This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

fixes #320

Breaking Changes

Yes

Additional Info

/cc @lydell

Here right example:

if(module.hot.data) {
  if(!equal(module.hot.data.locals, locals)) {
    // Continue bubbling when we detect locals doesn't match
    module.hot.setUnhandled();
  }
}

module.hot.accept();
module.hot.dispose(data => {
  data.locals = locals;
});

but now we don't have module.hot.setUnhandled api, we will try implement this for webpack@5 (but we have many tasks), now i jest revert this PR, because it is break hot reloading in many cases (include hot-react-loader)