How to use the @material/line-ripple/component.MDCLineRipple function in @material/line-ripple

        if (lineRippleFactory === void 0) { lineRippleFactory = function (el) { return new MDCLineRipple(el); }; }
        if (outlineFactory === void 0) { outlineFactory = function (el) { return new MDCNotchedOutline(el); }; }

        if (lineRippleFactory === void 0) { lineRippleFactory = function (el) { return new MDCLineRipple(el); }; }
        if (helperTextFactory === void 0) { helperTextFactory = function (el) { return new MDCTextFieldHelperText(el); }; }

      lineRippleFactory: MDCLineRippleFactory = (el) => new MDCLineRipple(el),
      outlineFactory: MDCNotchedOutlineFactory = (el) => new MDCNotchedOutline(el),

      lineRippleFactory: MDCLineRippleFactory = (el) => new MDCLineRipple(el),
      helperTextFactory: MDCTextFieldHelperTextFactory = (el) => new MDCTextFieldHelperText(el),