custom.jsx

import { field, TextInput } from 'a-plus-forms';

@field()
class PhoneInput extends React.Component {
  onChange = (text) => {
    const phoneNumber = format(text); // to phone number
    this.props.onChange(phoneNumber);
  }
  
  render() {
    return <TextInput {...this.props} onChange={this.onChange} />;
  }
}