Add exports to remove importing from dist in other packages.

src/index.ts

@@ -53,11 +53,13 @@ export {MomentumOptimizer} from './optimizers/momentum_optimizer';
 export {Optimizer} from './optimizers/optimizer';
 export {RMSPropOptimizer} from './optimizers/rmsprop_optimizer';
 export {SGDOptimizer} from './optimizers/sgd_optimizer';
-export {Scalar, Tensor, Tensor1D, Tensor2D, Tensor3D, Tensor4D, TensorBuffer, variable, Variable} from './tensor';
+export {Scalar, Tensor, Tensor1D, Tensor2D, Tensor3D, Tensor4D, Tensor5D, TensorBuffer, variable, Variable} from './tensor';
 export {GradSaveFunc, NamedTensorMap, TensorContainer, TensorContainerArray, TensorContainerObject} from './tensor_types';
-export {DataType, DataTypeMap, DataValues, Rank, ShapeMap, TensorLike} from './types';
+export {BackendValues, DataType, DataTypeMap, DataValues, Rank, ShapeMap, TensorLike, upcastType} from './types';
 
 export * from './ops/ops';
+export {Conv2DInfo, Conv3DInfo} from './ops/conv_util';
+export {Activation} from './ops/fused_util';
 export {LSTMCellFunc} from './ops/lstm';
 export {Reduction} from './ops/loss_ops';
 
@@ -69,6 +71,8 @@ export {TimingInfo} from './engine';
 export {ENV, Environment} from './environment';
 export {Platform} from './platforms/platform';
 
+export {EPSILON_FLOAT32} from './backends/backend';
+
 export {version as version_core};
 
 // Top-level method exports.