belsrc/worker-promise

## Proposed changes

Describe the big picture of your changes here to communicate to the maintainers why we should accept this pull request.
If it fixes a bug or resolves a feature request, be sure to link to that issue.

## Pull request checklist

Before you submit a pull request, please make sure you have to following:

- [ ] Tests for the relevant changes have been added
- [ ] All new and existing tests passed
- [ ] Linting check passed
- [ ] Docs have been reviewed and added / updated if needed
- [ ] Your commits messages format follows the [Conventional Commits standard format](https://www.conventionalcommits.org/en/v1.0.0-beta.4/)

## Pull request type

Please check the type of change your PR introduces:

- [ ] Bugfix
- [ ] Feature
- [ ] Refactoring (no functional changes, no api changes)
- [ ] Build related changes
- [ ] Documentation content changes
- [ ] Other (please describe):

## Does this introduce a breaking change?

- [ ] Yes
- [ ] No

## Further comments or other information