Merge #1817

1817: Update eslint to the latest version 🚀 r=jniles


## Version **4.1.0** of [eslint](https://github.com/eslint/eslint) just got published.

<table>
  <tr>
    <th align=left>
      Dependency
    </td>
    <td>
      eslint
    </td>
  </tr>
  <tr>
    <th align=left>
      Current Version
    </td>
    <td>
      3.19.0
    </td>
  </tr>
  <tr>
    <th align=left>
      Type
    </td>
    <td>
      devDependency
    </td>
  </tr>
</table>

The version **4.1.0** is **not covered** by your **current version range**.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of eslint.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.


---


<details>
<summary>Release Notes</summary>
<strong>v4.1.0</strong>

<ul>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/e8f1362ab640c883a5d296e951308fab22073e7f" class="commit-link"><tt>e8f1362</tt></a> Docs: Remove wrong descriptions in <code>padded-block</code> rule (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8783" class="issue-link js-issue-link" data-url="eslint/eslint#8783" data-id="237771100" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8783</a>) (Plusb Preco)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/291a78302c1d5d402c6582b3f4cc836e61fde787" class="commit-link"><tt>291a783</tt></a> Update: <code>enforceForArrowConditionals</code> to <code>no-extra-parens</code> (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/6196" class="issue-link js-issue-link" data-url="eslint/eslint#6196" data-id="155067290" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#6196</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8439" class="issue-link js-issue-link" data-url="eslint/eslint#8439" data-id="220697521" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8439</a>) (Evilebot Tnawi)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/a21dd32c46f95bc232a67929c224824692f94b70" class="commit-link"><tt>a21dd32</tt></a> New: Add <code>overrides</code>/<code>files</code> options for glob-based config (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/3611" class="issue-link js-issue-link" data-url="eslint/eslint#3611" data-id="104053558" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#3611</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8081" class="issue-link js-issue-link" data-url="eslint/eslint#8081" data-id="207675247" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8081</a>) (Sylvan Mably)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/879688ce96f80aa0692f732759c6f67a0c36c4c3" class="commit-link"><tt>879688c</tt></a> Update: Add ignoreComments option to no-trailing-spaces (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8061" class="issue-link js-issue-link" data-url="eslint/eslint#8061" data-id="206865549" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8061</a>) (Jake Roussel)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/b58ae2e6d6bd4662b549ca5c0472943055a74df8" class="commit-link"><tt>b58ae2e</tt></a> Chore: Only instantiate fileEntryCache when cache flage set (perf) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8763" class="issue-link js-issue-link" data-url="eslint/eslint#8763" data-id="236756225" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8763</a>) (Gyandeep Singh)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/98512881f1fc2417011247931fa089d987ee8cc6" class="commit-link"><tt>9851288</tt></a> Update: fix indent errors on multiline destructure (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/8729" class="issue-link js-issue-link" data-url="eslint/eslint#8729" data-id="235733166" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8729</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8756" class="issue-link js-issue-link" data-url="eslint/eslint#8756" data-id="236673913" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8756</a>) (Victor Hom)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/3608f06c2a412587c2d05dec0297803b25f3e630" class="commit-link"><tt>3608f06</tt></a> Docs: Increase visibility of code of conduct (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/8758" class="issue-link js-issue-link" data-url="eslint/eslint#8758" data-id="236687424" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8758</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8764" class="issue-link js-issue-link" data-url="eslint/eslint#8764" data-id="236758243" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8764</a>) (Kai Cataldo)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/673a58bc8420075ba698cee6762e17322a5263c3" class="commit-link"><tt>673a58b</tt></a> Update: support multiple fixes in a report (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/7348" class="issue-link js-issue-link" data-url="eslint/eslint#7348" data-id="182620143" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#7348</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8101" class="issue-link js-issue-link" data-url="eslint/eslint#8101" data-id="208681921" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8101</a>) (Toru Nagashima)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/7a1bc3893ab55d0ab16ccf4b7a62c85329ab4007" class="commit-link"><tt>7a1bc38</tt></a> Fix: don't pass default parserOptions to custom parsers (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/8744" class="issue-link js-issue-link" data-url="eslint/eslint#8744" data-id="236336414" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8744</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8745" class="issue-link js-issue-link" data-url="eslint/eslint#8745" data-id="236373829" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8745</a>) (Teddy Katz)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/c5b405280409698d14b62cbf3c87b7cf6cf71391" class="commit-link"><tt>c5b4052</tt></a> Chore: enable computed-property-spacing on ESLint codebase (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8760" class="issue-link js-issue-link" data-url="eslint/eslint#8760" data-id="236699991" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8760</a>) (Teddy Katz)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/3419f6446e205d79d9db77f6c176b9167d1fd8a7" class="commit-link"><tt>3419f64</tt></a> Docs: describe how to use formatters on the formatter demo page (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8754" class="issue-link js-issue-link" data-url="eslint/eslint#8754" data-id="236645523" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8754</a>) (Teddy Katz)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/a3ff8f21106cf8eca55978d4b3e053973f5e1bf2" class="commit-link"><tt>a3ff8f2</tt></a> Chore: combine tests in tests/lib/eslint.js and tests/lib/linter.js (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8746" class="issue-link js-issue-link" data-url="eslint/eslint#8746" data-id="236375849" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8746</a>) (Teddy Katz)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/b7cc1e6fe995d52e581fcb2b1a44e37a18680e90" class="commit-link"><tt>b7cc1e6</tt></a> Fix: Space-infix-ops should ignore type annotations in TypeScript (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8341" class="issue-link js-issue-link" data-url="eslint/eslint#8341" data-id="217102387" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8341</a>) (Reyad Attiyat)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/46e73eea69abc2ba80bb1397c6779b8789dbd385" class="commit-link"><tt>46e73ee</tt></a> Fix: eslint --init installs wrong dependencies of popular styles (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/7338" class="issue-link js-issue-link" data-url="eslint/eslint#7338" data-id="182134634" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#7338</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8713" class="issue-link js-issue-link" data-url="eslint/eslint#8713" data-id="235217725" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8713</a>) (Toru Nagashima)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/a82361b65699653761436a2e9acc7f485c827ca0" class="commit-link"><tt>a82361b</tt></a> Chore: Prevent package-lock.json files from being created (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/8742" class="issue-link js-issue-link" data-url="eslint/eslint#8742" data-id="236292937" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8742</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8747" class="issue-link js-issue-link" data-url="eslint/eslint#8747" data-id="236397701" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8747</a>) (Teddy Katz)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/5f81a68a3904a559764872e3f0c7453865a6c6dc" class="commit-link"><tt>5f81a68</tt></a> New: Add eslintIgnore support to package.json (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/8458" class="issue-link js-issue-link" data-url="eslint/eslint#8458" data-id="221689525" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8458</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8690" class="issue-link js-issue-link" data-url="eslint/eslint#8690" data-id="233757916" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8690</a>) (Victor Hom)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/b5a70b4e8c20dc1ea3e31137706fc20da339f379" class="commit-link"><tt>b5a70b4</tt></a> Update: fix multiline binary operator/parentheses indentation (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8719" class="issue-link js-issue-link" data-url="eslint/eslint#8719" data-id="235421314" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8719</a>) (Teddy Katz)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/ab8b0167bdaf3b8851eab3fbc2769f2bdd71677b" class="commit-link"><tt>ab8b016</tt></a> Update: fix MemberExpression indentation with "off" option (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/8721" class="issue-link js-issue-link" data-url="eslint/eslint#8721" data-id="235434741" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8721</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8724" class="issue-link js-issue-link" data-url="eslint/eslint#8724" data-id="235459105" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8724</a>) (Teddy Katz)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/eb5d12c15a32084907f1c58bcbec721b5008495d" class="commit-link"><tt>eb5d12c</tt></a> Update: Add Fixer method to Linter API (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8631" class="issue-link js-issue-link" data-url="eslint/eslint#8631" data-id="230242473" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8631</a>) (Gyandeep Singh)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/26a2daab311c8c59942c52f436d380a195db2bd4" class="commit-link"><tt>26a2daa</tt></a> Chore: Cache fs reads in ignored-paths (fixes <a href="https://urls.greenkeeper.io/eslint/eslint/issues/8363" class="issue-link js-issue-link" data-url="eslint/eslint#8363" data-id="218136776" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8363</a>) (<a href="https://urls.greenkeeper.io/eslint/eslint/pull/8706" class="issue-link js-issue-link" data-url="eslint/eslint#8706" data-id="235004396" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8706</a>) (Victor Hom)</li>
</ul>
</details>

<details>
<summary>Commits</summary>
<p>The new version differs by 141 commits.</p>
<ul>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/7d9e3beeb58c1ee71d53dfcfd3e3b0721dd79b46"><code>7d9e3be</code></a> <code>4.1.0</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/e727b7bdfcfb0564aabd713b32364e6f4afcfeec"><code>e727b7b</code></a> <code>Build: changelog update for 4.1.0</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/e8f1362ab640c883a5d296e951308fab22073e7f"><code>e8f1362</code></a> <code>Docs: Remove wrong descriptions in <code>padded-block</code> rule (#8783)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/291a78302c1d5d402c6582b3f4cc836e61fde787"><code>291a783</code></a> <code>Update: <code>enforceForArrowConditionals</code> to <code>no-extra-parens</code> (fixes #6196) (#8439)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/a21dd32c46f95bc232a67929c224824692f94b70"><code>a21dd32</code></a> <code>New: Add <code>overrides</code>/<code>files</code> options for glob-based config (fixes #3611) (#8081)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/879688ce96f80aa0692f732759c6f67a0c36c4c3"><code>879688c</code></a> <code>Update: Add ignoreComments option to no-trailing-spaces (#8061)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/b58ae2e6d6bd4662b549ca5c0472943055a74df8"><code>b58ae2e</code></a> <code>Chore: Only instantiate fileEntryCache when cache flage set (perf) (#8763)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/98512881f1fc2417011247931fa089d987ee8cc6"><code>9851288</code></a> <code>Update: fix indent errors on multiline destructure (fixes #8729) (#8756)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/3608f06c2a412587c2d05dec0297803b25f3e630"><code>3608f06</code></a> <code>Docs: Increase visibility of code of conduct (fixes #8758) (#8764)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/673a58bc8420075ba698cee6762e17322a5263c3"><code>673a58b</code></a> <code>Update: support multiple fixes in a report (fixes #7348) (#8101)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/7a1bc3893ab55d0ab16ccf4b7a62c85329ab4007"><code>7a1bc38</code></a> <code>Fix: don't pass default parserOptions to custom parsers (fixes #8744) (#8745)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/c5b405280409698d14b62cbf3c87b7cf6cf71391"><code>c5b4052</code></a> <code>Chore: enable computed-property-spacing on ESLint codebase (#8760)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/3419f6446e205d79d9db77f6c176b9167d1fd8a7"><code>3419f64</code></a> <code>Docs: describe how to use formatters on the formatter demo page (#8754)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/a3ff8f21106cf8eca55978d4b3e053973f5e1bf2"><code>a3ff8f2</code></a> <code>Chore: combine tests in tests/lib/eslint.js and tests/lib/linter.js (#8746)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/b7cc1e6fe995d52e581fcb2b1a44e37a18680e90"><code>b7cc1e6</code></a> <code>Fix: Space-infix-ops should ignore type annotations in TypeScript (#8341)</code></li>
</ul>
<p>There are 141 commits in total.</p>
<p>See the <a href="https://urls.greenkeeper.io/eslint/eslint/compare/421aab44a9c167c82210bed52f68cf990b7edbea...7d9e3beeb58c1ee71d53dfcfd3e3b0721dd79b46">full diff</a></p>
</details>

<details>
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</details>


---


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package.json

@@ -81,7 +81,7 @@
     "chai-spies": "^0.7.1",
     "commitizen": "^2.9.6",
     "cz-conventional-changelog": "^2.0.0",
-    "eslint": "^3.15.0",
+    "eslint": "^4.1.0",
     "eslint-config-airbnb-base": "^11.1.0",
     "eslint-plugin-import": "^2.2.0",
     "gulp": "^3.9.1",