### What problem does this PR solve? Introduced [beartype](https://github.com/beartype/beartype) for runtime type-checking. ### Type of change - [x] New Feature (non-breaking change which adds functionality)
Signed-off-by: Jin Hai <haijin.chn@gmail.com>
### What problem does this PR solve? #1594 ### Type of change - [x] New Feature (non-breaking change which adds functionality)