SectionList on home screen with API

server/src/database/DB.js

@@ -11,31 +11,24 @@ Grid.mongo = mongoose.mongo
 @autobind
 export class DB {
   constructor() {
-    mongoose.Promise = Promise
     mongoose.plugin(merge)
   }
 
-  connect(mongoUri, isProduction) {
-    return mongoose
-      .connect(mongoUri, {
-        useMongoClient: true,
-        config: { autoIndex: !isProduction },
-      })
-      .then((connection) => {
-        this.connection = connection
+  async connect(mongoUri, isProduction) {
+    const connection = await mongoose.createConnection(mongoUri, {
+      promiseLibrary: Promise,
+      autoIndex: !isProduction,
+    })
 
-        this.gridfs = Grid(connection.db)
-        this.gridfs.findOneAsync = util.promisify(this.gridfs.findOne)
-        this.gridfs.removeAsync = util.promisify(this.gridfs.remove)
+    this.gridfs = Grid(connection.db)
+    this.gridfs.findOneAsync = util.promisify(this.gridfs.findOne)
+    this.gridfs.removeAsync = util.promisify(this.gridfs.remove)
 
-        this.User = connection.model("User", Schemas.userSchema)
-        this.WorkItem = connection.model("WorkItem", Schemas.workItemSchema)
-        this.Activity = connection.model("Activity", Schemas.activitySchema)
-        this.Team = connection.model("Team", Schemas.teamSchema)
-        this.Counter = connection.model("Counter", Schemas.counterSchema)
-
-        return Promise.resolve(this)
-      })
+    this.User = connection.model("User", Schemas.userSchema)
+    this.WorkItem = connection.model("WorkItem", Schemas.workItemSchema)
+    this.Activity = connection.model("Activity", Schemas.activitySchema)
+    this.Team = connection.model("Team", Schemas.teamSchema)
+    this.Counter = connection.model("Counter", Schemas.counterSchema)
   }
 
   newObjectId(s) {
@@ -43,17 +36,16 @@ export class DB {
     return new mongodb.ObjectID(s).toString()
   }
 
-  lookupToken(token, done) {
-    this.User.findOne({ loginToken: token })
-      .then((user) => {
-        if (!user) {
-          done(null, false)
-        } else {
-          done(null, user)
-        }
-      })
-      .catch((err) => {
-        done(err)
-      })
+  async lookupToken(token, done) {
+    try {
+      const user = await this.User.findOne({ loginToken: token })
+      if (!user) {
+        done(null, false)
+      } else {
+        done(null, user)
+      }
+    } catch (err) {
+      done(err)
+    }
   }
 }