@itwin/itwinui-react/esm/utils/functions/import.js

A react component library for iTwinUI

export const importCss = async (url) => {
  try {
    return await new Function(
      `return import("${url}", { with: { type: "css" } })`,
    )();
  } catch {
    try {
      return await new Function(
        `return import("${url}", { assert: { type: "css" } })`,
      )();
    } catch {
      return await fetch(url)
        .then((res) => res.text())
        .then((cssText) => {
          let stylesheet = new CSSStyleSheet();
          stylesheet.replaceSync(cssText);
          return {
            default: stylesheet,
          };
        });
    }
  }
};