message: refactor(devtools): type returns of insertion trie methods
diff: @@ -8,7 +8,7 @@ interface NumberTrie {
  export class InsertionTrie {
  private _insertionTrie: NumberTrie = {};
  - insert(pos: ElementPosition) {
  + insert(pos: ElementPosition): void {
  if (!pos.length) {
  return;
  }
  @@ -22,7 +22,7 @@ export class InsertionTrie {
  current[pos[pos.length - 1]].end = true;
  }
  - exists(pos: ElementPosition) {
  + exists(pos: ElementPosition): boolean {
  if (!pos.length) {
  return true;
  }
  