message: assert hints is na array
diff: @@ -64,7 +64,7 @@ class BranchUpdate {
  async _updateContent(hints) {
  let schema = await this.schema();
  - let types = hints ? hints.map(hint => hint.type).filter(type => Boolean(type)) : [];
  + let types = hints && Array.isArray(hints) ? hints.map(hint => hint.type).filter(type => Boolean(type)) : [];
  let updaters = Object.entries(this.updaters);
  let dataSourceIds = types.map(type => {
  