allow indeterminate numbers and letters

[henriqueweiand]

I need to leave the input free for the indeterminate amount of digits or letters, is it possible in lib?

[JandersonConstantino]

Please, check if this resolves your issue:

<InputMask mask=''
  maskChar={null}
  value={this.state.value}
  onChange={this.onChange}
/>

[quantizor]

I think the goal is probably something more like this:

<InputMask mask='$' />

With any amount of characters after the dollar sign, etc.