Function getScript

test/async-script-loader-spec.js:13–21

(URL, toBoolean = false)

}

const getScript = (URL, toBoolean = false) => {
  const scripTags = document.getElementsByTagName("script");
  for (let i = 0; i < scripTags.length; i += 1) {
    if (scripTags[i].src.indexOf(URL) > -1) {
      return toBoolean ? true : scripTags[i];
    }
  }
  return toBoolean ? false : undefined;
};

const hasScript = URL => getScript(URL, true);