Gets the current backend. If no backends have been initialized, this will
attempt to initialize the best backend. Will throw an error if the highest
priority backend has async initialization, in which case you should call
'await tf.ready()' before running other code.
Gets the current backend. If no backends have been initialized, this will attempt to initialize the best backend. Will throw an error if the highest priority backend has async initialization, in which case you should call 'await tf.ready()' before running other code.