Backport to CE for:

https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/2483

app/assets/javascripts/boards/components/modal/index.js

 /* global ListIssue */
 import Vue from 'vue';
-import queryData from '../../utils/query_data';
-import loadingIcon from '../../../vue_shared/components/loading_icon.vue';
+import queryData from '~/boards/utils/query_data';
+import loadingIcon from '~/vue_shared/components/loading_icon.vue';
 import './header';
 import './list';
 import './footer';

app/assets/javascripts/pipelines/components/graph/graph_component.vue

 <script>
+  import loadingIcon from '~/vue_shared/components/loading_icon.vue';
+  import '~/flash';
   import stageColumnComponent from './stage_column_component.vue';
-  import loadingIcon from '../../../vue_shared/components/loading_icon.vue';
-  import '../../../flash';
   export default {
     props: {

app/assets/javascripts/vue_merge_request_widget/dependencies.js

 /**
  * This file is the centerpiece of an attempt to reduce potential conflicts
  * between the CE and EE versions of the MR widget. EE additions to the MR widget should
- * be contained in the ./vue_merge_request_widget/ee directory, and should **extend**
+ * be contained in the ee/vue_merge_request_widget directory, and should **extend**
  * rather than mutate CE MR Widget code.
  *
  * This file should be the only source of conflicts between EE and CE. EE-only components should

config/application.rb

@@ -23,13 +23,13 @@ module Gitlab
     # https://github.com/rails/rails/blob/v4.2.6/railties/lib/rails/engine.rb#L687
     # This is a nice reference article on autoloading/eager loading:
     # http://blog.arkency.com/2014/11/dont-forget-about-eager-load-when-extending-autoload
-    config.eager_load_paths.push(*%W(#{config.root}/lib
+    config.eager_load_paths.push(*%W[#{config.root}/lib
                                      #{config.root}/app/models/hooks
                                      #{config.root}/app/models/members
                                      #{config.root}/app/models/project_services
                                      #{config.root}/app/workers/concerns
                                      #{config.root}/app/services/concerns
-                                     #{config.root}/app/finders/concerns))
+                                     #{config.root}/app/finders/concerns])
     config.generators.templates.push("#{config.root}/generator_templates")

doc/development/fe_guide/style_guide_js.md

@@ -11,7 +11,7 @@ See [our current .eslintrc][eslintrc] for specific rules and patterns.
 #### ESlint
-1. **Never** disable eslint rules unless you have a good reason.  
+1. **Never** disable eslint rules unless you have a good reason.
 You may see a lot of legacy files with `/* eslint-disable some-rule, some-other-rule */`
 at the top, but legacy files are a special case.  Any time you develop a new feature or
 refactor an existing one, you should abide by the eslint rules.
@@ -100,26 +100,44 @@ followed by any global declarations, then a blank newline prior to any imports o
     export default Foo;
   ```
-1. Relative paths: Unless you are writing a test, always reference other scripts using
-relative paths instead of `~`
-  * In **app/assets/javascripts**:
-    ```javascript
-      // bad
-      import Foo from '~/foo'
-      // good
-      import Foo from '../foo';
-    ```
-  * In **spec/javascripts**:
-    ```javascript
-      // bad
-      import Foo from '../../app/assets/javascripts/foo'
-      // good
-      import Foo from '~/foo';
-    ```
+1. Relative paths: when importing a module in the same directory, a child
+directory, or an immediate parent directory prefer relative paths.  When
+importing a module which is two or more levels up, prefer either `~/` or `ee/`
+.
+In **app/assets/javascripts/my-feature/subdir**:
+``` javascript
+// bad
+import Foo from '~/my-feature/foo';
+import Bar from '~/my-feature/subdir/bar';
+import Bin from '~/my-feature/subdir/lib/bin';
+// good
+import Foo from '../foo';
+import Bar from './bar';
+import Bin from './lib/bin';
+```
+In **spec/javascripts**:
+
+``` javascript
+// bad
+import Foo from '../../app/assets/javascripts/my-feature/foo';
+
+// good
+import Foo from '~/my-feature/foo';
+```
+
+When referencing an **EE component**:
+
+``` javascript
+// bad
+import Foo from '../../../../../ee/app/assets/javascripts/my-feature/ee-foo';
+
+// good
+import Foo from 'ee/my-feature/foo';
+```
 1. Avoid using IIFE. Although we have a lot of examples of files which wrap their
 contents in IIFEs (immediately-invoked function expressions),
@@ -465,7 +483,7 @@ A forEach will cause side effects, it will be mutating the array being iterated.
 #### Vue and Boostrap
 1. Tooltips: Do not rely on `has-tooltip` class name for Vue components
-  ```javascript
+  ```javascript
     // bad
     <span
       class="has-tooltip"

spec/support/api/schema_matcher.rb

-def schema_path(schema)
-  schema_directory = "#{Dir.pwd}/spec/fixtures/api/schemas"
-  "#{schema_directory}/#{schema}.json"
+module SchemaPath
+  def self.expand(schema, dir = '')
+    Rails.root.join('spec', dir, "fixtures/api/schemas/#{schema}.json").to_s
+  end
 end
-RSpec::Matchers.define :match_response_schema do |schema, **options|
+RSpec::Matchers.define :match_response_schema do |schema, dir: '', **options|
   match do |response|
-    @errors = JSON::Validator.fully_validate(schema_path(schema), response.body, options)
+    @errors = JSON::Validator.fully_validate(
+      SchemaPath.expand(schema, dir), response.body, options)
     @errors.empty?
   end
   failure_message do |response|
-    "didn't match the schema defined by #{schema_path(schema)}" \
+    "didn't match the schema defined by #{SchemaPath.expand(schema, dir)}" \
     " The validation errors were:\n#{@errors.join("\n")}"
   end
 end
-RSpec::Matchers.define :match_schema do |schema, **options|
+RSpec::Matchers.define :match_schema do |schema, dir: '', **options|
   match do |data|
-    JSON::Validator.validate!(schema_path(schema), data, options)
+    JSON::Validator.validate!(SchemaPath.expand(schema, dir), data, options)
   end
 end