Removing element from array in component state

Question

I am trying to find the best way to remove an element from an array in the state of a component. Since I should not modify the this.state variable directly, is

Answer 1

The cleanest way to do this that I've seen is with filter:

removeItem(index) {
  this.setState({
    data: this.state.data.filter((_, i) => i !== index)
  });
}