Method iterator

tfjs-data/src/dataset_test.ts:277–283

()

    class CustomDataset extends tfd.Dataset<{}> {
      state = {val: 1};
      async iterator() {
        const result = iteratorFromItems([
          {'item': this.state.val++}, {'item': this.state.val++},
          {'item': this.state.val++}
        ]);
        return result;
      }
    }
    const a = new CustomDataset();
    await a.repeat().take(1234).toArrayForTest();