export function helper(value) {
  return value.trim();
}

export const makeGreeter = (name) => {
  return `hello ${name}`;
};

export class BrowserThing {
  open(url) {
    return url;
  }
}

export function demo(value, url) {
  const browser = new BrowserThing();
  return helper(browser.open(url ?? value));
}