copyToClipboard.ts

export default async function copyToClipboard(str: string) {
  if (navigator?.clipboard) {
    return navigator.clipboard.writeText(str);
  }

  if (document?.execCommand) {
    const el = document.createElement('textarea');
    el.value = str;
    el.setAttribute('readonly', '');
    el.style.position = 'absolute';
    el.style.left = '-9999px';
    document.body.appendChild(el);
    el.select();
    const execCopyResult = document.execCommand('copy');
    document.body.removeChild(el);
    return execCopyResult ? Promise.resolve() : Promise.reject();
  }

  return Promise.reject();
}