owncast/web/utils/urls.ts

// to use with <input type="url"> fields, as the default pattern only checks for `:`,
export const DEFAULT_TEXTFIELD_URL_PATTERN = 'https?://.*';

export default function isValidUrl(url: string): boolean {
  const validProtocols = ['http:', 'https:'];

  try {
    const validationObject = new URL(url);
    if (
      validationObject.protocol === '' ||
      validationObject.hostname === '' ||
      !validProtocols.includes(validationObject.protocol)
    ) {
      return false;
    }
  } catch (e) {
    return false;
  }

  return true;
}