Update @types/node to the latest version 🚀

[greenkeeper[bot]]

Version 9.3.0 of @types/node was just published.

Dependency	@types/node
Current Version	8.5.8
Type	devDependency

The version 9.3.0 is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

It might be worth looking into these changes and trying to get this project onto the latest version of @types/node.

If you have a solid test suite and good coverage, a passing build is a strong indicator that you can take advantage of these changes directly by merging the proposed change into your project. If the build fails or you don’t have such unconditional trust in your tests, this branch is a great starting point for you to work on the update.

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Your Greenkeeper bot :palm_tree:

[coveralls]

Coverage remained the same at 95.035% when pulling aa0501b9aadbdfa2e5d4478766afa93dbbb6c1ca on greenkeeper/@types/node-9.3.0 into 54b3c094a1bc56ddc052d44ee411086fd071056a on master.

[coveralls]

Coverage remained the same at 95.035% when pulling aa0501b9aadbdfa2e5d4478766afa93dbbb6c1ca on greenkeeper/@types/node-9.3.0 into 54b3c094a1bc56ddc052d44ee411086fd071056a on master.