Extend jsx-jcs-no-undef to work with <With />

[martinmacko47]

We have just added <With /> statement to jsx-control-statements. We need to extend jsx-jcs-no-undef rule to work with variables declared by the new statement. I'll create a PR for it.

Usage of the With statement:

    <For each="item" of={this.props.items}>
      <With value={computeValue(item)}>
        <Choose>
          <When condition={item.path}>
            <Link to={item.path}>{value}</Link>
          </When>
          <Otherwise>
            {value}
          </Otherwise>
        </Choose>
      </With>
    </For>

[martinmacko47]

@vkbansal Could somebody please review PR #19?

[vkbansal]

I've approved it. But the build is failing.

Also I'm looking for maintainers.

[martinmacko47]

I'll try to fix CI errors. But they seem to be happening before the PR as well.

As for maintaining, I'm not sure I understand eslint-plugin-jsx-control-statements nor jsx-control-statements good enough to be able to maintain it.

[martinmacko47]

@vkbansal I've fixed CI errors, but they were definitelly independent of with control statements changes. So I put the test fix into a separate commit.

If you are ok with the changes, please merge the change a release a new version of the package to npm. Thanks

[vkbansal]

done