Function isLazyIteratorObject

tfjs-layers/src/engine/training_dataset.ts:528–531

(iterator: Dataset<T>|
                                 LazyIterator<T>)

// Check if provided object is a LazyIterator object by checking it's .next
// element.
function isLazyIteratorObject<T>(iterator: Dataset<T>|
                                 LazyIterator<T>): boolean {
  return (typeof (iterator as LazyIterator<T>).next === 'function');
}

export async function evaluateDataset<T>(
    // Type `model` as `any` here to avoid circular dependency w/