export async function findTalerUriInActiveTab(): Promise<string | undefined> {
  return new Promise((resolve, reject) => {
    chrome.tabs.executeScript(
      {
        code: `
        (() => {
          let x = document.querySelector("a[href^='taler://'") || document.querySelector("a[href^='taler+http://'");
          return x ? x.href.toString() : null;
        })();
        `,
        allFrames: false,
      },
      (result) => {
        if (chrome.runtime.lastError) {
          console.error(chrome.runtime.lastError);
          resolve(undefined);
          return;
        }
        resolve(result[0]);
      },
    );
  });
}