Replace uses of deprecated Buffer()

final/server/src/__tests__/resolvers.mutation.js

@@ -97,7 +97,7 @@ describe('[Mutation.login]', () => {
 
   it('returns base64 encoded email as user token if successful', async () => {
     const args = { email: '[email protected]' };
-    const base64Email = new Buffer(mockContext.user.email).toString('base64');
+    const base64Email = Buffer.from(mockContext.user.email).toString('base64');
     findOrCreateUser.mockReturnValueOnce({ token: base64Email });
 
     // check the resolver response

final/server/src/index.js

@@ -25,7 +25,7 @@ const dataSources = () => ({
 const context = async ({ req }) => {
   // simple auth check on every request
   const auth = (req.headers && req.headers.authorization) || '';
-  const email = new Buffer(auth, 'base64').toString('ascii');
+  const email = Buffer.from(auth, 'base64').toString('ascii');
 
   // if the email isn't formatted validly, return null for user
   if (!isEmail.validate(email)) return { user: null };

final/server/src/resolvers.js

@@ -66,7 +66,7 @@ module.exports = {
     login: async (_, { email }, { dataSources }) => {
       const user = await dataSources.userAPI.findOrCreateUser({ email });
       if (user) {
-        user.token = new Buffer(email).toString('base64');
+        user.token = Buffer.from(email).toString('base64');
         return user;
       }
     },

start/server/src/__tests__/resolvers.mutation.js

@@ -98,7 +98,7 @@ describe('[Mutation.login]', () => {
   it('returns base64 encoded email if successful', async () => {
     const args = { email: '[email protected]' };
     findOrCreateUser.mockReturnValueOnce(true);
-    const base64Email = new Buffer(mockContext.user.email).toString('base64');
+    const base64Email = Buffer.from(mockContext.user.email).toString('base64');
 
     // check the resolver response
     const res = await resolvers.Mutation.login(null, args, mockContext);