import { LogoGenerator, nowayu } from "dearu-logo-generator";

// or

const { LogoGenerator, nowayu } = require("dearu-logo-generator");

const lg = new LogoGenerator(nowayu, "horizontal");

const svg = lg.generate(
  "乃木若葉は",
  "勇者である",
  [{ line: 1, start: 0, end: 1 }],
  false
);

console.log(svg.outerHTML); // <svg viewBox="0 0 1280 720" xmlns=...