Function removeDuplicateChars

pages/options.js:254–264

(str)

}

function removeDuplicateChars(str) {
  const seen = new Set();
  let result = "";
  for (let char of str) {
    if (!seen.has(char)) {
      result += char;
      seen.add(char);
    }
  }
  return result;
}

export async function saveOptions() {
  const hasErrors = showValidationErrors();