diff --git a/services/web/app/src/Features/UserMembership/UserMembershipViewModel.js b/services/web/app/src/Features/UserMembership/UserMembershipViewModel.js
index 1d83a258ef..0b8bf511ea 100644
--- a/services/web/app/src/Features/UserMembership/UserMembershipViewModel.js
+++ b/services/web/app/src/Features/UserMembership/UserMembershipViewModel.js
@@ -1,88 +1,60 @@
-/* eslint-disable
-    n/handle-callback-err,
-    max-len,
-*/
-// TODO: This file was created by bulk-decaffeinate.
-// Fix any style issues and re-enable lint.
-/*
- * decaffeinate suggestions:
- * DS102: Remove unnecessary code created because of implicit returns
- * DS207: Consider shorter variations of null checks
- * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
- */
 const UserGetter = require('../User/UserGetter')
 const { isObjectIdInstance } = require('../Helpers/Mongo')
-const { promisify } = require('@overleaf/promise-utils')
 
 const UserMembershipViewModel = {
   build(userOrEmail) {
     if (userOrEmail._id) {
-      return buildUserViewModel(userOrEmail)
+      return buildUserViewModel(userOrEmail, false)
     } else {
       return buildUserViewModelWithEmail(userOrEmail)
     }
   },
 
-  buildAsync(userOrIdOrEmailArray, callback) {
-    if (callback == null) {
-      callback = function () {}
-    }
-
+  async buildAsync(userOrIdOrEmailArray) {
     const userObjectIds = userOrIdOrEmailArray.filter(isObjectIdInstance)
-
-    return UserGetter.getUsers(
-      userObjectIds,
-      {
+    const results = []
+    try {
+      const users = await UserGetter.promises.getUsers(userObjectIds, {
         email: 1,
         first_name: 1,
         last_name: 1,
         lastLoggedIn: 1,
         lastActive: 1,
         enrollment: 1,
-      },
-      function (error, users) {
-        const results = []
-
-        if (error != null) {
-          userOrIdOrEmailArray.forEach(item => {
-            if (isObjectIdInstance(item)) {
-              results.push(buildUserViewModelWithId(item.toString()))
-            } else {
-              // `item` is a user or an email and can be parsed by #build
-              results.push(UserMembershipViewModel.build(item))
-            }
-          })
-        } else {
-          const usersMap = new Map()
-          for (const user of users) {
-            usersMap.set(user._id.toString(), user)
-          }
-
-          userOrIdOrEmailArray.forEach(item => {
-            if (isObjectIdInstance(item)) {
-              const user = usersMap.get(item.toString())
-              if (user == null) {
-                results.push(buildUserViewModelWithId(item.toString()))
-              } else {
-                results.push(buildUserViewModel(user))
-              }
-            } else {
-              // `item` is a user or an email and can be parsed by #build
-              results.push(UserMembershipViewModel.build(item))
-            }
-          })
-        }
-
-        callback(null, results)
+      })
+      const usersMap = new Map()
+      for (const user of users) {
+        usersMap.set(user._id.toString(), user)
       }
-    )
+
+      userOrIdOrEmailArray.forEach(item => {
+        if (isObjectIdInstance(item)) {
+          const user = usersMap.get(item.toString())
+          if (!user) {
+            results.push(buildUserViewModelWithId(item.toString()))
+          } else {
+            results.push(buildUserViewModel(user, false))
+          }
+        } else {
+          // `item` is a user or an email and can be parsed by #build
+          results.push(UserMembershipViewModel.build(item))
+        }
+      })
+    } catch (error) {
+      userOrIdOrEmailArray.forEach(item => {
+        if (isObjectIdInstance(item)) {
+          results.push(buildUserViewModelWithId(item.toString()))
+        } else {
+          // `item` is a user or an email and can be parsed by #build
+          results.push(UserMembershipViewModel.build(item))
+        }
+      })
+    }
+    return results
   },
 }
 
 function buildUserViewModel(user, isInvite) {
-  if (isInvite == null) {
-    isInvite = false
-  }
   return {
     _id: user._id || null,
     email: user.email || null,
@@ -106,7 +78,7 @@ const buildUserViewModelWithEmail = email => buildUserViewModel({ email }, true)
 const buildUserViewModelWithId = id => buildUserViewModel({ _id: id }, false)
 
 UserMembershipViewModel.promises = {
-  buildAsync: promisify(UserMembershipViewModel.buildAsync),
+  buildAsync: UserMembershipViewModel.buildAsync,
 }
 
 module.exports = UserMembershipViewModel
diff --git a/services/web/test/unit/src/UserMembership/UserMembershipViewModelTests.js b/services/web/test/unit/src/UserMembership/UserMembershipViewModelTests.js
index c5e21a5f48..afdccef68c 100644
--- a/services/web/test/unit/src/UserMembership/UserMembershipViewModelTests.js
+++ b/services/web/test/unit/src/UserMembership/UserMembershipViewModelTests.js
@@ -1,15 +1,3 @@
-/* eslint-disable
-    n/handle-callback-err,
-    max-len,
-    no-return-assign,
-*/
-// TODO: This file was created by bulk-decaffeinate.
-// Fix any style issues and re-enable lint.
-/*
- * decaffeinate suggestions:
- * DS102: Remove unnecessary code created because of implicit returns
- * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
- */
 const { expect } = require('chai')
 const sinon = require('sinon')
 const assertCalledWith = sinon.assert.calledWith
@@ -25,7 +13,7 @@ const {
 
 describe('UserMembershipViewModel', function () {
   beforeEach(function () {
-    this.UserGetter = { getUsers: sinon.stub() }
+    this.UserGetter = { promises: { getUsers: sinon.stub() } }
     this.UserMembershipViewModel = SandboxedModule.require(modulePath, {
       requires: {
         'mongodb-legacy': { ObjectId },
@@ -54,7 +42,7 @@ describe('UserMembershipViewModel', function () {
   describe('build', function () {
     it('build email', function () {
       const viewModel = this.UserMembershipViewModel.build(this.email)
-      return expect(viewModel).to.deep.equal({
+      expect(viewModel).to.deep.equal({
         email: this.email,
         invite: true,
         last_active_at: null,
@@ -83,67 +71,49 @@ describe('UserMembershipViewModel', function () {
 
   describe('build async', function () {
     beforeEach(function () {
-      return (this.UserMembershipViewModel.build = sinon.stub())
+      this.UserMembershipViewModel.build = sinon.stub()
     })
 
-    it('build email', function (done) {
-      this.UserGetter.getUsers.yields(null, [])
-      return this.UserMembershipViewModel.buildAsync(
-        [this.email],
-        (error, [viewModel]) => {
-          assertCalledWith(this.UserMembershipViewModel.build, this.email)
-          return done()
-        }
-      )
+    it('build email', async function () {
+      this.UserGetter.promises.getUsers.resolves([])
+      await this.UserMembershipViewModel.buildAsync([this.email])
+      assertCalledWith(this.UserMembershipViewModel.build, this.email)
     })
 
-    it('build user', function (done) {
-      this.UserGetter.getUsers.yields(null, [])
-      return this.UserMembershipViewModel.buildAsync(
-        [this.user],
-        (error, [viewModel]) => {
-          assertCalledWith(this.UserMembershipViewModel.build, this.user)
-          return done()
-        }
-      )
+    it('build user', async function () {
+      this.UserGetter.promises.getUsers.resolves([])
+      await this.UserMembershipViewModel.buildAsync([this.user])
+      assertCalledWith(this.UserMembershipViewModel.build, this.user)
     })
 
-    it('build user id', function (done) {
+    it('build user id', async function () {
       const user = {
         ...this.user,
         _id: new ObjectId(),
       }
-      this.UserGetter.getUsers.yields(null, [user])
-      return this.UserMembershipViewModel.buildAsync(
-        [user._id],
-        (error, [viewModel]) => {
-          expect(error).not.to.exist
-          assertNotCalled(this.UserMembershipViewModel.build)
-          expect(viewModel._id.toString()).to.equal(user._id.toString())
-          expect(viewModel.email).to.equal(user.email)
-          expect(viewModel.first_name).to.equal(user.first_name)
-          expect(viewModel.invite).to.equal(false)
-          expect(viewModel.email).to.exist
-          expect(viewModel.enrollment).to.exist
-          expect(viewModel.enrollment).to.deep.equal(user.enrollment)
-          return done()
-        }
-      )
+      this.UserGetter.promises.getUsers.resolves([user])
+      const [viewModel] = await this.UserMembershipViewModel.buildAsync([
+        user._id,
+      ])
+      assertNotCalled(this.UserMembershipViewModel.build)
+      expect(viewModel._id.toString()).to.equal(user._id.toString())
+      expect(viewModel.email).to.equal(user.email)
+      expect(viewModel.first_name).to.equal(user.first_name)
+      expect(viewModel.invite).to.equal(false)
+      expect(viewModel.email).to.exist
+      expect(viewModel.enrollment).to.exist
+      expect(viewModel.enrollment).to.deep.equal(user.enrollment)
     })
 
-    it('build user id with error', function (done) {
-      this.UserGetter.getUsers.yields(new Error('nope'), [])
+    it('build user id with error', async function () {
+      this.UserGetter.promises.getUsers.rejects(new Error('nope'))
       const userId = new ObjectId()
-      return this.UserMembershipViewModel.buildAsync(
-        [userId],
-        (error, [viewModel]) => {
-          expect(error).not.to.exist
-          assertNotCalled(this.UserMembershipViewModel.build)
-          expect(viewModel._id).to.equal(userId.toString())
-          expect(viewModel.email).not.to.exist
-          return done()
-        }
-      )
+      const [viewModel] = await this.UserMembershipViewModel.buildAsync([
+        userId,
+      ])
+      assertNotCalled(this.UserMembershipViewModel.build)
+      expect(viewModel._id).to.equal(userId.toString())
+      expect(viewModel.email).not.to.exist
     })
   })
 })