How to use the @material/textfield/dist/mdc.textfield.min.MDCTextField function in @material/textfield

bind() {
		this.myMdcTextfield = new MDCTextField(this.element.firstElementChild);
		this.myMdcTextfield.disabled = this.disabled;
		this.myMdcTextfield.required = this.required;
	}

attached() {
		this.myMdcTextfield = new MDCTextField(this.element.firstElementChild);
	}

attached() {
        this.myMdcTextfield = new MDCTextField(this.element.firstElementChild);
        this.refreshOptions();
    }

_proto.attached = function attached() {
    this.myMdcTextfield = new _mdcTextfield.MDCTextField(this.element.firstElementChild);
    this.refreshOptions();
  };

attached() {
        this.myMdcTextfield = new MDCTextField(this.element.firstElementChild);
    }

MdcTextarea.prototype.bind = function bind() {
		this.myMdcTextfield = new _mdcTextfield.MDCTextField(this.element.firstElementChild);
		this.myMdcTextfield.disabled = this.disabled;
		this.myMdcTextfield.required = this.required;
	};

MdcTextField.prototype.attached = function attached() {
		this.myMdcTextfield = new _mdcTextfield.MDCTextField(this.element.firstElementChild);
	};

attached() {
        this.myMdcTextfield = new MDCTextField(this.element.firstElementChild);
        this.myMdcTextfield.disabled = this.disabled;
        this.myMdcTextfield.required = this.required;

        if (this.value) {
            this.myMdcTextfield.value = this.value;
        }
    }

_proto.attached = function attached() {
    this.myMdcTextfield = new _mdcTextfield.MDCTextField(this.element.firstElementChild);
    this.myMdcTextfield.disabled = this.disabled;
    this.myMdcTextfield.required = this.required;

    if (this.value) {
      this.myMdcTextfield.value = this.value;
    }
  };