lint(*): correct eslint errors, warnings still exist

There are warnings in `spellcheck-composer-extension.es6` for the `while (true)`
loops.

internal_packages/composer-spellcheck/lib/spellcheck-composer-extension.es6

@@ -182,11 +182,12 @@ export default class SpellcheckComposerExtension extends ComposerExtension {
   static finalizeSessionBeforeSending = ({session}) => {
     const body = session.draft().body;
     const clean = body.replace(/<\/?spelling[^>]*>/g, '');
+
     if (body !== clean) {
       return session.changes.add({body: clean});
-    } else {
-      return Promise.resolve();
     }
+
+    return Promise.resolve();
   }
 }
 

internal_packages/message-autoload-images/spec/autoload-images-extension-spec.es6

@@ -1,4 +1,5 @@
 import fs from 'fs';
+import path from 'path';
 import AutoloadImagesExtension from '../lib/autoload-images-extension';
 import AutoloadImagesStore from '../lib/autoload-images-store';
 
@@ -10,6 +11,7 @@ describe("AutoloadImagesExtension", ()=> {
     fs.readdirSync(fixtures).forEach((filename) => {
       if (filename.endsWith('-in.html')) {
         const name = filename.replace('-in.html', '');
+
         scenarios.push({
           name: name,
           in: fs.readFileSync(path.join(fixtures, filename)).toString(),
@@ -21,11 +23,13 @@ describe("AutoloadImagesExtension", ()=> {
     scenarios.forEach((scenario)=> {
       it(`should process ${scenario.name}`, () => {
         spyOn(AutoloadImagesStore, 'shouldBlockImagesIn').andReturn(true);
-        message = {
-          body: scenario.in
+
+        const message = {
+          body: scenario.in,
         };
         AutoloadImagesExtension.formatMessageBody({message});
-        expect(message.body == scenario.out).toBe(true);
+
+        expect(message.body === scenario.out).toBe(true);
       });
     });
   });