diff --git a/common/script/libs/preenTodos.js b/common/script/libs/preenTodos.js
index f07a49c9d0..121bdae008 100644
--- a/common/script/libs/preenTodos.js
+++ b/common/script/libs/preenTodos.js
@@ -1,14 +1,12 @@
 import moment from 'moment';
 import _ from 'lodash';
 
-/*
-  Preen 3-day past-completed To-Dos from Angular & mobile app
- */
+// TODO used only in v2 client
 
-module.exports = function(tasks) {
-  return _.filter(tasks, function(t) {
-    return !t.completed || (t.challenge && t.challenge.id) || moment(t.dateCompleted).isAfter(moment().subtract({
-      days: 3
+module.exports = function preenTodos (tasks) {
+  return _.filter(tasks, (t) => {
+    return !t.completed || t.challenge && t.challenge.id || moment(t.dateCompleted).isAfter(moment().subtract({
+      days: 3,
     }));
   });
 };
diff --git a/common/script/ops/addTag.js b/common/script/ops/addTag.js
index 2b97e67f38..b44ead8d2e 100644
--- a/common/script/ops/addTag.js
+++ b/common/script/ops/addTag.js
@@ -1,14 +1,17 @@
 import uuid from '../libs/uuid';
+import _ from 'lodash';
 
 // TODO used only in client, move there?
 
-module.exports = function(user, req, cb) {
-  if (user.tags == null) {
+module.exports = function addTag (user, req = {}) {
+  if (!user.tags) {
     user.tags = [];
   }
+
   user.tags.push({
     name: req.body.name,
-    id: req.body.id || uuid()
+    id: _.get(req, 'body.id') || uuid(),
   });
-  return typeof cb === "function" ? cb(null, user.tags) : void 0;
+
+  return user.tags;
 };
diff --git a/common/script/ops/deleteTag.js b/common/script/ops/deleteTag.js
index 275aa3e5bd..c40fe79ba5 100644
--- a/common/script/ops/deleteTag.js
+++ b/common/script/ops/deleteTag.js
@@ -1,28 +1,32 @@
 import i18n from '../i18n';
 import _ from 'lodash';
+import { NotFound } from '../libs/errors';
 
 // TODO used only in client, move there?
 
-module.exports = function(user, req, cb) {
-  var i, tag, tid;
-  tid = req.params.id;
-  i = _.findIndex(user.tags, {
-    id: tid
+module.exports = function deleteTag (user, req = {}) {
+  let tid = _.get(req, 'params.id');
+
+  let index = _.findIndex(user.tags, {
+    id: tid,
   });
-  if (!~i) {
-    return typeof cb === "function" ? cb({
-      code: 404,
-      message: i18n.t('messageTagNotFound', req.language)
-    }) : void 0;
+
+  if (index === -1) {
+    throw new NotFound(i18n.t('messageTagNotFound', req.language));
   }
-  tag = user.tags[i];
+
+  let tag = user.tags[index];
   delete user.filters[tag.id];
-  user.tags.splice(i, 1);
-  _.each(user.tasks, function(task) {
+
+  user.tags.splice(index, 1);
+
+  _.each(user.tasks, (task) => {
     return delete task.tags[tag.id];
   });
-  _.each(['habits', 'dailys', 'todos', 'rewards'], function(type) {
-    return typeof user.markModified === "function" ? user.markModified(type) : void 0;
+
+  _.each(['habits', 'dailys', 'todos', 'rewards'], (type) => {
+    user.markModified(type);
   });
-  return typeof cb === "function" ? cb(null, user.tags) : void 0;
+
+  return user.tags;
 };
diff --git a/common/script/ops/deleteTask.js b/common/script/ops/deleteTask.js
index a830e19257..b818cf7ed4 100644
--- a/common/script/ops/deleteTask.js
+++ b/common/script/ops/deleteTask.js
@@ -1,19 +1,21 @@
 import i18n from '../i18n';
+import { NotFound } from '../libs/errors';
+import _ from 'lodash';
 
 // TODO used only in client, move there?
 
-module.exports = function(user, req, cb) {
-  var i, ref, task;
-  task = user.tasks[(ref = req.params) != null ? ref.id : void 0];
+module.exports = function deleteTask (user, req = {}) {
+  let tid = _.get(req, 'params.id');
+  let task = user.tasks[tid];
+
   if (!task) {
-    return typeof cb === "function" ? cb({
-      code: 404,
-      message: i18n.t('messageTaskNotFound', req.language)
-    }) : void 0;
+    throw new NotFound(i18n.t('messageTaskNotFound', req.language));
   }
-  i = user[task.type + "s"].indexOf(task);
-  if (~i) {
-    user[task.type + "s"].splice(i, 1);
+
+  let index = user[`${task.type}s`].indexOf(task);
+  if (index !== -1) {
+    user[`${task.type}s`].splice(index, 1);
   }
-  return typeof cb === "function" ? cb(null, {}) : void 0;
+
+  return {};
 };
diff --git a/common/script/ops/getTag.js b/common/script/ops/getTag.js
index b54133c2c7..4a7db63128 100644
--- a/common/script/ops/getTag.js
+++ b/common/script/ops/getTag.js
@@ -1,19 +1,18 @@
 import _ from 'lodash';
 import i18n from '../i18n';
+import { NotFound } from '../libs/errors';
 
 // TODO used only in client, move there?
 
-module.exports = function(user, req, cb) {
-  var i, tid;
-  tid = req.params.id;
-  i = _.findIndex(user.tags, {
-    id: tid
+module.exports = function getTag (user, req = {}) {
+  let tid = _.get(req, 'params.id');
+
+  let index = _.findIndex(user.tags, {
+    id: tid,
   });
-  if (!~i) {
-    return typeof cb === "function" ? cb({
-      code: 404,
-      message: i18n.t('messageTagNotFound', req.language)
-    }) : void 0;
+  if (index === -1) {
+    throw new NotFound(i18n.t('messageTagNotFound', req.language));
   }
-  return typeof cb === "function" ? cb(null, user.tags[i]) : void 0;
+
+  return user.tags[index];
 };
diff --git a/common/script/ops/getTags.js b/common/script/ops/getTags.js
index b379f13578..a96589a831 100644
--- a/common/script/ops/getTags.js
+++ b/common/script/ops/getTags.js
@@ -1,5 +1,5 @@
 // TODO used only in client, move there?
 
-module.exports = function(user, req, cb) {
-  return typeof cb === "function" ? cb(null, user.tags) : void 0;
+module.exports = function getTags (user) {
+  return user.tags;
 };
diff --git a/common/script/ops/sortTag.js b/common/script/ops/sortTag.js
index d47083ad3f..29756a8b82 100644
--- a/common/script/ops/sortTag.js
+++ b/common/script/ops/sortTag.js
@@ -1,11 +1,16 @@
+import { BadRequest } from '../libs/errors';
+import _ from 'lodash';
+
 // TODO used only in client, move there?
 
-module.exports = function(user, req, cb) {
-  var from, ref, to;
-  ref = req.query, to = ref.to, from = ref.from;
-  if (!((to != null) && (from != null))) {
-    return typeof cb === "function" ? cb('?to=__&from=__ are required') : void 0;
+module.exports = function sortTag (user, req = {}) {
+  let to = _.get(req, 'query.to');
+  let fromParam = _.get(req, 'query.from');
+
+  if (!to || !fromParam) {
+    throw new BadRequest('?to=__&from=__ are required');
   }
-  user.tags.splice(to, 0, user.tags.splice(from, 1)[0]);
-  return typeof cb === "function" ? cb(null, user.tags) : void 0;
+
+  user.tags.splice(to, 0, user.tags.splice(fromParam, 1)[0]);
+  return user.tags;
 };
diff --git a/common/script/ops/sortTask.js b/common/script/ops/sortTask.js
index 212eaf4de2..ca79b03e24 100644
--- a/common/script/ops/sortTask.js
+++ b/common/script/ops/sortTask.js
@@ -1,41 +1,50 @@
 import i18n from '../i18n';
 import preenTodos from '../libs/preenTodos';
+import {
+  NotFound,
+  BadRequest,
+} from '../libs/errors';
+import _ from 'lodash';
 
 // TODO used only in client, move there?
 
-module.exports = function(user, req, cb) {
-  var from, id, movedTask, preenedTasks, ref, task, tasks, to;
-  id = req.params.id;
-  ref = req.query, to = ref.to, from = ref.from;
-  task = user.tasks[id];
+module.exports = function sortTag (user, req = {}) {
+  let id = _.get(req, 'params.id');
+  let to = _.get(req, 'query.to');
+  let fromParam = _.get(req, 'query.from');
+
+  let task = user.tasks[id];
+
   if (!task) {
-    return typeof cb === "function" ? cb({
-      code: 404,
-      message: i18n.t('messageTaskNotFound', req.language)
-    }) : void 0;
+    throw new NotFound(i18n.t('messageTaskNotFound', req.language));
   }
-  if (!((to != null) && (from != null))) {
-    return typeof cb === "function" ? cb('?to=__&from=__ are required') : void 0;
+  if (!to && !fromParam) {
+    throw new BadRequest('?to=__&from=__ are required');
   }
-  tasks = user[task.type + "s"];
-  if (task.type === 'todo' && tasks[from] !== task) {
-    preenedTasks = preenTodos(tasks);
+
+  let tasks = user[`${task.type}s`];
+
+  if (task.type === 'todo' && tasks[fromParam] !== task) {
+    let preenedTasks = preenTodos(tasks);
+
     if (to !== -1) {
       to = tasks.indexOf(preenedTasks[to]);
     }
-    from = tasks.indexOf(preenedTasks[from]);
+
+    fromParam = tasks.indexOf(preenedTasks[fromParam]);
   }
-  if (tasks[from] !== task) {
-    return typeof cb === "function" ? cb({
-      code: 404,
-      message: i18n.t('messageTaskNotFound', req.language)
-    }) : void 0;
+
+  if (tasks[fromParam] !== task) {
+    throw new NotFound(i18n.t('messageTaskNotFound', req.language));
   }
-  movedTask = tasks.splice(from, 1)[0];
+
+  let movedTask = tasks.splice(fromParam, 1)[0];
+
   if (to === -1) {
     tasks.push(movedTask);
   } else {
     tasks.splice(to, 0, movedTask);
   }
-  return typeof cb === "function" ? cb(null, tasks) : void 0;
+
+  return tasks;
 };
diff --git a/common/script/ops/update.js b/common/script/ops/update.js
index 12a100e372..c41e74180e 100644
--- a/common/script/ops/update.js
+++ b/common/script/ops/update.js
@@ -1,9 +1,11 @@
 import _ from 'lodash';
 
-module.exports = function(user, req, cb) {
-  _.each(req.body, function(v, k) {
-    user.fns.dotSet(k, v);
-    return true;
+// TODO used only in client, move there?
+
+module.exports = function updateUser (user, req = {}) {
+  _.each(req.body, (val, key) => {
+    _.set(user, key, val);
   });
-  return typeof cb === "function" ? cb(null, user) : void 0;
+
+  return user;
 };
diff --git a/common/script/ops/updateTag.js b/common/script/ops/updateTag.js
index 5e61ff8c6b..ade87f916d 100644
--- a/common/script/ops/updateTag.js
+++ b/common/script/ops/updateTag.js
@@ -1,20 +1,20 @@
 import i18n from '../i18n';
 import _ from 'lodash';
+import { NotFound } from '../libs/errors';
 
 // TODO used only in client, move there?
 
-module.exports = function(user, req, cb) {
-  var i, tid;
-  tid = req.params.id;
-  i = _.findIndex(user.tags, {
-    id: tid
+module.exports = function updateTag (user, req = {}) {
+  let tid = _.get(req, 'params.id');
+
+  let index = _.findIndex(user.tags, {
+    id: tid,
   });
-  if (!~i) {
-    return typeof cb === "function" ? cb({
-      code: 404,
-      message: i18n.t('messageTagNotFound', req.language)
-    }) : void 0;
+
+  if (index === -1) {
+    throw new NotFound(i18n.t('messageTagNotFound', req.language));
   }
-  user.tags[i].name = req.body.name;
-  return typeof cb === "function" ? cb(null, user.tags[i]) : void 0;
+
+  user.tags[index].name = _.get(req, 'body.name');
+  return user.tags[index];
 };
diff --git a/tasks/gulp-eslint.js b/tasks/gulp-eslint.js
index fc542d4faf..998a8c040e 100644
--- a/tasks/gulp-eslint.js
+++ b/tasks/gulp-eslint.js
@@ -11,16 +11,11 @@ const COMMON_FILES = [
   // @TODO remove these negations as the files are converted over.
   '!./common/script/content/index.js',
   '!./common/script/ops/addPushDevice.js',
-  '!./common/script/ops/addTag.js',
   '!./common/script/ops/addWebhook.js',
   '!./common/script/ops/blockUser.js',
   '!./common/script/ops/clearPMs.js',
   '!./common/script/ops/deletePM.js',
-  '!./common/script/ops/deleteTag.js',
-  '!./common/script/ops/deleteTask.js',
   '!./common/script/ops/deleteWebhook.js',
-  '!./common/script/ops/getTag.js',
-  '!./common/script/ops/getTags.js',
   '!./common/script/ops/rebirth.js',
   '!./common/script/ops/releaseBoth.js',
   '!./common/script/ops/releaseMounts.js',
@@ -29,11 +24,8 @@ const COMMON_FILES = [
   '!./common/script/ops/reset.js',
   '!./common/script/ops/revive.js',
   '!./common/script/ops/sell.js',
-  '!./common/script/ops/sortTag.js',
-  '!./common/script/ops/sortTask.js',
   '!./common/script/ops/unlock.js',
   '!./common/script/ops/update.js',
-  '!./common/script/ops/updateTag.js',
   '!./common/script/ops/updateWebhook.js',
   '!./common/script/fns/crit.js',
   '!./common/script/fns/cron.js',
@@ -55,7 +47,6 @@ const COMMON_FILES = [
   '!./common/script/libs/percent.js',
   '!./common/script/libs/planGemLimits.js',
   '!./common/script/libs/preenHistory.js',
-  '!./common/script/libs/preenTodos.js',
   '!./common/script/libs/removeWhitespace.js',
   '!./common/script/libs/silver.js',
   '!./common/script/libs/splitWhitespace.js',
diff --git a/test/api/v2/members/POST-members_id_gift.test.js b/test/api/v2/members/POST-members_id_gift.test.js
index c67a7ef79e..d36306a79d 100644
--- a/test/api/v2/members/POST-members_id_gift.test.js
+++ b/test/api/v2/members/POST-members_id_gift.test.js
@@ -2,7 +2,7 @@ import {
   generateUser,
 } from '../../../helpers/api-integration/v2';
 
-xdescribe('POST /members/id/gift', () => {
+describe('POST /members/id/gift', () => {
   let userWithBalance, userWithoutBalance;
 
   beforeEach(async () => {
diff --git a/test/api/v2/members/POST-members_id_message.test.js b/test/api/v2/members/POST-members_id_message.test.js
index 12d77cd1f4..ffbc02266a 100644
--- a/test/api/v2/members/POST-members_id_message.test.js
+++ b/test/api/v2/members/POST-members_id_message.test.js
@@ -2,7 +2,7 @@ import {
   generateUser,
 } from '../../../helpers/api-integration/v2';
 
-xdescribe('POST /members/id/message', () => {
+describe('POST /members/id/message', () => {
   let sender, recipient;
 
   beforeEach(async () => {