Add exports to remove importing from dist in other packages.

src/backends/backend_util.ts

@@ -23,11 +23,15 @@ import {hasEncodingLoss, makeZerosTypedArray} from '../util';
 
 import {KernelBackend} from './backend';
 
+export {EPSILON_FLOAT32} from './backend';
+
 // Utilities needed by backend consumers of tf-core.
 export * from '../ops/axis_util';
 export * from '../ops/broadcast_util';
 export * from '../ops/concat_util';
 export * from '../ops/conv_util';
+export {Activation} from '../ops/fused_util';
+
 export {TypedArray, upcastType, PixelData} from '../types';
 export {MemoryInfo, TimingInfo} from '../engine';
 

src/index.ts

@@ -53,9 +53,9 @@ 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} from './types';
 
 export * from './ops/ops';
 export {LSTMCellFunc} from './ops/lstm';