Upgrade eslint (#9449)

Backports PR #9357

**Commit 1:**
upgrade eslint, all related deps, and config files

* Original sha: 054e798
* Authored by spalger <email@spalger.com> on 2016-08-24T23:39:11Z
* Committed by spalger <spalger@users.noreply.github.com> on 2016-12-02T23:04:20Z

**Commit 2:**
replace gruntify-eslint with basic eslint-cli wrapper

* Original sha: 71732e7
* Authored by spalger <email@spalger.com> on 2016-09-02T21:33:02Z
* Committed by spalger <spalger@users.noreply.github.com> on 2016-12-02T23:41:36Z

**Commit 3:**
arrow-IIFEs must be invoked outside of the parens

* Original sha: b05662c
* Authored by spalger <email@spalger.com> on 2016-08-25T17:47:57Z
* Committed by spalger <spalger@users.noreply.github.com> on 2016-12-02T23:41:40Z

**Commit 4:**
move import statements before their use

* Original sha: 3572ab8
* Authored by spalger <email@spalger.com> on 2016-08-25T17:48:30Z
* Committed by spalger <spalger@users.noreply.github.com> on 2016-12-02T23:41:40Z

**Commit 5:**
reindent to satisfy new indentation check algorithm

* Original sha: b31dae1
* Authored by spalger <email@spalger.com> on 2016-08-25T17:49:47Z
* Committed by spalger <spalger@users.noreply.github.com> on 2016-12-02T23:41:58Z

**Commit 6:**
place missing semicolon

* Original sha: 7b39475
* Authored by spalger <email@spalger.com> on 2016-09-06T22:27:10Z
* Committed by spalger <spalger@users.noreply.github.com> on 2016-12-02T23:42:04Z

**Commit 7:**
ignore copy-pasted decode geohash code

* Original sha: 3c02df9
* Authored by spalger <email@spalger.com> on 2016-09-10T01:49:42Z
* Committed by spalger <spalger@users.noreply.github.com> on 2016-12-02T23:42:04Z

**Commit 8:**
Merge branch 'master' of github.com:elastic/kibana into upgrade/eslint-try2

* Original sha: 1224b18
* Authored by spalger <spalger@users.noreply.github.com> on 2016-12-10T04:14:32Z

**Commit 9:**
[grunt/eslint] fix argument spacing

* Original sha: 6fa2c6c
* Authored by spalger <spalger@users.noreply.github.com> on 2016-12-10T04:22:42Z

**Commit 10:**
[gurnt/eslint] add comment about contents of report

* Original sha: 71834ca
* Authored by spalger <spalger@users.noreply.github.com> on 2016-12-10T07:59:11Z

**Commit 11:**
Merge branch 'master' of github.com:elastic/kibana into upgrade/eslint-try2

* Original sha: 76e77a7
* Authored by spalger <spalger@users.noreply.github.com> on 2016-12-12T20:17:05Z

**Commit 12:**
[grunt/tasks] use `export default`

* Original sha: 803c0da
* Authored by spalger <spalger@users.noreply.github.com> on 2016-12-12T20:19:27Z

Author: elastic-jasper

.eslintignore

@@ -1,5 +1,9 @@
+/optimize
+/src/fixtures/vislib/mock_data
+/src/ui/public/angular-bootstrap
+/test/fixtures/scenarios
+/src/core_plugins/console/public/webpackShims
+/src/core_plugins/console/public/tests/webpackShims
 /src/core_plugins/timelion/bower_components
 /src/core_plugins/timelion/vendor_components
-test/fixtures/scenarios
-optimize
-test/fixtures/scenarios
+/src/ui/public/utils/decode_geo_hash.js

.eslintrc

@@ -1,2 +1,8 @@
 ---
 extends: '@elastic/kibana'
+rules:
+  no-unused-vars: off
+  no-var: off
+  prefer-const: off
+  no-extra-semi: off
+  quotes: off

Gruntfile.js

@@ -38,18 +38,6 @@ module.exports = function (grunt) {
         ' * Copyright (c) <%= grunt.template.today("yyyy") %> <%= package.author.company %>;' +
         ' Licensed <%= package.license %> */\n'
     },
-
-    lintThese: [
-      'Gruntfile.js',
-      '<%= root %>/tasks/**/*.js',
-      '<%= root %>/test/**/*.js',
-      '<%= src %>/**/*.js',
-      '!<%= src %>/ui/public/angular-bootstrap/**/*.js',
-      '!<%= src %>/core_plugins/timelion/bower_components/**/*.js',
-      '!<%= src %>/core_plugins/timelion/vendor_components/**/*.js',
-      '!<%= src %>/fixtures/**/*.js',
-      '!<%= root %>/test/fixtures/scenarios/**/*.js'
-    ]
   };
 
   grunt.config.merge(config);

package.json

@@ -165,17 +165,17 @@
     "wreck": "6.2.0"
   },
   "devDependencies": {
-    "@elastic/eslint-config-kibana": "0.0.3",
+    "@elastic/eslint-config-kibana": "0.2.1",
     "angular-mocks": "1.4.7",
     "auto-release-sinon": "1.0.3",
-    "babel-eslint": "4.1.8",
+    "babel-eslint": "6.1.2",
     "chai": "3.5.0",
     "cheerio": "0.22.0",
     "chokidar": "1.6.0",
     "chromedriver": "2.24.1",
     "elasticdump": "2.1.1",
-    "eslint": "1.10.3",
-    "eslint-plugin-mocha": "1.1.0",
+    "eslint": "3.11.1",
+    "eslint-plugin-mocha": "4.7.0",
     "event-stream": "3.3.2",
     "expect.js": "0.3.1",
     "faker": "1.1.0",
@@ -189,7 +189,6 @@
     "grunt-karma": "2.0.0",
     "grunt-run": "0.6.0",
     "grunt-simple-mocha": "0.4.0",
-    "gruntify-eslint": "1.0.1",
     "gulp-sourcemaps": "1.7.3",
     "handlebars": "4.0.5",
     "husky": "0.8.1",

src/cli/cluster/__tests__/_mock_cluster_fork.js

@@ -24,7 +24,7 @@ export default class MockClusterFork extends EventEmitter {
             dead = true;
             this.emit('exit');
             cluster.emit('exit', this, this.exitCode || 0);
-          }());
+          })();
         }),
       },
       isDead: sinon.spy(() => dead),
@@ -39,6 +39,6 @@ export default class MockClusterFork extends EventEmitter {
       await wait();
       dead = false;
       this.emit('online');
-    }());
+    })();
   }
 }

src/cli/cluster/cluster_manager.js

@@ -86,19 +86,16 @@ module.exports = class ClusterManager {
     const chokidar = require('chokidar');
     const fromRoot = require('../../utils/from_root');
 
-    const watchPaths = uniq(
-      [
-        fromRoot('src/core_plugins'),
-        fromRoot('src/server'),
-        fromRoot('src/ui'),
-        fromRoot('src/utils'),
-        fromRoot('config'),
-        ...extraPaths
-      ]
-      .map(path => resolve(path))
-    );
-
-    this.watcher = chokidar.watch(watchPaths, {
+    const watchPaths = [
+      fromRoot('src/core_plugins'),
+      fromRoot('src/server'),
+      fromRoot('src/ui'),
+      fromRoot('src/utils'),
+      fromRoot('config'),
+      ...extraPaths
+    ].map(path => resolve(path));
+
+    this.watcher = chokidar.watch(uniq(watchPaths), {
       cwd: fromRoot('.'),
       ignored: /[\\\/](\..*|node_modules|bower_components|public|__tests__)[\\\/]/
     });

src/core_plugins/console/.eslintrc

@@ -1,34 +1,36 @@
 ---
 
 root: true
-extends: '@elastic/kibana'
+extends: '../../../.eslintrc'
 
 rules:
-  block-scoped-var: [0]
-  camelcase: [0]
-  curly: [0]
-  dot-location: [0]
-  dot-notation: [0]
-  eqeqeq: [0]
-  guard-for-in: [0]
-  indent: [0]
-  max-len: [0]
-  new-cap: [0]
-  no-caller: [0]
-  no-empty: [0]
-  no-extend-native: [0]
-  no-loop-func: [0]
-  no-multi-str: [0]
-  no-nested-ternary: [0]
-  no-proto: [0]
-  no-sequences: [0]
-  no-undef: [0]
-  no-use-before-define: [0]
-  one-var: [0]
-  quotes: [0]
-  space-before-blocks: [0]
-  space-in-parens: [0]
-  space-infix-ops: [0]
-  semi: [0]
-  strict: [0]
-  wrap-iife: [0]
+  block-scoped-var: off
+  camelcase: off
+  curly: off
+  dot-location: off
+  dot-notation: off
+  eqeqeq: off
+  guard-for-in: off
+  indent: off
+  max-len: off
+  new-cap: off
+  no-caller: off
+  no-empty: off
+  no-extend-native: off
+  no-loop-func: off
+  no-multi-str: off
+  no-nested-ternary: off
+  no-proto: off
+  no-sequences: off
+  no-undef: off
+  no-use-before-define: off
+  one-var: off
+  quotes: off
+  space-before-blocks: off
+  space-in-parens: off
+  space-infix-ops: off
+  semi: off
+  strict: off
+  wrap-iife: off
+  no-var: off
+  prefer-const: off

src/core_plugins/timelion/.eslintrc

@@ -10,4 +10,4 @@ export default {
   },
   on: _.noop,
   off: _.noop
-}
+};

src/fixtures/mock_ui_state.js

@@ -1,15 +1,15 @@
-const rimraf = promisify(require('rimraf'));
-const mkdirp = promisify(require('mkdirp'));
-const unlink = promisify(require('fs').unlink);
-const readdir = promisify(require('fs').readdir);
-
 import UiBundle from './ui_bundle';
 import appEntryTemplate from './app_entry_template';
 import { readFileSync as readSync } from 'fs';
 import { pull, transform, pluck } from 'lodash';
 import { promisify } from 'bluebird';
 import { makeRe } from 'minimatch';
 
+const rimraf = promisify(require('rimraf'));
+const mkdirp = promisify(require('mkdirp'));
+const unlink = promisify(require('fs').unlink);
+const readdir = promisify(require('fs').readdir);
+
 class UiBundleCollection {
   constructor(bundlerEnv, filter) {
     this.each = [];

src/ui/ui_bundle_collection.js

@@ -1,30 +1,33 @@
-var resolve = require('path').resolve;
+import { resolve } from 'path';
+export default grunt => ({
+  options: {
+    paths: [
+      'Gruntfile.js',
+      'bin',
+      'config',
+      'src',
+      'tasks',
+      'test',
+      'utilities',
+    ],
+  },
 
-module.exports = function (grunt) {
-  return {
-    // just lint the source dir
-    source: {
-      options: {
-        cache: resolve(grunt.config.get('root'), '.eslint.fixSource.cache')
-      },
+  source: {
+    options: {
+      cache: resolve(grunt.config.get('root'), '.eslint.fixSource.cache')
+    }
+  },
 
-      files: {
-        src: '<%= lintThese %>'
-      }
-    },
+  fixSource: {
+    options: {
+      cache: resolve(grunt.config.get('root'), '.eslint.fixSource.cache'),
+      fix: true
+    }
+  },
 
-    // lint the source and fix any fixable errors
-    fixSource: {
-      options: {
-        cache: resolve(grunt.config.get('root'), '.eslint.fixSource.cache'),
-        fix: true
-      },
-
-      files: {
-        src: '<%= lintThese %>'
-      }
-    },
-
-    staged: {}
-  };
-};
+  staged: {
+    options: {
+      paths: null // overridden by lintStagedFiles task
+    }
+  }
+});

tasks/config/eslint.js

@@ -0,0 +1,44 @@
+import { CLIEngine } from 'eslint';
+
+const OPTION_DEFAULTS = {
+  paths: null,
+  cache: null,
+  fix: false
+};
+
+export default grunt => {
+  grunt.registerMultiTask('eslint', function () {
+    const options = this.options(OPTION_DEFAULTS);
+
+    if (!options.paths) {
+      grunt.fatal(new Error('No eslint.options.paths specified'));
+      return;
+    }
+
+    const cli = new CLIEngine({
+      cache: options.cache,
+      fix: options.fix,
+      cwd: grunt.config.get('root'),
+    });
+
+    // report includes an entire list of files checked and the
+    // fixes, errors, and warning for each.
+    const report = cli.executeOnFiles(options.paths);
+
+    // output fixes to disk
+    if (options.fix) {
+      CLIEngine.outputFixes(report);
+    }
+
+    // log the formatted linting report
+    const formatter = cli.getFormatter();
+
+    const errTypes = [];
+    if (report.errorCount > 0) errTypes.push('errors');
+    if (report.warningCount > 0) errTypes.push('warning');
+    if (!errTypes.length) return;
+
+    grunt.log.write(formatter(report.results));
+    grunt.fatal(`eslint ${errTypes.join(' & ')}`);
+  });
+};