Use Prettier JS (#5017)

* Adds prettier

* Run lint before tests

spec/InMemoryCache.spec.js

@@ -1,26 +1,24 @@
 const InMemoryCache = require('../lib/Adapters/Cache/InMemoryCache').default;
 
-
 describe('InMemoryCache', function() {
   const BASE_TTL = {
-    ttl: 100
+    ttl: 100,
   };
   const NO_EXPIRE_TTL = {
-    ttl: NaN
+    ttl: NaN,
   };
   const KEY = 'hello';
   const KEY_2 = KEY + '_2';
 
   const VALUE = 'world';
 
-
   function wait(sleep) {
     return new Promise(function(resolve) {
       setTimeout(resolve, sleep);
-    })
+    });
   }
 
-  it('should destroy a expire items in the cache', (done) => {
+  it('should destroy a expire items in the cache', done => {
     const cache = new InMemoryCache(BASE_TTL);
 
     cache.put(KEY, VALUE);
@@ -29,13 +27,13 @@ describe('InMemoryCache', function() {
     expect(value).toEqual(VALUE);
 
     wait(BASE_TTL.ttl * 10).then(() => {
-      value = cache.get(KEY)
+      value = cache.get(KEY);
       expect(value).toEqual(null);
       done();
     });
   });
 
-  it('should delete items', (done) => {
+  it('should delete items', done => {
     const cache = new InMemoryCache(NO_EXPIRE_TTL);
     cache.put(KEY, VALUE);
     cache.put(KEY_2, VALUE);
@@ -52,7 +50,7 @@ describe('InMemoryCache', function() {
     done();
   });
 
-  it('should clear all items', (done) => {
+  it('should clear all items', done => {
     const cache = new InMemoryCache(NO_EXPIRE_TTL);
     cache.put(KEY, VALUE);
     cache.put(KEY_2, VALUE);
@@ -70,5 +68,4 @@ describe('InMemoryCache', function() {
     const cache = new InMemoryCache({});
     expect(cache.ttl).toEqual(5 * 1000);
   });
-
 });