[isomorphic-core] Allow use of atob() in cloud environments

Summary: atob() is a global in browser environments, but needs to be imported otherwise.

Test Plan: manual

Reviewers: juan

Reviewed By: juan

Differential Revision: https://phab.nylas.com/D3950

packages/isomorphic-core/package.json

@@ -4,6 +4,7 @@
   "description": "Packages use isomorphically on n1-cloud and client-sync",
   "main": "index.js",
   "dependencies": {
+    "atob": "2.0.3",
     "imap": "github:jstejada/node-imap#fix-parse-body-list",
     "imap-provider-settings": "github:nylas/imap-provider-settings",
     "joi": "8.4.2",

packages/isomorphic-core/src/models/account.js

@@ -1,3 +1,4 @@
+const atob = require('atob')
 const crypto = require('crypto');
 const {JSONColumn, JSONArrayColumn} = require('../database-types');
 const {SUPPORTED_PROVIDERS} = require('../auth-helpers');