message: auto unindent fix
diff: @@ -48,6 +48,12 @@ async function fetchIDL(source: IDLSource) {
  */
  function trimCommonIndentation(text: string) {
  const lines = text.split("\n");
  + if (!lines[0].trim()) {
  + lines.shift();
  + }
  + if (!lines[lines.length - 1].trim()) {
  + lines.pop();
  + }
  const commonIndentation = Math.min(...lines.map(getIndentation));
  return lines.map(line => line.slice(commonIndentation)).join("\n");
  }
  