text: Title: An in-range update of prettier is breaking the build 🚨
  Body: 
  ## The dependency [prettier](https://github.com/prettier/prettier) was updated from `1.14.2` to `1.14.3`.
  
  🚨 [View failing branch](https://github.com/plotly/dash-core-components/compare/master...plotly:greenkeeper%2Fprettier-1.14.3).
  
  This version is **covered** by your **current version range** and after updating it in your project **the build failed**.
  
  
  
  
  prettier is a direct dependency of this project, and **it is very likely causing it to break**. If other packages depend on yours, this update is probably also breaking those in turn.
  
  
  
  <details>
  <summary>Status Details</summary>
  
  - ✅ **ci/circleci: python-2.7:** Your tests passed on CircleCI! ([Details](https://circleci.com/gh/plotly/dash-core-components/1262?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link)).
  - ❌ **percy/dash-core-components:** 2 visual changes need review ([Details](https://percy.io/plotly/dash-core-components/builds/1019778?utm_campaign=plotly&utm_content=dash-core-components&utm_source=github_status)).
  - ✅ **ci/circleci: python-3.7:** Your tests passed on CircleCI! ([Details](https://circleci.com/gh/plotly/dash-core-components/1263?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link)).
  - ✅ **ci/circleci: python-3.6:** Your tests passed on CircleCI! ([Details](https://circleci.com/gh/plotly/dash-core-components/1264?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link)).
  </details>
  
  
  ---
  
  <details>
  <summary>Release Notes for 1.14.3</summary>
  
  <p><g-emoji class="g-emoji" alias="link" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/1f517.png">🔗</g-emoji> <a href="https://urls.greenkeeper.io/prettier/prettier/blob/master/CHANGELOG.md#1143"><strong>Changelog</strong></a></p>
  </details>
  
  
  
  <details>
  <summary>FAQ and help</summary>
  
  There is a collection of [frequently asked questions](https://greenkeeper.io/faq.html). If those don’t help, you can always [ask the humans behind Greenkeeper](https://github.com/greenkeeperio/greenkeeper/issues/new).
  </details>
  
  ---
  
  
  Your [Greenkeeper](https://greenkeeper.io) Bot :palm_tree:
  