Property 'print' does not exist on type 'Tensor<Rank>[]'.

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TensorFlow.js version

0.6.1

Browser version

Describe the problem or feature request

I use Typescript environment (Angular 5)

I trying to run this code from thehttps://js.tensorflow.org/#getting-started

 import * as tf from '@tensorflow/tfjs';

  // Define a model for linear regression.
  const model = tf.sequential();
  model.add(tf.layers.dense({units: 1, inputShape: [1]}));

  // Prepare the model for training: Specify the loss and the optimizer.
  model.compile({loss: 'meanSquaredError', optimizer: 'sgd'});

  // Generate some synthetic data for training.
  const xs = tf.tensor2d([1, 2, 3, 4], [4, 1]);
  const ys = tf.tensor2d([1, 3, 5, 7], [4, 1]);

  // Train the model using the data.
  model.fit(xs, ys).then(() => {
    // Use the model to do inference on a data point the model hasn't seen before:
    model.predict(tf.tensor2d([5], [1, 1])).print();
  });

ERROR in src/app/app.component.ts(29,47): error TS2339: Property 'print' does not exist on type 'Tensor<Rank> | Tensor<Rank>[]'.
  Property 'print' does not exist on type 'Tensor<Rank>[]'.

I think is the model.d.ts file please add the print method inside this file

Code to reproduce the bug / link to feature request

[dsmilkov]

Hi @George35mk

We wrote that example for es6 javascript. For typescript, since predict() can return either a Tensor, or Tensor[], depending on how many outputs your model has, you have to notify the compiler which one it is:

(model.predict(...) as tf.Tensor).print()

Hope this helps!

[grinsteindavid]

const result = model.predict(tf.tensor2d(input, [1, 1])) as tf.Tensor; // this is a tensor

const data = await result.data(); // will return a promise with the Y value ( result )