**What kind of change does this PR introduce?**

- [ ] Bugfix
- [ ] Feature
- [ ] Code style update
- [ ] Refactor
- [ ] Build-related changes
- [ ] Other, please describe:

**Does this PR introduce a breaking change?**

- [ ] Yes
- [ ] No

If yes, please describe the impact and migration path for existing applications:

**The PR fulfills these requirements:**

- [ ] It's submitted to the `dev` branch, not the `master` branch
- [ ] comply with the ESLint configuration of [Standard](http://standardjs.com)
- [ ] Rebase before creating a PR to keep commit history clear
- [ ] When resolving a specific issue, it's referenced in the PR's title (e.g. fix #xxx[,#xxx], where "xxx" is the issue number)
- [ ] All tests are passing

**Other information:**