Deprecated dependency on version 7.4.4 of @babel/polyfill

[amimas]

Hello,

I'm running this rule on a fresh setup and got the following warning about a deprecated dependency.

yarn install v1.13.0
warning package.json: No license field
warning No license field
[1/4] Resolving packages...
warning textlint-rule-no-dead-relative-link > @babel/polyfill@7.4.4: 🚨 As of Babel 7.4.0, this
package has been deprecated in favor of directly
including core-js/stable (to polyfill ECMAScript
features) and regenerator-runtime/runtime
(needed to use transpiled generator functions):

  > import "core-js/stable";
  > import "regenerator-runtime/runtime";
[2/4] Fetching packages...
[3/4] Linking dependencies...
warning "markdown-spellcheck > sinon-as-promised@4.0.3" has unmet peer dependency "sinon@1".
[4/4] Building fresh packages...
success Saved lockfile.
Done in 22.19s.