){var t;return __generator(this,function(e){return isLocalPath(this.input)&&ENV.get("IS_NODE")&&(t=require("fs"),this.input=t.readFileSync(this.input.substr(7))),[2,new FileChunkIterator(this.input,this.options)]})})},e}(DataSource),URLDataSource=function(t){function e(e,r){void 0===r&&(r={});var n=t.call(this)||this;return n.url=e,n.fileOptions=r,n}return __extends(e,t),e.prototype.iterator=function(){return __awaiter(this,void 0,void 0,function(){return __generator(this,function(t){return isLocalPath(this.url)?[2,new FileDataSource(this.url,this.fileOptions).iterator()]:[2,urlChunkIterator(this.url,this.fileOptions)]})})},e}(DataSource);function csv(t,e){return void 0===e&&(e={}),new CSVDataset(new URLDataSource(t),e)}function func(t){var e=this,r=iteratorFromFunction(t);return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){return __generator(this,function(t){return[2,r]})})})}function generator(t){var e=this;return datasetFromIteratorFn(function(){return __awaiter(e,void 0,void 0,function(){var e;return __generator(this,function(r){switch(r.label){case 0:return[4,t()];case 1:return e=r.sent(),[2,iteratorFromFunction(function(){return e.next()})]}})})})}var version="1.0.4";export{array,Dataset,zip,CSVDataset,TextLineDataset,csv,func,generator,FileDataSource,URLDataSource,version as version_data};
 //# sourceMappingURL=tf-data.esm.js.map

dist/tf-data.min.js

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t,n,r,i,u,s,a;return o(this,function(o){switch(o.label){case 0:return[4,this.upstream.next()];case 1:return(t=o.sent()).done?[2,{value:null,done:!0}]:(n=e.tensor_util.getTensorsInContainer(t.value),[4,this.transform(t.value)]);case 2:for(r=o.sent(),i=e.tensor_util.getTensorsInContainer(r),u=0,s=n;u<s.length;u++)a=s[u],e.tensor_util.isTensorInList(a,i)||a.dispose();return[2,{value:r,done:!1}]}})})},n}(N),q=function(t){function e(){var e=t.call(this)||this;return e.outputQueue=new A,e.lastRead=Promise.resolve({value:null,done:!1}),e}return r(e,t),e.prototype.next=function(){return i(this,void 0,void 0,function(){var t=this;return o(this,function(e){return this.lastRead=this.lastRead.then(function(){return t.serialNext()}),[2,this.lastRead]})})},e.prototype.serialNext=function(){return i(this,void 0,void 0,function(){return o(this,function(t){switch(t.label){case 0:return 0!==this.outputQueue.length()?[3,2]:[4,this.pump()];case 1:return t.sent()?[3,0]:[2,{value:null,done:!0}];case 2:return[2,{value:this.outputQueue.shift(),done:!1}]}})})},e}(N),U=function(t){function n(e,n){var r=t.call(this)||this;return r.upstream=e,r.transform=n,r}return r(n,t),n.prototype.summary=function(){return this.upstream.summary()+" -> Flatmap"},n.prototype.pump=function(){return i(this,void 0,void 0,function(){var t,n,r,i,u,s,a;return o(this,function(o){switch(o.label){case 0:return[4,this.upstream.next()];case 1:if((t=o.sent()).done)return[2,!1];for(n=e.tensor_util.getTensorsInContainer(t.value),r=this.transform(t.value),i=e.tensor_util.getTensorsInContainer(r),this.outputQueue.pushAll(r),u=0,s=n;u<s.length;u++)a=s[u],e.tensor_util.isTensorInList(a,i)||a.dispose();return[2,!0]}})})},n}(q),H=function(t){function e(e,n){var r=t.call(this)||this;return r.baseErrorHandler=n,r.lastRead=null,r.iterator=null,r.moreIterators=e,r}return r(e,t),e.prototype.summary=function(){return"TODO: fill in upstream of chained summaries -> Chained"},e.prototype.next=function(){return i(this,void 0,void 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2:return[2,{value:this.outputQueue.shift(),done:!1}]}})})},e}(A),M=function(t){function n(e,n){var r=t.call(this)||this;return r.upstream=e,r.transform=n,r}return r(n,t),n.prototype.summary=function(){return this.upstream.summary()+" -> Flatmap"},n.prototype.pump=function(){return i(this,void 0,void 0,function(){var t,n,r,i,u,s,a;return o(this,function(o){switch(o.label){case 0:return[4,this.upstream.next()];case 1:if((t=o.sent()).done)return[2,!1];for(n=e.tensor_util.getTensorsInContainer(t.value),r=this.transform(t.value),i=e.tensor_util.getTensorsInContainer(r),this.outputQueue.pushAll(r),u=0,s=n;u<s.length;u++)a=s[u],e.tensor_util.isTensorInList(a,i)||a.dispose();return[2,!0]}})})},n}(L),q=function(t){function e(e,n){var r=t.call(this)||this;return r.baseErrorHandler=n,r.lastRead=null,r.iterator=null,r.moreIterators=e,r}return r(e,t),e.prototype.summary=function(){return"TODO: fill in upstream of chained summaries -> Chained"},e.prototype.next=function(){return i(this,void 0,void 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r(e,t),e.prototype.summary=function(){return this.impl.summary()},e.prototype.next=function(){return i(this,void 0,void 0,function(){return o(this,function(t){return[2,this.impl.next()]})})},e}($),et=function(t){function e(e,n){var r=t.call(this)||this;return r.upstream=e,r.separator=n,r.carryover="",r}return r(e,t),e.prototype.summary=function(){return this.upstream.summary()+" -> Split('"+this.separator+"')"},e.prototype.pump=function(){return i(this,void 0,void 0,function(){var t,e,n,r,i;return o(this,function(o){switch(o.label){case 0:return[4,this.upstream.next()];case 1:if((t=o.sent()).done)return""===this.carryover?[2,!1]:(this.outputQueue.push(this.carryover),this.carryover="",[2,!0]);for((e=t.value.split(this.separator))[0]=this.carryover+e[0],n=0,r=e.slice(0,-1);n<r.length;n++)i=r[n],this.outputQueue.push(i);return this.carryover=e[e.length-1],[2,!0]}})})},e}(L),nt=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return r(e,t),e.prototype.decodeUTF8=function(){return new rt(this)},e}(A),rt=function(t){function e(e){var n=t.call(this)||this;return n.upstream=e,n.impl=new it(e),n}return r(e,t),e.prototype.summary=function(){return this.impl.summary()},e.prototype.next=function(){return i(this,void 0,void 0,function(){return o(this,function(t){return[2,this.impl.next()]})})},e}($),it=function(t){function n(n){var r=t.call(this)||this;if(r.upstream=n,e.ENV.get("IS_BROWSER"))r.decoder=new TextDecoder("utf-8");else{var i=require("string_decoder").StringDecoder;r.decoder=new i("utf8")}return r}return r(n,t),n.prototype.summary=function(){return this.upstream.summary()+" -> Utf8"},n.prototype.pump=function(){return i(this,void 0,void 0,function(){var t,n,r;return o(this,function(i){switch(i.label){case 0:return[4,this.upstream.next()];case 1:return(t=i.sent()).done?[2,!1]:(n=t.value,r=e.ENV.get("IS_BROWSER")?this.decoder.decode(n,{stream:!0}):this.decoder.write(Buffer.from(n.buffer)),this.outputQueue.push(r),[2,!0])}})})},n}(L),ot=function(t){function n(n,r){void 0===r&&(r={});var i=t.call(this)||this;return i.file=n,i.options=r,e.util.assert(n instanceof Uint8Array||!!e.ENV.get("IS_BROWSER")&&(n instanceof File||n instanceof Blob),function(){return"FileChunkIterator only supports File, Blob and Uint8Array right now."}),i.offset=r.offset||0,i.chunkSize=r.chunkSize||1048576,i}return r(n,t),n.prototype.summary=function(){return"FileChunks "+this.file},n.prototype.next=function(){return i(this,void 0,void 0,function(){var t,e,n=this;return o(this,function(r){switch(r.label){case 0:return this.offset>=(this.file instanceof Uint8Array?this.file.byteLength:this.file.size)?[2,{value:null,done:!0}]:(t=new Promise(function(t,e){var r=n.offset+n.chunkSize;if(n.file instanceof Uint8Array)t(new 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r=t.call(this)||this;return r.url=e,r.fileOptions=n,r}return r(n,t),n.prototype.iterator=function(){return i(this,void 0,void 0,function(){return o(this,function(t){return ut(this.url)?[2,new st(this.url,this.fileOptions).iterator()]:[2,function(t,n){return void 0===n&&(n={}),i(this,void 0,void 0,function(){var r,i,u,s;return o(this,function(o){switch(o.label){case 0:return e.ENV.get("IS_BROWSER")?[4,fetch(t)]:[3,5];case 1:return(r=o.sent()).ok?[4,r.blob()]:[3,3];case 2:return i=o.sent(),[2,new ot(i,n)];case 3:throw new Error(r.statusText);case 4:return[3,9];case 5:if(u=require("node-fetch"),"string"!=typeof t)throw new Error("URL must be a string. Request objects are not supported in the node.js environment yet.");return[4,u(t)];case 6:return(r=o.sent()).ok?[4,r.buffer()]:[3,8];case 7:return s=o.sent(),[2,new ot(s,n)];case 8:throw new Error(r.statusText);case 9:return[2]}})})}(this.url,this.fileOptions)]})})},n}(K);t.array=function(t){var e=this;return H(function(){return i(e,void 0,void 0,function(){return o(this,function(e){return[2,C(t)]})})},t.length)},t.Dataset=U,t.zip=function(t){var e,n=this;if(!b(t))throw new Error("The argument to zip() must be an object or array.");if(Array.isArray(t))for(var r=0;r<t.length;r++)e=null==e?t[r].size:Math.min(e,t[r].size);else if(t instanceof Object)for(var u in t)e=null==e?t[u].size:Math.min(e,t[u].size);return H(function(){return i(n,void 0,void 0,function(){var e;return o(this,function(n){switch(n.label){case 0:return[4,w(t,function(t){if(t instanceof U)return{value:t.iterator(),recurse:!1};if(b(t))return{value:null,recurse:!0};throw new Error("Leaves of the structure passed to zip() must be Datasets, not primitives.")})];case 1:return e=n.sent(),[2,(r=e,i=R.SHORTEST,void 0===i&&(i=R.FAIL),new P(r,i))]}var r,i})})},e)},t.CSVDataset=J,t.TextLineDataset=Q,t.csv=function(t,e){return void 0===e&&(e={}),new J(new at(t),e)},t.func=function(t){var e=this,n=E(t);return H(function(){return i(e,void 0,void 0,function(){return o(this,function(t){return[2,n]})})})},t.generator=function(t){var e=this;return H(function(){return i(e,void 0,void 0,function(){var e;return o(this,function(n){switch(n.label){case 0:return[4,t()];case 1:return e=n.sent(),[2,E(function(){return e.next()})]}})})})},t.FileDataSource=st,t.URLDataSource=at,t.version_data="1.0.4",Object.defineProperty(t,"__esModule",{value:!0})});
 //# sourceMappingURL=tf-data.min.js.map

dist/util/deep_map.js

@@ -56,3 +56,2 @@ "use strict";
 var tf = require("@tensorflow/tfjs-core");
-var util_1 = require("util");
 /**
@@ -278,3 +277,3 @@ * Apply a mapping function to a nested structure in a recursive manner.
 function canTensorify(obj) {
-    return obj == null || util_1.isPrimitive(obj) || Array.isArray(obj) ||
+    return obj == null || isPrimitive(obj) || Array.isArray(obj) ||
         (typeof obj === 'object' && (obj instanceof tf.Tensor)) ||
@@ -284,2 +283,10 @@ tf.util.isTypedArray(obj);
 exports.canTensorify = canTensorify;
+/**
+ * Returns true if the given `value` is a primitive type. Otherwise returns
+ * false. This is equivalant to node util.isPrimitive
+ */
+function isPrimitive(value) {
+    return (value === null ||
+        (typeof value !== 'object' && typeof value !== 'function'));
+}
 //# sourceMappingURL=deep_map.js.map

dist/version.d.ts

 /** @license See the LICENSE file. */
-declare const version = "1.0.3";
+declare const version = "1.0.4";
 export { version };

dist/version.js

@@ -5,4 +5,4 @@ "use strict";
 // This code is auto-generated, do not modify this file!
-var version = '1.0.3';
+var version = '1.0.4';
 exports.version = version;
 //# sourceMappingURL=version.js.map

package.json

 {
   "name": "@tensorflow/tfjs-data",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "TensorFlow Data API in JavaScript",
@@ -14,3 +14,3 @@ "private": false,
   "devDependencies": {
-    "@tensorflow/tfjs-core": "1.0.3",
+    "@tensorflow/tfjs-core": "1.0.4",
     "@types/fetch-mock": "^6.0.1",
@@ -56,8 +56,8 @@ "@types/jasmine": "~2.5.53",
   "peerDependencies": {
-    "@tensorflow/tfjs-core": "1.0.3"
+    "@tensorflow/tfjs-core": "1.0.4",
+    "seedrandom": "~2.4.3"
   },
   "dependencies": {
     "@types/node-fetch": "^2.1.2",
-    "node-fetch": "~2.1.2",
-    "seedrandom": "~2.4.3"
+    "node-fetch": "~2.1.2"
   },
@@ -64,0 +64,0 @@ "browser": {

src/util/deep_map.ts

@@ -20,3 +20,2 @@ /**
 import * as tf from '@tensorflow/tfjs-core';
-import {isPrimitive} from 'util';
 
@@ -270,1 +269,11 @@ // tslint:disable:no-any
 }
+
+/**
+ * Returns true if the given `value` is a primitive type. Otherwise returns
+ * false. This is equivalant to node util.isPrimitive
+ */
+function isPrimitive(value: any): boolean {
+  return (
+      value === null ||
+      (typeof value !== 'object' && typeof value !== 'function'));
+}

src/version.ts

 /** @license See the LICENSE file. */
 // This code is auto-generated, do not modify this file!
-const version = '1.0.3';
+const version = '1.0.4';
 export {version};

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Uses eval

Supply chain risk

Package uses dynamic code execution (e.g., eval()), which is a dangerous practice. This can prevent the code from running in certain environments and increases the risk that the code may contain exploits or malicious behavior.

Found 1 instance in 1 package

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Package accesses environment variables, which may be a sign of credential stuffing or data theft.

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Improved metrics

Number of low supply chain risk alerts

5

decreased by-37.5%

Number of medium supply chain risk alerts

4

decreased by-42.86%

Worsened metrics

Total package byte prevSize

1572522

decreased by-8.5%

Lines of code

15275

decreased by-4.44%

Dependency changes

• + Added@tensorflow/tfjs-core@1.0.4(transitive)

• - Removedseedrandom@~2.4.3

• - Removed@tensorflow/tfjs-core@1.0.3(transitive)