message: kill tslint error
diff: @@ -19,10 +19,11 @@ function escapeRegExp(str) {
  }
  function regexpAllMatches(str: string, reg: RegExp) {
  - let m
  const res: any[] = []
  - while (m = reg.exec(str)) {
  + let m = reg.exec(str)
  + while (m) {
  res.push(m)
  + m = reg.exec(str)
  }
  return res
  }
  @@ -93,7 +94,7 @@ export class EnvPair {
  if (dir === -1) {
  allMatches = allMatches.reverse()
  }
  - for (let m of allMatches) {
  + for (const m of allMatches) {
  if ((m[1] === 'begin' && dir === 1) || (m[1] === 'end' && dir === -1)) {
  nested += 1
  }
  