Moved grunt-eslint to npm script executing eslint (#10474)

refs #9441

* Updated top-level ids to use const
* Removed one layer of indentation
* Added .eslintignore files for server and test tasks
* Added npm scripts for eslint
* Fixed lint command in w/ grunt
* Uninstalled grunt-eslint
* Added eslint config

.eslintignore

@@ -0,0 +1,2 @@
+core/server/public/**/*.js
+core/server/lib/members/static/auth/**/*.js

Gruntfile.js

@@ -8,34 +8,32 @@
 
 require('./core/server/overrides');
 
-var config = require('./core/server/config'),
-    urlService = require('./core/server/services/url'),
-    _ = require('lodash'),
-    chalk = require('chalk'),
-    fs = require('fs-extra'),
-    KnexMigrator = require('knex-migrator'),
-    knexMigrator = new KnexMigrator({
+const config = require('./core/server/config');
+const urlService = require('./core/server/services/url');
+const _ = require('lodash');
+const chalk = require('chalk');
+const fs = require('fs-extra');
+const KnexMigrator = require('knex-migrator');
+const knexMigrator = new KnexMigrator({
     knexMigratorFilePath: config.get('paths:appRoot')
-    }),
+});
 
-    path = require('path'),
+const path = require('path');
+const escapeChar = process.platform.match(/^win/) ? '^' : '\\';
+const cwd = process.cwd().replace(/( |\(|\))/g, escapeChar + '$1');
+const buildDirectory = path.resolve(cwd, '.build');
+const distDirectory = path.resolve(cwd, '.dist');
 
-    escapeChar = process.platform.match(/^win/) ? '^' : '\\',
-    cwd = process.cwd().replace(/( |\(|\))/g, escapeChar + '$1'),
-    buildDirectory = path.resolve(cwd, '.build'),
-    distDirectory = path.resolve(cwd, '.dist'),
-
-    hasBuiltClient = false,
-    logBuildingClient = function (grunt) {
+let hasBuiltClient = false;
+const logBuildingClient = function (grunt) {
     if (!hasBuiltClient) {
         grunt.log.writeln('Building admin client... (can take ~1min)');
         setTimeout(logBuildingClient, 5000, grunt);
     }
-    },
+};
 
 // ## Grunt configuration
-
-    configureGrunt = function (grunt) {
+const configureGrunt = function (grunt) {
     // #### Load all grunt tasks
     //
     // Find all of the task which start with `grunt-` and load them, rather than explicitly declaring them all
@@ -109,35 +107,6 @@ var config = require('./core/server/config'),
             }
         },
 
-            // ### grunt-eslint
-            // Linting rules, run as part of `grunt validate`. See [grunt validate](#validate) and its subtasks for
-            // more information.
-            eslint: {
-                server: {
-                    options: {
-                        config: '.eslintrc.json'
-                    },
-                    src: [
-                        '*.js',
-                        'core/*.js',
-                        'core/server/*.js',
-                        'core/server/**/*.js',
-                        '!core/server/public/**/*.js',
-                        '!core/server/lib/members/static/auth/**/*.js'
-                    ]
-                },
-                test: {
-                    options: {
-                        config: './core/test/.eslintrc.json'
-                    },
-                    src: [
-                        'core/test/*.js',
-                        'core/test/**/*.js',
-                        '!core/test/coverage/**'
-                    ]
-                }
-            },
-
         // ### grunt-mocha-cli
         mochacli: {
             options: {
@@ -238,6 +207,9 @@ var config = require('./core/server/config'),
         // ### grunt-shell
         // Command line tools where it's easier to run a command directly than configure a grunt plugin
         shell: {
+            lint: {
+                command: 'yarn lint'
+            },
             master: {
                 command: function () {
                     var upstream = grunt.option('upstream') || process.env.GHOST_UPSTREAM || 'upstream';
@@ -498,7 +470,7 @@ var config = require('./core/server/config'),
     //
     // `grunt lint` will run the linter
     grunt.registerTask('lint', 'Run the code style checks for server & tests',
-            ['eslint']
+        ['shell:lint']
     );
 
     // ### test-setup *(utility)(

core/test/.eslintignore

@@ -0,0 +1 @@
+core/test/coverage/**

package.json

@@ -26,7 +26,9 @@
     "test": "grunt validate --verbose",
     "test:regression": "grunt test-regression --verbose",
     "setup": "yarn install && knex-migrator init && grunt symlink && grunt init || true",
-    "lint": "grunt lint",
+    "lint:server": "eslint --ignore-path .eslintignore 'core/server/**/*.js' 'core/*.js' '*.js'",
+    "lint:test": "eslint -c core/test/.eslintrc.json --ignore-path core/test/.eslintignore 'core/test/**/*.js'",
+    "lint": "yarn lint:server && yarn lint:test",
     "fixmodulenotdefined": "yarn cache clean && cd core/client && rm -rf node_modules tmp dist && yarn && cd ../../"
   },
   "engines": {
@@ -127,7 +129,6 @@
     "grunt-contrib-uglify": "4.0.0",
     "grunt-contrib-watch": "1.1.0",
     "grunt-cssnano": "2.1.0",
-    "grunt-eslint": "21.0.0",
     "grunt-express-server": "0.5.4",
     "grunt-mocha-cli": "4.0.0",
     "grunt-mocha-istanbul": "5.0.2",

yarn.lock

@@ -1625,7 +1625,7 @@ eslint-visitor-keys@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
 
-eslint@5.12.1, eslint@^5.0.0:
+eslint@5.12.1:
   version "5.12.1"
   resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.12.1.tgz#5ca9931fb9029d04e7be92b03ce3b58edfac7e3b"
   dependencies:
@@ -2565,13 +2565,6 @@ grunt-cssnano@2.1.0:
   dependencies:
     cssnano "^3.0.0"
 
-grunt-eslint@21.0.0:
-  version "21.0.0"
-  resolved "https://registry.yarnpkg.com/grunt-eslint/-/grunt-eslint-21.0.0.tgz#5863f593d328c27ffec2a183319e5ad5380eed9e"
-  dependencies:
-    chalk "^2.1.0"
-    eslint "^5.0.0"
-
 grunt-express-server@0.5.4:
   version "0.5.4"
   resolved "https://registry.yarnpkg.com/grunt-express-server/-/grunt-express-server-0.5.4.tgz#8ce79c335c6cbb9ef50ee1dfaa61942028f43aeb"