diff --git a/services/document-updater/app/js/DeleteQueueManager.js b/services/document-updater/app/js/DeleteQueueManager.js
index 2aa4db32b8..d0edcd2f24 100644
--- a/services/document-updater/app/js/DeleteQueueManager.js
+++ b/services/document-updater/app/js/DeleteQueueManager.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -41,16 +40,16 @@ module.exports = DeleteQueueManager = {
       startTime - options.min_delete_age + 100 * (Math.random() - 0.5)
     let count = 0
 
-    const flushProjectIfNotModified = (project_id, flushTimestamp, cb) =>
+    const flushProjectIfNotModified = (projectId, flushTimestamp, cb) =>
       ProjectManager.getProjectDocsTimestamps(
-        project_id,
+        projectId,
         function (err, timestamps) {
           if (err != null) {
             return callback(err)
           }
           if (timestamps.length === 0) {
             logger.debug(
-              { project_id },
+              { projectId },
               'skipping flush of queued project - no timestamps'
             )
             return cb()
@@ -60,22 +59,19 @@ module.exports = DeleteQueueManager = {
             if (timestamp > flushTimestamp) {
               metrics.inc('queued-delete-skipped')
               logger.debug(
-                { project_id, timestamps, flushTimestamp },
+                { projectId, timestamps, flushTimestamp },
                 'found newer timestamp, will skip delete'
               )
               return cb()
             }
           }
-          logger.debug(
-            { project_id, flushTimestamp },
-            'flushing queued project'
-          )
+          logger.debug({ projectId, flushTimestamp }, 'flushing queued project')
           return ProjectManager.flushAndDeleteProjectWithLocks(
-            project_id,
+            projectId,
             { skip_history_flush: false },
             function (err) {
               if (err != null) {
-                logger.err({ project_id, err }, 'error flushing queued project')
+                logger.err({ projectId, err }, 'error flushing queued project')
               }
               metrics.inc('queued-delete-completed')
               return cb(null, true)
@@ -96,17 +92,17 @@ module.exports = DeleteQueueManager = {
       }
       return RedisManager.getNextProjectToFlushAndDelete(
         cutoffTime,
-        function (err, project_id, flushTimestamp, queueLength) {
+        function (err, projectId, flushTimestamp, queueLength) {
           if (err != null) {
             return callback(err, count)
           }
-          if (project_id == null) {
+          if (projectId == null) {
             return callback(null, count)
           }
-          logger.debug({ project_id, queueLength }, 'flushing queued project')
+          logger.debug({ projectId, queueLength }, 'flushing queued project')
           metrics.globalGauge('queued-flush-backlog', queueLength)
           return flushProjectIfNotModified(
-            project_id,
+            projectId,
             flushTimestamp,
             function (err, flushed) {
               if (err) {
diff --git a/services/document-updater/app/js/DispatchManager.js b/services/document-updater/app/js/DispatchManager.js
index 9a0aa56df7..95ac03b6f1 100644
--- a/services/document-updater/app/js/DispatchManager.js
+++ b/services/document-updater/app/js/DispatchManager.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -51,15 +50,15 @@ module.exports = DispatchManager = {
           if (result == null) {
             return callback()
           }
-          const [list_name, doc_key] = Array.from(result)
-          const [project_id, doc_id] = Array.from(
-            Keys.splitProjectIdAndDocId(doc_key)
+          const [listName, docKey] = Array.from(result)
+          const [projectId, docId] = Array.from(
+            Keys.splitProjectIdAndDocId(docKey)
           )
           // Dispatch this in the background
           const backgroundTask = cb =>
             UpdateManager.processOutstandingUpdatesWithLock(
-              project_id,
-              doc_id,
+              projectId,
+              docId,
               function (error) {
                 // log everything except OpRangeNotAvailable errors, these are normal
                 if (error != null) {
@@ -69,12 +68,12 @@ module.exports = DispatchManager = {
                     error instanceof Errors.DeleteMismatchError
                   if (logAsDebug) {
                     logger.debug(
-                      { err: error, project_id, doc_id },
+                      { err: error, projectId, docId },
                       'error processing update'
                     )
                   } else {
                     logger.error(
-                      { err: error, project_id, doc_id },
+                      { err: error, projectId, docId },
                       'error processing update'
                     )
                   }
diff --git a/services/document-updater/app/js/HistoryManager.js b/services/document-updater/app/js/HistoryManager.js
index 2199a12c10..7118e92b0a 100644
--- a/services/document-updater/app/js/HistoryManager.js
+++ b/services/document-updater/app/js/HistoryManager.js
@@ -1,6 +1,3 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 /*
@@ -20,25 +17,25 @@ const RedisManager = require('./RedisManager')
 const metrics = require('./Metrics')
 
 module.exports = HistoryManager = {
-  flushDocChangesAsync(project_id, doc_id) {
+  flushDocChangesAsync(projectId, docId) {
     if (
       (Settings.apis != null ? Settings.apis.trackchanges : undefined) == null
     ) {
       logger.warn(
-        { doc_id },
+        { docId },
         'track changes API is not configured, so not flushing'
       )
       return
     }
     if (Settings.disableTrackChanges) {
-      logger.debug({ doc_id }, 'track changes is disabled, so not flushing')
+      logger.debug({ docId }, 'track changes is disabled, so not flushing')
       return
     }
     return RedisManager.getHistoryType(
-      doc_id,
+      docId,
       function (err, projectHistoryType) {
         if (err != null) {
-          logger.warn({ err, doc_id }, 'error getting history type')
+          logger.warn({ err, docId }, 'error getting history type')
         }
         // if there's an error continue and flush to track-changes for safety
         if (
@@ -46,25 +43,25 @@ module.exports = HistoryManager = {
           projectHistoryType === 'project-history'
         ) {
           return logger.debug(
-            { doc_id, projectHistoryType },
+            { docId, projectHistoryType },
             'skipping track-changes flush'
           )
         } else {
           metrics.inc('history-flush', 1, { status: 'track-changes' })
-          const url = `${Settings.apis.trackchanges.url}/project/${project_id}/doc/${doc_id}/flush`
+          const url = `${Settings.apis.trackchanges.url}/project/${projectId}/doc/${docId}/flush`
           logger.debug(
-            { project_id, doc_id, url, projectHistoryType },
+            { projectId, docId, url, projectHistoryType },
             'flushing doc in track changes api'
           )
           return request.post(url, function (error, res, body) {
             if (error != null) {
               return logger.error(
-                { error, doc_id, project_id },
+                { error, docId, projectId },
                 'track changes doc to track changes api'
               )
             } else if (res.statusCode < 200 && res.statusCode >= 300) {
               return logger.error(
-                { doc_id, project_id },
+                { docId, projectId },
                 `track changes api returned a failure status code: ${res.statusCode}`
               )
             }
@@ -75,19 +72,19 @@ module.exports = HistoryManager = {
   },
 
   // flush changes in the background
-  flushProjectChangesAsync(project_id) {
+  flushProjectChangesAsync(projectId) {
     if (!Settings.apis?.project_history?.enabled) {
       return
     }
     return HistoryManager.flushProjectChanges(
-      project_id,
+      projectId,
       { background: true },
       function () {}
     )
   },
 
   // flush changes and callback (for when we need to know the queue is flushed)
-  flushProjectChanges(project_id, options, callback) {
+  flushProjectChanges(projectId, options, callback) {
     if (callback == null) {
       callback = function () {}
     }
@@ -95,26 +92,26 @@ module.exports = HistoryManager = {
       return callback()
     }
     if (options.skip_history_flush) {
-      logger.debug({ project_id }, 'skipping flush of project history')
+      logger.debug({ projectId }, 'skipping flush of project history')
       return callback()
     }
     metrics.inc('history-flush', 1, { status: 'project-history' })
-    const url = `${Settings.apis.project_history.url}/project/${project_id}/flush`
+    const url = `${Settings.apis.project_history.url}/project/${projectId}/flush`
     const qs = {}
     if (options.background) {
       qs.background = true
     } // pass on the background flush option if present
-    logger.debug({ project_id, url, qs }, 'flushing doc in project history api')
+    logger.debug({ projectId, url, qs }, 'flushing doc in project history api')
     return request.post({ url, qs }, function (error, res, body) {
       if (error != null) {
         logger.error(
-          { error, project_id },
+          { error, projectId },
           'project history doc to track changes api'
         )
         return callback(error)
       } else if (res.statusCode < 200 && res.statusCode >= 300) {
         logger.error(
-          { project_id },
+          { projectId },
           `project history api returned a failure status code: ${res.statusCode}`
         )
         return callback(error)
@@ -128,11 +125,11 @@ module.exports = HistoryManager = {
   FLUSH_PROJECT_EVERY_N_OPS: 500,
 
   recordAndFlushHistoryOps(
-    project_id,
-    doc_id,
+    projectId,
+    docId,
     ops,
-    doc_ops_length,
-    project_ops_length,
+    docOpsLength,
+    projectOpsLength,
     callback
   ) {
     if (ops == null) {
@@ -149,7 +146,7 @@ module.exports = HistoryManager = {
     if (Settings.apis?.project_history?.enabled) {
       if (
         HistoryManager.shouldFlushHistoryOps(
-          project_ops_length,
+          projectOpsLength,
           ops.length,
           HistoryManager.FLUSH_PROJECT_EVERY_N_OPS
         )
@@ -157,18 +154,18 @@ module.exports = HistoryManager = {
         // Do this in the background since it uses HTTP and so may be too
         // slow to wait for when processing a doc update.
         logger.debug(
-          { project_ops_length, project_id },
+          { projectOpsLength, projectId },
           'flushing project history api'
         )
-        HistoryManager.flushProjectChangesAsync(project_id)
+        HistoryManager.flushProjectChangesAsync(projectId)
       }
     }
 
     // if the doc_ops_length is undefined it means the project is not using track-changes
     // so we can bail out here
-    if (Settings.disableTrackChanges || typeof doc_ops_length === 'undefined') {
+    if (Settings.disableTrackChanges || typeof docOpsLength === 'undefined') {
       logger.debug(
-        { project_id, doc_id },
+        { projectId, docId },
         'skipping flush to track-changes, only using project-history'
       )
       return callback()
@@ -176,8 +173,8 @@ module.exports = HistoryManager = {
 
     // record updates for track-changes
     return HistoryRedisManager.recordDocHasHistoryOps(
-      project_id,
-      doc_id,
+      projectId,
+      docId,
       ops,
       function (error) {
         if (error != null) {
@@ -185,7 +182,7 @@ module.exports = HistoryManager = {
         }
         if (
           HistoryManager.shouldFlushHistoryOps(
-            doc_ops_length,
+            docOpsLength,
             ops.length,
             HistoryManager.FLUSH_DOC_EVERY_N_OPS
           )
@@ -193,17 +190,17 @@ module.exports = HistoryManager = {
           // Do this in the background since it uses HTTP and so may be too
           // slow to wait for when processing a doc update.
           logger.debug(
-            { doc_ops_length, doc_id, project_id },
+            { docOpsLength, docId, projectId },
             'flushing track changes api'
           )
-          HistoryManager.flushDocChangesAsync(project_id, doc_id)
+          HistoryManager.flushDocChangesAsync(projectId, docId)
         }
         return callback()
       }
     )
   },
 
-  shouldFlushHistoryOps(length, ops_length, threshold) {
+  shouldFlushHistoryOps(length, opsLength, threshold) {
     if (!length) {
       return false
     } // don't flush unless we know the length
@@ -211,7 +208,7 @@ module.exports = HistoryManager = {
     // Find out which 'block' (i.e. 0-99, 100-199) we were in before and after pushing these
     // ops. If we've changed, then we've gone over a multiple of 100 and should flush.
     // (Most of the time, we will only hit 100 and then flushing will put us back to 0)
-    const previousLength = length - ops_length
+    const previousLength = length - opsLength
     const prevBlock = Math.floor(previousLength / threshold)
     const newBlock = Math.floor(length / threshold)
     return newBlock !== prevBlock
@@ -219,9 +216,9 @@ module.exports = HistoryManager = {
 
   MAX_PARALLEL_REQUESTS: 4,
 
-  resyncProjectHistory(project_id, projectHistoryId, docs, files, callback) {
+  resyncProjectHistory(projectId, projectHistoryId, docs, files, callback) {
     return ProjectHistoryRedisManager.queueResyncProjectStructure(
-      project_id,
+      projectId,
       projectHistoryId,
       docs,
       files,
@@ -232,7 +229,7 @@ module.exports = HistoryManager = {
         const DocumentManager = require('./DocumentManager')
         const resyncDoc = (doc, cb) => {
           DocumentManager.resyncDocContentsWithLock(
-            project_id,
+            projectId,
             doc.doc,
             doc.path,
             cb
diff --git a/services/document-updater/app/js/HistoryRedisManager.js b/services/document-updater/app/js/HistoryRedisManager.js
index 4756201471..e658c94a99 100644
--- a/services/document-updater/app/js/HistoryRedisManager.js
+++ b/services/document-updater/app/js/HistoryRedisManager.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -17,7 +16,7 @@ const Keys = Settings.redis.history.key_schema
 const logger = require('@overleaf/logger')
 
 module.exports = HistoryRedisManager = {
-  recordDocHasHistoryOps(project_id, doc_id, ops, callback) {
+  recordDocHasHistoryOps(projectId, docId, ops, callback) {
     if (ops == null) {
       ops = []
     }
@@ -27,13 +26,10 @@ module.exports = HistoryRedisManager = {
     if (ops.length === 0) {
       return callback(new Error('cannot push no ops')) // This should never be called with no ops, but protect against a redis error if we sent an empty array to rpush
     }
-    logger.debug(
-      { project_id, doc_id },
-      'marking doc in project for history ops'
-    )
+    logger.debug({ projectId, docId }, 'marking doc in project for history ops')
     return rclient.sadd(
-      Keys.docsWithHistoryOps({ project_id }),
-      doc_id,
+      Keys.docsWithHistoryOps({ project_id: projectId }),
+      docId,
       function (error) {
         if (error != null) {
           return callback(error)
diff --git a/services/document-updater/app/js/ProjectFlusher.js b/services/document-updater/app/js/ProjectFlusher.js
index 355e7b2f52..112f89273a 100644
--- a/services/document-updater/app/js/ProjectFlusher.js
+++ b/services/document-updater/app/js/ProjectFlusher.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -92,20 +91,20 @@ const ProjectFlusher = {
     return ProjectFlusher._getKeys(
       docUpdaterKeys.docsInProject({ project_id: '*' }),
       options.limit,
-      function (error, project_keys) {
+      function (error, projectKeys) {
         if (error != null) {
           logger.err({ err: error }, 'error getting keys for flushing')
           return callback(error)
         }
-        const project_ids = ProjectFlusher._extractIds(project_keys)
+        const projectIds = ProjectFlusher._extractIds(projectKeys)
         if (options.dryRun) {
-          return callback(null, project_ids)
+          return callback(null, projectIds)
         }
         const jobs = _.map(
-          project_ids,
-          project_id => cb =>
+          projectIds,
+          projectId => cb =>
             ProjectManager.flushAndDeleteProjectWithLocks(
-              project_id,
+              projectId,
               { background: true },
               cb
             )
@@ -118,9 +117,9 @@ const ProjectFlusher = {
             const failure = []
             _.each(results, function (result, i) {
               if (result.error != null) {
-                return failure.push(project_ids[i])
+                return failure.push(projectIds[i])
               } else {
-                return success.push(project_ids[i])
+                return success.push(projectIds[i])
               }
             })
             logger.info(
diff --git a/services/document-updater/app/js/RangesManager.js b/services/document-updater/app/js/RangesManager.js
index 8116333b41..e2b2a31ca6 100644
--- a/services/document-updater/app/js/RangesManager.js
+++ b/services/document-updater/app/js/RangesManager.js
@@ -1,6 +1,3 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 /*
@@ -22,7 +19,7 @@ module.exports = RangesManager = {
   MAX_COMMENTS: 500,
   MAX_CHANGES: 2000,
 
-  applyUpdate(project_id, doc_id, entries, updates, newDocLines, callback) {
+  applyUpdate(projectId, docId, entries, updates, newDocLines, callback) {
     let error
     if (entries == null) {
       entries = {}
@@ -72,7 +69,7 @@ module.exports = RangesManager = {
     } catch (error2) {
       error = error2
       logger.error(
-        { err: error, project_id, doc_id, newDocLines, updates },
+        { err: error, projectId, docId, newDocLines, updates },
         'error validating ranges'
       )
       return callback(error)
@@ -95,8 +92,8 @@ module.exports = RangesManager = {
     const response = RangesManager._getRanges(rangesTracker)
     logger.debug(
       {
-        project_id,
-        doc_id,
+        projectId,
+        docId,
         changesCount:
           response.changes != null ? response.changes.length : undefined,
         commentsCount:
@@ -108,26 +105,26 @@ module.exports = RangesManager = {
     return callback(null, response, rangesWereCollapsed)
   },
 
-  acceptChanges(change_ids, ranges, callback) {
+  acceptChanges(changeIds, ranges, callback) {
     if (callback == null) {
       callback = function () {}
     }
     const { changes, comments } = ranges
-    logger.debug(`accepting ${change_ids.length} changes in ranges`)
+    logger.debug(`accepting ${changeIds.length} changes in ranges`)
     const rangesTracker = new RangesTracker(changes, comments)
-    rangesTracker.removeChangeIds(change_ids)
+    rangesTracker.removeChangeIds(changeIds)
     const response = RangesManager._getRanges(rangesTracker)
     return callback(null, response)
   },
 
-  deleteComment(comment_id, ranges, callback) {
+  deleteComment(commentId, ranges, callback) {
     if (callback == null) {
       callback = function () {}
     }
     const { changes, comments } = ranges
-    logger.debug({ comment_id }, 'deleting comment in ranges')
+    logger.debug({ commentId }, 'deleting comment in ranges')
     const rangesTracker = new RangesTracker(changes, comments)
-    rangesTracker.removeCommentId(comment_id)
+    rangesTracker.removeCommentId(commentId)
     const response = RangesManager._getRanges(rangesTracker)
     return callback(null, response)
   },
diff --git a/services/document-updater/app/js/RealTimeRedisManager.js b/services/document-updater/app/js/RealTimeRedisManager.js
index c84583a7dc..27dd0b40df 100644
--- a/services/document-updater/app/js/RealTimeRedisManager.js
+++ b/services/document-updater/app/js/RealTimeRedisManager.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -32,10 +31,18 @@ let COUNT = 0
 const MAX_OPS_PER_ITERATION = 8 // process a limited number of ops for safety
 
 module.exports = RealTimeRedisManager = {
-  getPendingUpdatesForDoc(doc_id, callback) {
+  getPendingUpdatesForDoc(docId, callback) {
     const multi = rclient.multi()
-    multi.lrange(Keys.pendingUpdates({ doc_id }), 0, MAX_OPS_PER_ITERATION - 1)
-    multi.ltrim(Keys.pendingUpdates({ doc_id }), MAX_OPS_PER_ITERATION, -1)
+    multi.lrange(
+      Keys.pendingUpdates({ doc_id: docId }),
+      0,
+      MAX_OPS_PER_ITERATION - 1
+    )
+    multi.ltrim(
+      Keys.pendingUpdates({ doc_id: docId }),
+      MAX_OPS_PER_ITERATION,
+      -1
+    )
     return multi.exec(function (error, replys) {
       let jsonUpdate
       if (error != null) {
@@ -62,15 +69,15 @@ module.exports = RealTimeRedisManager = {
     })
   },
 
-  getUpdatesLength(doc_id, callback) {
-    return rclient.llen(Keys.pendingUpdates({ doc_id }), callback)
+  getUpdatesLength(docId, callback) {
+    return rclient.llen(Keys.pendingUpdates({ doc_id: docId }), callback)
   },
 
   sendData(data) {
     // create a unique message id using a counter
-    const message_id = `doc:${HOST}:${RND}-${COUNT++}`
+    const messageId = `doc:${HOST}:${RND}-${COUNT++}`
     if (data != null) {
-      data._id = message_id
+      data._id = messageId
     }
 
     const blob = JSON.stringify(data)
diff --git a/services/document-updater/app/js/RedisManager.js b/services/document-updater/app/js/RedisManager.js
index 60128a8923..23279e72e1 100644
--- a/services/document-updater/app/js/RedisManager.js
+++ b/services/document-updater/app/js/RedisManager.js
@@ -443,7 +443,7 @@ module.exports = RedisManager = {
             docId,
             version: newVersion,
             hash: newHash,
-            op_versions: opVersions,
+            opVersions,
           },
           'updating doc in redis'
         )
diff --git a/services/document-updater/app/js/ShareJsDB.js b/services/document-updater/app/js/ShareJsDB.js
index 65e234d085..7cfeef3922 100644
--- a/services/document-updater/app/js/ShareJsDB.js
+++ b/services/document-updater/app/js/ShareJsDB.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -17,9 +16,9 @@ const RedisManager = require('./RedisManager')
 const Errors = require('./Errors')
 
 module.exports = ShareJsDB = class ShareJsDB {
-  constructor(project_id, doc_id, lines, version) {
-    this.project_id = project_id
-    this.doc_id = doc_id
+  constructor(projectId, docId, lines, version) {
+    this.project_id = projectId
+    this.doc_id = docId
     this.lines = lines
     this.version = version
     this.appliedOps = {}
@@ -28,7 +27,7 @@ module.exports = ShareJsDB = class ShareJsDB {
     this.writeOp = this._writeOp.bind(this)
   }
 
-  getOps(doc_key, start, end, callback) {
+  getOps(docKey, start, end, callback) {
     if (start === end) {
       return callback(null, [])
     }
@@ -40,27 +39,25 @@ module.exports = ShareJsDB = class ShareJsDB {
       end = -1
     }
 
-    const [project_id, doc_id] = Array.from(
-      Keys.splitProjectIdAndDocId(doc_key)
-    )
-    return RedisManager.getPreviousDocOps(doc_id, start, end, callback)
+    const [projectId, docId] = Array.from(Keys.splitProjectIdAndDocId(docKey))
+    return RedisManager.getPreviousDocOps(docId, start, end, callback)
   }
 
-  _writeOp(doc_key, opData, callback) {
-    if (this.appliedOps[doc_key] == null) {
-      this.appliedOps[doc_key] = []
+  _writeOp(docKey, opData, callback) {
+    if (this.appliedOps[docKey] == null) {
+      this.appliedOps[docKey] = []
     }
-    this.appliedOps[doc_key].push(opData)
+    this.appliedOps[docKey].push(opData)
     return callback()
   }
 
-  getSnapshot(doc_key, callback) {
+  getSnapshot(docKey, callback) {
     if (
-      doc_key !== Keys.combineProjectIdAndDocId(this.project_id, this.doc_id)
+      docKey !== Keys.combineProjectIdAndDocId(this.project_id, this.doc_id)
     ) {
       return callback(
         new Errors.NotFoundError(
-          `unexpected doc_key ${doc_key}, expected ${Keys.combineProjectIdAndDocId(
+          `unexpected doc_key ${docKey}, expected ${Keys.combineProjectIdAndDocId(
             this.project_id,
             this.doc_id
           )}`
diff --git a/services/document-updater/app/js/ShareJsUpdateManager.js b/services/document-updater/app/js/ShareJsUpdateManager.js
index cd68a41f2e..2250973b9b 100644
--- a/services/document-updater/app/js/ShareJsUpdateManager.js
+++ b/services/document-updater/app/js/ShareJsUpdateManager.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -30,8 +29,8 @@ util.inherits(ShareJsModel, EventEmitter)
 const MAX_AGE_OF_OP = 80
 
 module.exports = ShareJsUpdateManager = {
-  getNewShareJsModel(project_id, doc_id, lines, version) {
-    const db = new ShareJsDB(project_id, doc_id, lines, version)
+  getNewShareJsModel(projectId, docId, lines, version) {
+    const db = new ShareJsDB(projectId, docId, lines, version)
     const model = new ShareJsModel(db, {
       maxDocLength: Settings.max_doc_length,
       maximumAge: MAX_AGE_OF_OP,
@@ -40,11 +39,11 @@ module.exports = ShareJsUpdateManager = {
     return model
   },
 
-  applyUpdate(project_id, doc_id, update, lines, version, callback) {
+  applyUpdate(projectId, docId, update, lines, version, callback) {
     if (callback == null) {
       callback = function () {}
     }
-    logger.debug({ project_id, doc_id, update }, 'applying sharejs updates')
+    logger.debug({ projectId, docId, update }, 'applying sharejs updates')
     const jobs = []
     // record the update version before it is modified
     const incomingUpdateVersion = update.v
@@ -53,23 +52,23 @@ module.exports = ShareJsUpdateManager = {
     // getting stuck due to queued callbacks (line 260 of sharejs/server/model.coffee)
     // This adds a small but hopefully acceptable overhead (~12ms per 1000 updates on
     // my 2009 MBP).
-    const model = this.getNewShareJsModel(project_id, doc_id, lines, version)
+    const model = this.getNewShareJsModel(projectId, docId, lines, version)
     this._listenForOps(model)
-    const doc_key = Keys.combineProjectIdAndDocId(project_id, doc_id)
-    return model.applyOp(doc_key, update, function (error) {
+    const docKey = Keys.combineProjectIdAndDocId(projectId, docId)
+    return model.applyOp(docKey, update, function (error) {
       if (error != null) {
         if (error === 'Op already submitted') {
           metrics.inc('sharejs.already-submitted')
           logger.debug(
-            { project_id, doc_id, update },
+            { projectId, docId, update },
             'op has already been submitted'
           )
           update.dup = true
-          ShareJsUpdateManager._sendOp(project_id, doc_id, update)
+          ShareJsUpdateManager._sendOp(projectId, docId, update)
         } else if (/^Delete component/.test(error)) {
           metrics.inc('sharejs.delete-mismatch')
           logger.debug(
-            { project_id, doc_id, update, shareJsErr: error },
+            { projectId, docId, update, shareJsErr: error },
             'sharejs delete does not match'
           )
           error = new Errors.DeleteMismatchError(
@@ -81,8 +80,8 @@ module.exports = ShareJsUpdateManager = {
           return callback(error)
         }
       }
-      logger.debug({ project_id, doc_id, error }, 'applied update')
-      return model.getSnapshot(doc_key, (error, data) => {
+      logger.debug({ projectId, docId, error }, 'applied update')
+      return model.getSnapshot(docKey, (error, data) => {
         if (error != null) {
           return callback(error)
         }
@@ -93,7 +92,7 @@ module.exports = ShareJsUpdateManager = {
             'blocking persistence of ShareJs update: doc size exceeds limits'
           )
           logger.error(
-            { project_id, doc_id, err, docSizeBefore, docSizeAfter },
+            { projectId, docId, err, docSizeBefore, docSizeAfter },
             err.message
           )
           metrics.inc('sharejs.other-error')
@@ -115,23 +114,25 @@ module.exports = ShareJsUpdateManager = {
           null,
           docLines,
           data.v,
-          model.db.appliedOps[doc_key] || []
+          model.db.appliedOps[docKey] || []
         )
       })
     })
   },
 
   _listenForOps(model) {
-    return model.on('applyOp', function (doc_key, opData) {
-      const [project_id, doc_id] = Array.from(
-        Keys.splitProjectIdAndDocId(doc_key)
-      )
-      return ShareJsUpdateManager._sendOp(project_id, doc_id, opData)
+    return model.on('applyOp', function (docKey, opData) {
+      const [projectId, docId] = Array.from(Keys.splitProjectIdAndDocId(docKey))
+      return ShareJsUpdateManager._sendOp(projectId, docId, opData)
     })
   },
 
-  _sendOp(project_id, doc_id, op) {
-    return RealTimeRedisManager.sendData({ project_id, doc_id, op })
+  _sendOp(projectId, docId, op) {
+    return RealTimeRedisManager.sendData({
+      project_id: projectId,
+      doc_id: docId,
+      op,
+    })
   },
 
   _computeHash(content) {
diff --git a/services/document-updater/app/js/SnapshotManager.js b/services/document-updater/app/js/SnapshotManager.js
index 3fd87b4540..78084e024c 100644
--- a/services/document-updater/app/js/SnapshotManager.js
+++ b/services/document-updater/app/js/SnapshotManager.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -15,25 +14,17 @@ let SnapshotManager
 const { db, ObjectId } = require('./mongodb')
 
 module.exports = SnapshotManager = {
-  recordSnapshot(
-    project_id,
-    doc_id,
-    version,
-    pathname,
-    lines,
-    ranges,
-    callback
-  ) {
+  recordSnapshot(projectId, docId, version, pathname, lines, ranges, callback) {
     try {
-      project_id = ObjectId(project_id)
-      doc_id = ObjectId(doc_id)
+      projectId = ObjectId(projectId)
+      docId = ObjectId(docId)
     } catch (error) {
       return callback(error)
     }
     db.docSnapshots.insertOne(
       {
-        project_id,
-        doc_id,
+        project_id: projectId,
+        doc_id: docId,
         version,
         lines,
         pathname,
diff --git a/services/document-updater/app/js/UpdateKeys.js b/services/document-updater/app/js/UpdateKeys.js
index 67e85e65c9..3c03dd1f85 100644
--- a/services/document-updater/app/js/UpdateKeys.js
+++ b/services/document-updater/app/js/UpdateKeys.js
@@ -1,13 +1,10 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 module.exports = {
-  combineProjectIdAndDocId(project_id, doc_id) {
-    return `${project_id}:${doc_id}`
+  combineProjectIdAndDocId(projectId, docId) {
+    return `${projectId}:${docId}`
   },
-  splitProjectIdAndDocId(project_and_doc_id) {
-    return project_and_doc_id.split(':')
+  splitProjectIdAndDocId(projectAndDocId) {
+    return projectAndDocId.split(':')
   },
 }
diff --git a/services/document-updater/app/js/UpdateManager.js b/services/document-updater/app/js/UpdateManager.js
index 77cb974abc..6ba3228107 100644
--- a/services/document-updater/app/js/UpdateManager.js
+++ b/services/document-updater/app/js/UpdateManager.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -31,14 +30,14 @@ const SnapshotManager = require('./SnapshotManager')
 const Profiler = require('./Profiler')
 
 module.exports = UpdateManager = {
-  processOutstandingUpdates(project_id, doc_id, callback) {
+  processOutstandingUpdates(projectId, docId, callback) {
     if (callback == null) {
       callback = function () {}
     }
     const timer = new Metrics.Timer('updateManager.processOutstandingUpdates')
     return UpdateManager.fetchAndApplyUpdates(
-      project_id,
-      doc_id,
+      projectId,
+      docId,
       function (error) {
         timer.done()
         if (error != null) {
@@ -49,15 +48,15 @@ module.exports = UpdateManager = {
     )
   },
 
-  processOutstandingUpdatesWithLock(project_id, doc_id, callback) {
+  processOutstandingUpdatesWithLock(projectId, docId, callback) {
     if (callback == null) {
       callback = function () {}
     }
     const profile = new Profiler('processOutstandingUpdatesWithLock', {
-      project_id,
-      doc_id,
+      project_id: projectId,
+      doc_id: docId,
     })
-    return LockManager.tryLock(doc_id, (error, gotLock, lockValue) => {
+    return LockManager.tryLock(docId, (error, gotLock, lockValue) => {
       if (error != null) {
         return callback(error)
       }
@@ -66,26 +65,26 @@ module.exports = UpdateManager = {
       }
       profile.log('tryLock')
       return UpdateManager.processOutstandingUpdates(
-        project_id,
-        doc_id,
+        projectId,
+        docId,
         function (error) {
           if (error != null) {
             return UpdateManager._handleErrorInsideLock(
-              doc_id,
+              docId,
               lockValue,
               error,
               callback
             )
           }
           profile.log('processOutstandingUpdates')
-          return LockManager.releaseLock(doc_id, lockValue, error => {
+          return LockManager.releaseLock(docId, lockValue, error => {
             if (error != null) {
               return callback(error)
             }
             profile.log('releaseLock').end()
             return UpdateManager.continueProcessingUpdatesWithLock(
-              project_id,
-              doc_id,
+              projectId,
+              docId,
               callback
             )
           })
@@ -94,18 +93,18 @@ module.exports = UpdateManager = {
     })
   },
 
-  continueProcessingUpdatesWithLock(project_id, doc_id, callback) {
+  continueProcessingUpdatesWithLock(projectId, docId, callback) {
     if (callback == null) {
       callback = function () {}
     }
-    return RealTimeRedisManager.getUpdatesLength(doc_id, (error, length) => {
+    return RealTimeRedisManager.getUpdatesLength(docId, (error, length) => {
       if (error != null) {
         return callback(error)
       }
       if (length > 0) {
         return UpdateManager.processOutstandingUpdatesWithLock(
-          project_id,
-          doc_id,
+          projectId,
+          docId,
           callback
         )
       } else {
@@ -114,19 +113,22 @@ module.exports = UpdateManager = {
     })
   },
 
-  fetchAndApplyUpdates(project_id, doc_id, callback) {
+  fetchAndApplyUpdates(projectId, docId, callback) {
     if (callback == null) {
       callback = function () {}
     }
-    const profile = new Profiler('fetchAndApplyUpdates', { project_id, doc_id })
+    const profile = new Profiler('fetchAndApplyUpdates', {
+      project_id: projectId,
+      doc_id: docId,
+    })
     return RealTimeRedisManager.getPendingUpdatesForDoc(
-      doc_id,
+      docId,
       (error, updates) => {
         if (error != null) {
           return callback(error)
         }
         logger.debug(
-          { project_id, doc_id, count: updates.length },
+          { projectId, docId, count: updates.length },
           'processing updates'
         )
         if (updates.length === 0) {
@@ -134,7 +136,7 @@ module.exports = UpdateManager = {
         }
         profile.log('getPendingUpdatesForDoc')
         const doUpdate = (update, cb) =>
-          UpdateManager.applyUpdate(project_id, doc_id, update, function (err) {
+          UpdateManager.applyUpdate(projectId, docId, update, function (err) {
             profile.log('applyUpdate')
             return cb(err)
           })
@@ -147,15 +149,15 @@ module.exports = UpdateManager = {
     )
   },
 
-  applyUpdate(project_id, doc_id, update, _callback) {
+  applyUpdate(projectId, docId, update, _callback) {
     if (_callback == null) {
       _callback = function () {}
     }
     const callback = function (error) {
       if (error != null) {
         RealTimeRedisManager.sendData({
-          project_id,
-          doc_id,
+          project_id: projectId,
+          doc_id: docId,
           error: error.message || error,
         })
         profile.log('sendData')
@@ -164,12 +166,15 @@ module.exports = UpdateManager = {
       return _callback(error)
     }
 
-    const profile = new Profiler('applyUpdate', { project_id, doc_id })
+    const profile = new Profiler('applyUpdate', {
+      project_id: projectId,
+      doc_id: docId,
+    })
     UpdateManager._sanitizeUpdate(update)
     profile.log('sanitizeUpdate', { sync: true })
     return DocumentManager.getDoc(
-      project_id,
-      doc_id,
+      projectId,
+      docId,
       function (error, lines, version, ranges, pathname, projectHistoryId) {
         profile.log('getDoc')
         if (error != null) {
@@ -177,14 +182,14 @@ module.exports = UpdateManager = {
         }
         if (lines == null || version == null) {
           return callback(
-            new Errors.NotFoundError(`document not found: ${doc_id}`)
+            new Errors.NotFoundError(`document not found: ${docId}`)
           )
         }
         const previousVersion = version
         const incomingUpdateVersion = update.v
         return ShareJsUpdateManager.applyUpdate(
-          project_id,
-          doc_id,
+          projectId,
+          docId,
           update,
           lines,
           version,
@@ -198,12 +203,12 @@ module.exports = UpdateManager = {
               return callback(error)
             }
             return RangesManager.applyUpdate(
-              project_id,
-              doc_id,
+              projectId,
+              docId,
               ranges,
               appliedOps,
               updatedDocLines,
-              function (error, new_ranges, ranges_were_collapsed) {
+              function (error, newRanges, rangesWereCollapsed) {
                 UpdateManager._addProjectHistoryMetadataToOps(
                   appliedOps,
                   pathname,
@@ -215,35 +220,35 @@ module.exports = UpdateManager = {
                   return callback(error)
                 }
                 return RedisManager.updateDocument(
-                  project_id,
-                  doc_id,
+                  projectId,
+                  docId,
                   updatedDocLines,
                   version,
                   appliedOps,
-                  new_ranges,
+                  newRanges,
                   update.meta,
-                  function (error, doc_ops_length, project_ops_length) {
+                  function (error, docOpsLength, projectOpsLength) {
                     profile.log('RedisManager.updateDocument')
                     if (error != null) {
                       return callback(error)
                     }
                     return HistoryManager.recordAndFlushHistoryOps(
-                      project_id,
-                      doc_id,
+                      projectId,
+                      docId,
                       appliedOps,
-                      doc_ops_length,
-                      project_ops_length,
+                      docOpsLength,
+                      projectOpsLength,
                       function (error) {
                         profile.log('recordAndFlushHistoryOps')
                         if (error != null) {
                           return callback(error)
                         }
-                        if (ranges_were_collapsed) {
+                        if (rangesWereCollapsed) {
                           Metrics.inc('doc-snapshot')
                           logger.debug(
                             {
-                              project_id,
-                              doc_id,
+                              projectId,
+                              docId,
                               previousVersion,
                               lines,
                               ranges,
@@ -254,8 +259,8 @@ module.exports = UpdateManager = {
                           // Do this last, since it's a mongo call, and so potentially longest running
                           // If it overruns the lock, it's ok, since all of our redis work is done
                           return SnapshotManager.recordSnapshot(
-                            project_id,
-                            doc_id,
+                            projectId,
+                            docId,
                             previousVersion,
                             pathname,
                             lines,
@@ -265,8 +270,8 @@ module.exports = UpdateManager = {
                                 logger.error(
                                   {
                                     err: error,
-                                    project_id,
-                                    doc_id,
+                                    projectId,
+                                    docId,
                                     version,
                                     lines,
                                     ranges,
@@ -294,23 +299,26 @@ module.exports = UpdateManager = {
     )
   },
 
-  lockUpdatesAndDo(method, project_id, doc_id, ...rest) {
+  lockUpdatesAndDo(method, projectId, docId, ...rest) {
     const adjustedLength = Math.max(rest.length, 1)
     const args = rest.slice(0, adjustedLength - 1)
     const callback = rest[adjustedLength - 1]
-    const profile = new Profiler('lockUpdatesAndDo', { project_id, doc_id })
-    return LockManager.getLock(doc_id, function (error, lockValue) {
+    const profile = new Profiler('lockUpdatesAndDo', {
+      project_id: projectId,
+      doc_id: docId,
+    })
+    return LockManager.getLock(docId, function (error, lockValue) {
       profile.log('getLock')
       if (error != null) {
         return callback(error)
       }
       return UpdateManager.processOutstandingUpdates(
-        project_id,
-        doc_id,
+        projectId,
+        docId,
         function (error) {
           if (error != null) {
             return UpdateManager._handleErrorInsideLock(
-              doc_id,
+              docId,
               lockValue,
               error,
               callback
@@ -318,13 +326,13 @@ module.exports = UpdateManager = {
           }
           profile.log('processOutstandingUpdates')
           return method(
-            project_id,
-            doc_id,
+            projectId,
+            docId,
             ...Array.from(args),
-            function (error, ...response_args) {
+            function (error, ...responseArgs) {
               if (error != null) {
                 return UpdateManager._handleErrorInsideLock(
-                  doc_id,
+                  docId,
                   lockValue,
                   error,
                   callback
@@ -332,18 +340,18 @@ module.exports = UpdateManager = {
               }
               profile.log('method')
               return LockManager.releaseLock(
-                doc_id,
+                docId,
                 lockValue,
                 function (error) {
                   if (error != null) {
                     return callback(error)
                   }
                   profile.log('releaseLock').end()
-                  callback(null, ...Array.from(response_args))
+                  callback(null, ...Array.from(responseArgs))
                   // We held the lock for a while so updates might have queued up
                   return UpdateManager.continueProcessingUpdatesWithLock(
-                    project_id,
-                    doc_id,
+                    projectId,
+                    docId,
                     err => {
                       if (err) {
                         // The processing may fail for invalid user updates.
@@ -351,7 +359,7 @@ module.exports = UpdateManager = {
                         //  and record a metric.
                         Metrics.inc('background-processing-updates-error')
                         logger.debug(
-                          { err, project_id, doc_id },
+                          { err, projectId, docId },
                           'error processing updates in background'
                         )
                       }
@@ -366,12 +374,12 @@ module.exports = UpdateManager = {
     })
   },
 
-  _handleErrorInsideLock(doc_id, lockValue, original_error, callback) {
+  _handleErrorInsideLock(docId, lockValue, originalError, callback) {
     if (callback == null) {
       callback = function () {}
     }
-    return LockManager.releaseLock(doc_id, lockValue, lock_error =>
-      callback(original_error)
+    return LockManager.releaseLock(docId, lockValue, lockError =>
+      callback(originalError)
     )
   },
 
@@ -397,15 +405,15 @@ module.exports = UpdateManager = {
   },
 
   _addProjectHistoryMetadataToOps(updates, pathname, projectHistoryId, lines) {
-    let doc_length = _.reduce(lines, (chars, line) => chars + line.length, 0)
-    doc_length += lines.length - 1 // count newline characters
+    let docLength = _.reduce(lines, (chars, line) => chars + line.length, 0)
+    docLength += lines.length - 1 // count newline characters
     return updates.forEach(function (update) {
       update.projectHistoryId = projectHistoryId
       if (!update.meta) {
         update.meta = {}
       }
       update.meta.pathname = pathname
-      update.meta.doc_length = doc_length
+      update.meta.doc_length = docLength
       // Each update may contain multiple ops, i.e.
       // [{
       // 	ops: [{i: "foo", p: 4}, {d: "bar", p:8}]
@@ -419,10 +427,10 @@ module.exports = UpdateManager = {
         const result = []
         for (const op of Array.from(update.op)) {
           if (op.i != null) {
-            doc_length += op.i.length
+            docLength += op.i.length
           }
           if (op.d != null) {
-            result.push((doc_length -= op.d.length))
+            result.push((docLength -= op.d.length))
           } else {
             result.push(undefined)
           }
diff --git a/services/document-updater/app/js/sharejs/json-api.js b/services/document-updater/app/js/sharejs/json-api.js
index ed791cd323..e591f66743 100644
--- a/services/document-updater/app/js/sharejs/json-api.js
+++ b/services/document-updater/app/js/sharejs/json-api.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-undef,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -231,7 +230,7 @@ json.api = {
             // no change to structure
             continue
           }
-          const to_remove = []
+          const toRemove = []
           for (i = 0; i < this._listeners.length; i++) {
             // Transform a dummy op by the incoming op to work out what
             // should happen to the listener.
@@ -240,7 +239,7 @@ json.api = {
             const xformed = this.type.transformComponent([], dummy, c, 'left')
             if (xformed.length === 0) {
               // The op was transformed to noop, so we should delete the listener.
-              to_remove.push(i)
+              toRemove.push(i)
             } else if (xformed.length === 1) {
               // The op remained, so grab its new path into the listener.
               l.path = xformed[0].p
@@ -250,11 +249,11 @@ json.api = {
               )
             }
           }
-          to_remove.sort((a, b) => b - a)
+          toRemove.sort((a, b) => b - a)
           result.push(
             (() => {
               const result1 = []
-              for (i of Array.from(to_remove)) {
+              for (i of Array.from(toRemove)) {
                 result1.push(this._listeners.splice(i, 1))
               }
               return result1
@@ -268,14 +267,14 @@ json.api = {
       return (() => {
         const result = []
         for (const c of Array.from(op)) {
-          const match_path =
+          const matchPath =
             c.na === undefined ? c.p.slice(0, c.p.length - 1) : c.p
           result.push(
             (() => {
               const result1 = []
               for (const { path, event, cb } of Array.from(this._listeners)) {
                 let common
-                if (pathEquals(path, match_path)) {
+                if (pathEquals(path, matchPath)) {
                   switch (event) {
                     case 'insert':
                       if (c.li !== undefined && c.ld === undefined) {
@@ -326,19 +325,19 @@ json.api = {
                       result1.push(undefined)
                   }
                 } else if (
-                  (common = this.type.commonPath(match_path, path)) != null
+                  (common = this.type.commonPath(matchPath, path)) != null
                 ) {
                   if (event === 'child op') {
                     if (
-                      match_path.length === path.length &&
+                      matchPath.length === path.length &&
                       path.length === common
                     ) {
                       throw new Error(
                         "paths match length and have commonality, but aren't equal?"
                       )
                     }
-                    const child_path = c.p.slice(common + 1)
-                    result1.push(cb(child_path, c))
+                    const childPath = c.p.slice(common + 1)
+                    result1.push(cb(childPath, c))
                   } else {
                     result1.push(undefined)
                   }
diff --git a/services/document-updater/app/js/sharejs/text.js b/services/document-updater/app/js/sharejs/text.js
index 54f7094c45..254cab572b 100644
--- a/services/document-updater/app/js/sharejs/text.js
+++ b/services/document-updater/app/js/sharejs/text.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-undef,
 */
@@ -46,9 +45,9 @@ const checkValidComponent = function (c) {
     throw new Error('component missing position field')
   }
 
-  const i_type = typeof c.i
-  const d_type = typeof c.d
-  if (!((i_type === 'string') ^ (d_type === 'string'))) {
+  const iType = typeof c.i
+  const dType = typeof c.d
+  if (!((iType === 'string') ^ (dType === 'string'))) {
     throw new Error('component needs an i or d field')
   }
 
diff --git a/services/document-updater/app/js/sharejs/types/json-api.js b/services/document-updater/app/js/sharejs/types/json-api.js
index ed791cd323..e591f66743 100644
--- a/services/document-updater/app/js/sharejs/types/json-api.js
+++ b/services/document-updater/app/js/sharejs/types/json-api.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-undef,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -231,7 +230,7 @@ json.api = {
             // no change to structure
             continue
           }
-          const to_remove = []
+          const toRemove = []
           for (i = 0; i < this._listeners.length; i++) {
             // Transform a dummy op by the incoming op to work out what
             // should happen to the listener.
@@ -240,7 +239,7 @@ json.api = {
             const xformed = this.type.transformComponent([], dummy, c, 'left')
             if (xformed.length === 0) {
               // The op was transformed to noop, so we should delete the listener.
-              to_remove.push(i)
+              toRemove.push(i)
             } else if (xformed.length === 1) {
               // The op remained, so grab its new path into the listener.
               l.path = xformed[0].p
@@ -250,11 +249,11 @@ json.api = {
               )
             }
           }
-          to_remove.sort((a, b) => b - a)
+          toRemove.sort((a, b) => b - a)
           result.push(
             (() => {
               const result1 = []
-              for (i of Array.from(to_remove)) {
+              for (i of Array.from(toRemove)) {
                 result1.push(this._listeners.splice(i, 1))
               }
               return result1
@@ -268,14 +267,14 @@ json.api = {
       return (() => {
         const result = []
         for (const c of Array.from(op)) {
-          const match_path =
+          const matchPath =
             c.na === undefined ? c.p.slice(0, c.p.length - 1) : c.p
           result.push(
             (() => {
               const result1 = []
               for (const { path, event, cb } of Array.from(this._listeners)) {
                 let common
-                if (pathEquals(path, match_path)) {
+                if (pathEquals(path, matchPath)) {
                   switch (event) {
                     case 'insert':
                       if (c.li !== undefined && c.ld === undefined) {
@@ -326,19 +325,19 @@ json.api = {
                       result1.push(undefined)
                   }
                 } else if (
-                  (common = this.type.commonPath(match_path, path)) != null
+                  (common = this.type.commonPath(matchPath, path)) != null
                 ) {
                   if (event === 'child op') {
                     if (
-                      match_path.length === path.length &&
+                      matchPath.length === path.length &&
                       path.length === common
                     ) {
                       throw new Error(
                         "paths match length and have commonality, but aren't equal?"
                       )
                     }
-                    const child_path = c.p.slice(common + 1)
-                    result1.push(cb(child_path, c))
+                    const childPath = c.p.slice(common + 1)
+                    result1.push(cb(childPath, c))
                   } else {
                     result1.push(undefined)
                   }
diff --git a/services/document-updater/app/js/sharejs/types/text.js b/services/document-updater/app/js/sharejs/types/text.js
index bbbe36e0f6..ece4f86e1f 100644
--- a/services/document-updater/app/js/sharejs/types/text.js
+++ b/services/document-updater/app/js/sharejs/types/text.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-undef,
 */
@@ -46,12 +45,10 @@ const checkValidComponent = function (c) {
     throw new Error('component missing position field')
   }
 
-  const i_type = typeof c.i
-  const d_type = typeof c.d
-  const c_type = typeof c.c
-  if (
-    !((i_type === 'string') ^ (d_type === 'string') ^ (c_type === 'string'))
-  ) {
+  const iType = typeof c.i
+  const dType = typeof c.d
+  const cType = typeof c.c
+  if (!((iType === 'string') ^ (dType === 'string') ^ (cType === 'string'))) {
     throw new Error('component needs an i, d or c field')
   }
 
@@ -296,11 +293,11 @@ text._tc = transformComponent = function (dest, c, otherC, side) {
     if (otherC.i != null) {
       if (c.p < otherC.p && otherC.p < c.p + c.c.length) {
         const offset = otherC.p - c.p
-        const new_c =
+        const newC =
           c.c.slice(0, +(offset - 1) + 1 || undefined) +
           otherC.i +
           c.c.slice(offset)
-        append(dest, { c: new_c, p: c.p, t: c.t })
+        append(dest, { c: newC, p: c.p, t: c.t })
       } else {
         append(dest, {
           c: c.c,
diff --git a/services/document-updater/test/acceptance/js/ApplyingUpdatesToADocTests.js b/services/document-updater/test/acceptance/js/ApplyingUpdatesToADocTests.js
index 1835b7cc22..1c2040f914 100644
--- a/services/document-updater/test/acceptance/js/ApplyingUpdatesToADocTests.js
+++ b/services/document-updater/test/acceptance/js/ApplyingUpdatesToADocTests.js
@@ -1,6 +1,3 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 /*
@@ -14,13 +11,13 @@ const sinon = require('sinon')
 const { expect } = require('chai')
 const async = require('async')
 const Settings = require('@overleaf/settings')
-const rclient_history = require('@overleaf/redis-wrapper').createClient(
+const rclientHistory = require('@overleaf/redis-wrapper').createClient(
   Settings.redis.history
 ) // note: this is track changes, not project-history
-const rclient_project_history = require('@overleaf/redis-wrapper').createClient(
+const rclientProjectHistory = require('@overleaf/redis-wrapper').createClient(
   Settings.redis.project_history
 )
-const rclient_du = require('@overleaf/redis-wrapper').createClient(
+const rclientDU = require('@overleaf/redis-wrapper').createClient(
   Settings.redis.documentupdater
 )
 const Keys = Settings.redis.documentupdater.key_schema
@@ -100,7 +97,7 @@ describe('Applying updates to a doc', function () {
     })
 
     it('should push the applied updates to the track changes api', function (done) {
-      rclient_history.lrange(
+      rclientHistory.lrange(
         HistoryKeys.uncompressedHistoryOps({ doc_id: this.doc_id }),
         0,
         -1,
@@ -109,7 +106,7 @@ describe('Applying updates to a doc', function () {
             throw error
           }
           JSON.parse(updates[0]).op.should.deep.equal(this.update.op)
-          return rclient_history.sismember(
+          return rclientHistory.sismember(
             HistoryKeys.docsWithHistoryOps({ project_id: this.project_id }),
             this.doc_id,
             (error, result) => {
@@ -126,7 +123,7 @@ describe('Applying updates to a doc', function () {
     })
 
     it('should push the applied updates to the project history changes api', function (done) {
-      rclient_project_history.lrange(
+      rclientProjectHistory.lrange(
         ProjectHistoryKeys.projectHistoryOps({ project_id: this.project_id }),
         0,
         -1,
@@ -142,7 +139,7 @@ describe('Applying updates to a doc', function () {
     })
 
     it('should set the first op timestamp', function (done) {
-      rclient_project_history.get(
+      rclientProjectHistory.get(
         ProjectHistoryKeys.projectHistoryFirstOpTimestamp({
           project_id: this.project_id,
         }),
@@ -179,7 +176,7 @@ describe('Applying updates to a doc', function () {
       })
 
       return it('should not change the first op timestamp', function (done) {
-        rclient_project_history.get(
+        rclientProjectHistory.get(
           ProjectHistoryKeys.projectHistoryFirstOpTimestamp({
             project_id: this.project_id,
           }),
@@ -250,14 +247,14 @@ describe('Applying updates to a doc', function () {
     })
 
     it('should push the applied updates to the track changes api', function (done) {
-      rclient_history.lrange(
+      rclientHistory.lrange(
         HistoryKeys.uncompressedHistoryOps({ doc_id: this.doc_id }),
         0,
         -1,
         (error, updates) => {
           if (error) return done(error)
           JSON.parse(updates[0]).op.should.deep.equal(this.update.op)
-          return rclient_history.sismember(
+          return rclientHistory.sismember(
             HistoryKeys.docsWithHistoryOps({ project_id: this.project_id }),
             this.doc_id,
             (error, result) => {
@@ -272,7 +269,7 @@ describe('Applying updates to a doc', function () {
     })
 
     return it('should push the applied updates to the project history changes api', function (done) {
-      rclient_project_history.lrange(
+      rclientProjectHistory.lrange(
         ProjectHistoryKeys.projectHistoryOps({ project_id: this.project_id }),
         0,
         -1,
@@ -336,7 +333,7 @@ describe('Applying updates to a doc', function () {
     })
 
     it('should not push any applied updates to the track changes api', function (done) {
-      rclient_history.lrange(
+      rclientHistory.lrange(
         HistoryKeys.uncompressedHistoryOps({ doc_id: this.doc_id }),
         0,
         -1,
@@ -350,7 +347,7 @@ describe('Applying updates to a doc', function () {
     })
 
     return it('should push the applied updates to the project history changes api', function (done) {
-      rclient_project_history.lrange(
+      rclientProjectHistory.lrange(
         ProjectHistoryKeys.projectHistoryOps({ project_id: this.project_id }),
         0,
         -1,
@@ -442,7 +439,7 @@ describe('Applying updates to a doc', function () {
       })
 
       it('should push the applied updates to the track changes api', function (done) {
-        rclient_history.lrange(
+        rclientHistory.lrange(
           HistoryKeys.uncompressedHistoryOps({ doc_id: this.doc_id }),
           0,
           -1,
@@ -454,7 +451,7 @@ describe('Applying updates to a doc', function () {
               appliedUpdate.op.should.deep.equal(updates[i].op)
             }
 
-            return rclient_history.sismember(
+            return rclientHistory.sismember(
               HistoryKeys.docsWithHistoryOps({ project_id: this.project_id }),
               this.doc_id,
               (error, result) => {
@@ -469,7 +466,7 @@ describe('Applying updates to a doc', function () {
       })
 
       return it('should store the doc ops in the correct order', function (done) {
-        rclient_du.lrange(
+        rclientDU.lrange(
           Keys.docOps({ doc_id: this.doc_id }),
           0,
           -1,
diff --git a/services/document-updater/test/acceptance/js/DeletingAProjectTests.js b/services/document-updater/test/acceptance/js/DeletingAProjectTests.js
index 0ca9700544..565c224f94 100644
--- a/services/document-updater/test/acceptance/js/DeletingAProjectTests.js
+++ b/services/document-updater/test/acceptance/js/DeletingAProjectTests.js
@@ -1,6 +1,3 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 /*
@@ -21,14 +18,14 @@ const DocUpdaterApp = require('./helpers/DocUpdaterApp')
 
 describe('Deleting a project', function () {
   before(function (done) {
-    let doc_id0, doc_id1
+    let docId0, docId1
     this.project_id = DocUpdaterClient.randomId()
     this.docs = [
       {
-        id: (doc_id0 = DocUpdaterClient.randomId()),
+        id: (docId0 = DocUpdaterClient.randomId()),
         lines: ['one', 'two', 'three'],
         update: {
-          doc: doc_id0,
+          doc: docId0,
           op: [
             {
               i: 'one and a half\n',
@@ -40,10 +37,10 @@ describe('Deleting a project', function () {
         updatedLines: ['one', 'one and a half', 'two', 'three'],
       },
       {
-        id: (doc_id1 = DocUpdaterClient.randomId()),
+        id: (docId1 = DocUpdaterClient.randomId()),
         lines: ['four', 'five', 'six'],
         update: {
-          doc: doc_id1,
+          doc: docId1,
           op: [
             {
               i: 'four and a half\n',
diff --git a/services/document-updater/test/acceptance/js/FlushingAProjectTests.js b/services/document-updater/test/acceptance/js/FlushingAProjectTests.js
index ed6f25e805..3f600040dc 100644
--- a/services/document-updater/test/acceptance/js/FlushingAProjectTests.js
+++ b/services/document-updater/test/acceptance/js/FlushingAProjectTests.js
@@ -1,6 +1,3 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 /*
@@ -19,14 +16,14 @@ const DocUpdaterApp = require('./helpers/DocUpdaterApp')
 
 describe('Flushing a project', function () {
   before(function (done) {
-    let doc_id0, doc_id1
+    let docId0, docId1
     this.project_id = DocUpdaterClient.randomId()
     this.docs = [
       {
-        id: (doc_id0 = DocUpdaterClient.randomId()),
+        id: (docId0 = DocUpdaterClient.randomId()),
         lines: ['one', 'two', 'three'],
         update: {
-          doc: doc_id0,
+          doc: docId0,
           op: [
             {
               i: 'one and a half\n',
@@ -38,10 +35,10 @@ describe('Flushing a project', function () {
         updatedLines: ['one', 'one and a half', 'two', 'three'],
       },
       {
-        id: (doc_id1 = DocUpdaterClient.randomId()),
+        id: (docId1 = DocUpdaterClient.randomId()),
         lines: ['four', 'five', 'six'],
         update: {
-          doc: doc_id1,
+          doc: docId1,
           op: [
             {
               i: 'four and a half\n',
diff --git a/services/document-updater/test/acceptance/js/FlushingDocsTests.js b/services/document-updater/test/acceptance/js/FlushingDocsTests.js
index 128de957ec..d6c5d85611 100644
--- a/services/document-updater/test/acceptance/js/FlushingDocsTests.js
+++ b/services/document-updater/test/acceptance/js/FlushingDocsTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -122,8 +121,8 @@ describe('Flushing a doc to Mongo', function () {
         .stub(MockWebApi, 'setDocument')
         .callsFake(
           (
-            project_id,
-            doc_id,
+            projectId,
+            docId,
             lines,
             version,
             ranges,
diff --git a/services/document-updater/test/acceptance/js/GettingADocumentTests.js b/services/document-updater/test/acceptance/js/GettingADocumentTests.js
index 4d8a231b39..65298932d9 100644
--- a/services/document-updater/test/acceptance/js/GettingADocumentTests.js
+++ b/services/document-updater/test/acceptance/js/GettingADocumentTests.js
@@ -1,6 +1,3 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 /*
@@ -220,7 +217,7 @@ describe('Getting a document', function () {
       ])
       sinon
         .stub(MockWebApi, 'getDocument')
-        .callsFake((project_id, doc_id, callback) => {
+        .callsFake((projectId, docId, callback) => {
           if (callback == null) {
             callback = function () {}
           }
@@ -255,7 +252,7 @@ describe('Getting a document', function () {
       ])
       sinon
         .stub(MockWebApi, 'getDocument')
-        .callsFake((project_id, doc_id, callback) => {
+        .callsFake((projectId, docId, callback) => {
           if (callback == null) {
             callback = function () {}
           }
diff --git a/services/document-updater/test/acceptance/js/helpers/MockProjectHistoryApi.js b/services/document-updater/test/acceptance/js/helpers/MockProjectHistoryApi.js
index 6f75192f4f..f588d5c4ec 100644
--- a/services/document-updater/test/acceptance/js/helpers/MockProjectHistoryApi.js
+++ b/services/document-updater/test/acceptance/js/helpers/MockProjectHistoryApi.js
@@ -1,6 +1,3 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 /*
@@ -14,7 +11,7 @@ const express = require('express')
 const app = express()
 
 module.exports = MockProjectHistoryApi = {
-  flushProject(doc_id, callback) {
+  flushProject(docId, callback) {
     if (callback == null) {
       callback = function () {}
     }
diff --git a/services/document-updater/test/acceptance/js/helpers/MockTrackChangesApi.js b/services/document-updater/test/acceptance/js/helpers/MockTrackChangesApi.js
index baa8f10d60..8d19af0415 100644
--- a/services/document-updater/test/acceptance/js/helpers/MockTrackChangesApi.js
+++ b/services/document-updater/test/acceptance/js/helpers/MockTrackChangesApi.js
@@ -1,6 +1,3 @@
-/* eslint-disable
-    camelcase,
-*/
 // TODO: This file was created by bulk-decaffeinate.
 // Fix any style issues and re-enable lint.
 /*
@@ -14,7 +11,7 @@ const express = require('express')
 const app = express()
 
 module.exports = MockTrackChangesApi = {
-  flushDoc(doc_id, callback) {
+  flushDoc(docId, callback) {
     if (callback == null) {
       callback = function () {}
     }
diff --git a/services/document-updater/test/acceptance/js/helpers/MockWebApi.js b/services/document-updater/test/acceptance/js/helpers/MockWebApi.js
index f687e48e18..5bc3910c7b 100644
--- a/services/document-updater/test/acceptance/js/helpers/MockWebApi.js
+++ b/services/document-updater/test/acceptance/js/helpers/MockWebApi.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -23,7 +22,7 @@ module.exports = MockWebApi = {
     return (this.docs = {})
   },
 
-  insertDoc(project_id, doc_id, doc) {
+  insertDoc(projectId, docId, doc) {
     if (doc.version == null) {
       doc.version = 0
     }
@@ -31,12 +30,12 @@ module.exports = MockWebApi = {
       doc.lines = []
     }
     doc.pathname = '/a/b/c.tex'
-    return (this.docs[`${project_id}:${doc_id}`] = doc)
+    return (this.docs[`${projectId}:${docId}`] = doc)
   },
 
   setDocument(
-    project_id,
-    doc_id,
+    projectId,
+    docId,
     lines,
     version,
     ranges,
@@ -48,8 +47,8 @@ module.exports = MockWebApi = {
       callback = function () {}
     }
     const doc =
-      this.docs[`${project_id}:${doc_id}`] ||
-      (this.docs[`${project_id}:${doc_id}`] = {})
+      this.docs[`${projectId}:${docId}`] ||
+      (this.docs[`${projectId}:${docId}`] = {})
     doc.lines = lines
     doc.version = version
     doc.ranges = ranges
@@ -59,11 +58,11 @@ module.exports = MockWebApi = {
     return callback(null)
   },
 
-  getDocument(project_id, doc_id, callback) {
+  getDocument(projectId, docId, callback) {
     if (callback == null) {
       callback = function () {}
     }
-    return callback(null, this.docs[`${project_id}:${doc_id}`])
+    return callback(null, this.docs[`${projectId}:${docId}`])
   },
 
   run() {
diff --git a/services/document-updater/test/stress/js/run.js b/services/document-updater/test/stress/js/run.js
index da0306943e..e3850da46e 100644
--- a/services/document-updater/test/stress/js/run.js
+++ b/services/document-updater/test/stress/js/run.js
@@ -1,7 +1,5 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
-    no-undef,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -149,16 +147,16 @@ class StressTestClient {
     } else {
       assert(update.op.op.length === 1)
       this.counts.remote_updates++
-      let external_op = update.op.op[0]
+      let externalOp = update.op.op[0]
       if (this.inflight_op != null) {
         this.counts.conflicts++
-        this.inflight_op = transform(this.inflight_op, external_op)
-        external_op = transform(external_op, this.inflight_op)
+        this.inflight_op = transform(this.inflight_op, externalOp)
+        externalOp = transform(externalOp, this.inflight_op)
       }
-      if (external_op.p < this.pos) {
-        this.pos += external_op.i.length
+      if (externalOp.p < this.pos) {
+        this.pos += externalOp.i.length
       }
-      return (this.content = insert(this.content, external_op.p, external_op.i))
+      return (this.content = insert(this.content, externalOp.p, externalOp.i))
     }
   }
 
@@ -198,7 +196,7 @@ class StressTestClient {
             `[${new Date()}] \t[${this.client_id.slice(
               0,
               4
-            )}] ERROR: Invalid response from get doc (${doc_id})`,
+            )}] ERROR: Invalid response from get doc (${this.doc_id})`,
             body
           )
         }
@@ -272,7 +270,7 @@ class StressTestClient {
   }
 }
 
-const checkDocument = function (project_id, doc_id, clients, callback) {
+const checkDocument = function (projectId, docId, clients, callback) {
   if (callback == null) {
     callback = function () {}
   }
@@ -280,11 +278,11 @@ const checkDocument = function (project_id, doc_id, clients, callback) {
   return async.parallel(jobs, callback)
 }
 
-const printSummary = function (doc_id, clients) {
+const printSummary = function (docId, clients) {
   const slot = require('cluster-key-slot')
   const now = new Date()
   console.log(
-    `[${now}] [${doc_id.slice(0, 4)} (slot: ${slot(doc_id)})] ${
+    `[${now}] [${docId.slice(0, 4)} (slot: ${slot(docId)})] ${
       clients.length
     } clients...`
   )
@@ -315,13 +313,13 @@ const CLIENT_COUNT = parseInt(process.argv[2], 10)
 const UPDATE_DELAY = parseInt(process.argv[3], 10)
 const SAMPLE_INTERVAL = parseInt(process.argv[4], 10)
 
-for (const doc_and_project_id of Array.from(process.argv.slice(5))) {
-  ;(function (doc_and_project_id) {
-    const [project_id, doc_id] = Array.from(doc_and_project_id.split(':'))
-    console.log({ project_id, doc_id })
+for (const docAndProjectId of Array.from(process.argv.slice(5))) {
+  ;(function (docAndProjectId) {
+    const [projectId, docId] = Array.from(docAndProjectId.split(':'))
+    console.log({ projectId, docId })
     return DocUpdaterClient.setDocLines(
-      project_id,
-      doc_id,
+      projectId,
+      docId,
       [new Array(CLIENT_COUNT + 2).join('a')],
       null,
       null,
@@ -329,63 +327,59 @@ for (const doc_and_project_id of Array.from(process.argv.slice(5))) {
         if (error != null) {
           throw error
         }
-        return DocUpdaterClient.getDoc(
-          project_id,
-          doc_id,
-          (error, res, body) => {
-            let runBatch
-            if (error != null) {
-              throw error
-            }
-            if (body.lines == null) {
-              return console.error(
-                `[${new Date()}] ERROR: Invalid response from get doc (${doc_id})`,
-                body
-              )
-            }
-            const content = body.lines.join('\n')
-            const { version } = body
+        return DocUpdaterClient.getDoc(projectId, docId, (error, res, body) => {
+          let runBatch
+          if (error != null) {
+            throw error
+          }
+          if (body.lines == null) {
+            return console.error(
+              `[${new Date()}] ERROR: Invalid response from get doc (${docId})`,
+              body
+            )
+          }
+          const content = body.lines.join('\n')
+          const { version } = body
 
-            const clients = []
-            for (
-              let pos = 1, end = CLIENT_COUNT, asc = end >= 1;
-              asc ? pos <= end : pos >= end;
-              asc ? pos++ : pos--
-            ) {
-              ;(function (pos) {
-                const client = new StressTestClient({
-                  doc_id,
-                  project_id,
-                  content,
-                  pos,
-                  version,
-                  updateDelay: UPDATE_DELAY,
-                })
-                return clients.push(client)
-              })(pos)
-            }
+          const clients = []
+          for (
+            let pos = 1, end = CLIENT_COUNT, asc = end >= 1;
+            asc ? pos <= end : pos >= end;
+            asc ? pos++ : pos--
+          ) {
+            ;(function (pos) {
+              const client = new StressTestClient({
+                doc_id: docId,
+                project_id: projectId,
+                content,
+                pos,
+                version,
+                updateDelay: UPDATE_DELAY,
+              })
+              return clients.push(client)
+            })(pos)
+          }
 
-            return (runBatch = function () {
-              const jobs = clients.map(
-                client => cb =>
-                  client.runForNUpdates(SAMPLE_INTERVAL / UPDATE_DELAY, cb)
-              )
-              return async.parallel(jobs, error => {
+          return (runBatch = function () {
+            const jobs = clients.map(
+              client => cb =>
+                client.runForNUpdates(SAMPLE_INTERVAL / UPDATE_DELAY, cb)
+            )
+            return async.parallel(jobs, error => {
+              if (error != null) {
+                throw error
+              }
+              printSummary(docId, clients)
+              return checkDocument(projectId, docId, clients, error => {
                 if (error != null) {
                   throw error
                 }
-                printSummary(doc_id, clients)
-                return checkDocument(project_id, doc_id, clients, error => {
-                  if (error != null) {
-                    throw error
-                  }
-                  return runBatch()
-                })
+                return runBatch()
               })
-            })()
-          }
-        )
+            })
+          })()
+        })
       }
     )
-  })(doc_and_project_id)
+  })(docAndProjectId)
 }
diff --git a/services/document-updater/test/unit/js/HistoryRedisManager/HistoryRedisManagerTests.js b/services/document-updater/test/unit/js/HistoryRedisManager/HistoryRedisManagerTests.js
index 009fdf50c3..3c4723701c 100644
--- a/services/document-updater/test/unit/js/HistoryRedisManager/HistoryRedisManagerTests.js
+++ b/services/document-updater/test/unit/js/HistoryRedisManager/HistoryRedisManagerTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -30,11 +29,11 @@ describe('HistoryRedisManager', function () {
           redis: {
             history: (this.settings = {
               key_schema: {
-                uncompressedHistoryOps({ doc_id }) {
-                  return `UncompressedHistoryOps:${doc_id}`
+                uncompressedHistoryOps({ doc_id: docId }) {
+                  return `UncompressedHistoryOps:${docId}`
                 },
-                docsWithHistoryOps({ project_id }) {
-                  return `DocsWithHistoryOps:${project_id}`
+                docsWithHistoryOps({ project_id: projectId }) {
+                  return `DocsWithHistoryOps:${projectId}`
                 },
               },
             }),
diff --git a/services/document-updater/test/unit/js/LockManager/CheckingTheLock.js b/services/document-updater/test/unit/js/LockManager/CheckingTheLock.js
index c21a2a1b4e..1de15f5878 100644
--- a/services/document-updater/test/unit/js/LockManager/CheckingTheLock.js
+++ b/services/document-updater/test/unit/js/LockManager/CheckingTheLock.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-unused-vars,
 */
 // TODO: This file was created by bulk-decaffeinate.
@@ -14,9 +13,9 @@ const sinon = require('sinon')
 const assert = require('assert')
 const path = require('path')
 const modulePath = path.join(__dirname, '../../../../app/js/LockManager.js')
-const project_id = 1234
-const doc_id = 5678
-const blockingKey = `Blocking:${doc_id}`
+const projectId = 1234
+const docId = 5678
+const blockingKey = `Blocking:${docId}`
 const SandboxedModule = require('sandboxed-module')
 
 describe('LockManager - checking the lock', function () {
@@ -48,7 +47,7 @@ describe('LockManager - checking the lock', function () {
 
   it('should return true if the key does not exists', function (done) {
     existsStub.yields(null, '0')
-    return LockManager.checkLock(doc_id, (err, free) => {
+    return LockManager.checkLock(docId, (err, free) => {
       if (err) return done(err)
       free.should.equal(true)
       return done()
@@ -57,7 +56,7 @@ describe('LockManager - checking the lock', function () {
 
   return it('should return false if the key does exists', function (done) {
     existsStub.yields(null, '1')
-    return LockManager.checkLock(doc_id, (err, free) => {
+    return LockManager.checkLock(docId, (err, free) => {
       if (err) return done(err)
       free.should.equal(false)
       return done()
diff --git a/services/document-updater/test/unit/js/LockManager/ReleasingTheLock.js b/services/document-updater/test/unit/js/LockManager/ReleasingTheLock.js
index 47ad907a6b..8d253d8899 100644
--- a/services/document-updater/test/unit/js/LockManager/ReleasingTheLock.js
+++ b/services/document-updater/test/unit/js/LockManager/ReleasingTheLock.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -15,8 +14,8 @@ const sinon = require('sinon')
 const assert = require('assert')
 const path = require('path')
 const modulePath = path.join(__dirname, '../../../../app/js/LockManager.js')
-const project_id = 1234
-const doc_id = 5678
+const projectId = 1234
+const docId = 5678
 const SandboxedModule = require('sandboxed-module')
 
 describe('LockManager - releasing the lock', function () {
@@ -34,8 +33,8 @@ describe('LockManager - releasing the lock', function () {
         redis: {
           lock: {
             key_schema: {
-              blockingKey({ doc_id }) {
-                return `Blocking:${doc_id}`
+              blockingKey({ doc_id: docId }) {
+                return `Blocking:${docId}`
               },
             },
           },
@@ -61,7 +60,7 @@ describe('LockManager - releasing the lock', function () {
   describe('when the lock is current', function () {
     beforeEach(function () {
       this.client.eval = sinon.stub().yields(null, 1)
-      return this.LockManager.releaseLock(doc_id, this.lockValue, this.callback)
+      return this.LockManager.releaseLock(docId, this.lockValue, this.callback)
     })
 
     it('should clear the data from redis', function () {
@@ -69,7 +68,7 @@ describe('LockManager - releasing the lock', function () {
         .calledWith(
           this.LockManager.unlockScript,
           1,
-          `Blocking:${doc_id}`,
+          `Blocking:${docId}`,
           this.lockValue
         )
         .should.equal(true)
@@ -83,7 +82,7 @@ describe('LockManager - releasing the lock', function () {
   return describe('when the lock has expired', function () {
     beforeEach(function () {
       this.client.eval = sinon.stub().yields(null, 0)
-      return this.LockManager.releaseLock(doc_id, this.lockValue, this.callback)
+      return this.LockManager.releaseLock(docId, this.lockValue, this.callback)
     })
 
     return it('should return an error if the lock has expired', function () {
diff --git a/services/document-updater/test/unit/js/LockManager/getLockTests.js b/services/document-updater/test/unit/js/LockManager/getLockTests.js
index 60537dddfe..ec7d2a7884 100644
--- a/services/document-updater/test/unit/js/LockManager/getLockTests.js
+++ b/services/document-updater/test/unit/js/LockManager/getLockTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -75,7 +74,7 @@ describe('LockManager - getting the lock', function () {
       const startTime = Date.now()
       let tries = 0
       this.LockManager.LOCK_TEST_INTERVAL = 5
-      this.LockManager.tryLock = (doc_id, callback) => {
+      this.LockManager.tryLock = (docId, callback) => {
         if (callback == null) {
           callback = function () {}
         }
diff --git a/services/document-updater/test/unit/js/LockManager/tryLockTests.js b/services/document-updater/test/unit/js/LockManager/tryLockTests.js
index 9a0c521d2b..2644da8d86 100644
--- a/services/document-updater/test/unit/js/LockManager/tryLockTests.js
+++ b/services/document-updater/test/unit/js/LockManager/tryLockTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -34,8 +33,8 @@ describe('LockManager - trying the lock', function () {
           redis: {
             lock: {
               key_schema: {
-                blockingKey({ doc_id }) {
-                  return `Blocking:${doc_id}`
+                blockingKey({ doc_id: docId }) {
+                  return `Blocking:${docId}`
                 },
               },
             },
diff --git a/services/document-updater/test/unit/js/ProjectManager/flushAndDeleteProjectTests.js b/services/document-updater/test/unit/js/ProjectManager/flushAndDeleteProjectTests.js
index da4013a534..a4c9f770db 100644
--- a/services/document-updater/test/unit/js/ProjectManager/flushAndDeleteProjectTests.js
+++ b/services/document-updater/test/unit/js/ProjectManager/flushAndDeleteProjectTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -68,9 +67,9 @@ describe('ProjectManager - flushAndDeleteProject', function () {
     })
 
     it('should delete each doc in the project', function () {
-      return Array.from(this.doc_ids).map(doc_id =>
+      return Array.from(this.doc_ids).map(docId =>
         this.DocumentManager.flushAndDeleteDocWithLock
-          .calledWith(this.project_id, doc_id, {})
+          .calledWith(this.project_id, docId, {})
           .should.equal(true)
       )
     })
@@ -97,8 +96,8 @@ describe('ProjectManager - flushAndDeleteProject', function () {
         .stub()
         .callsArgWith(1, null, this.doc_ids)
       this.DocumentManager.flushAndDeleteDocWithLock = sinon.spy(
-        (project_id, doc_id, options, callback) => {
-          if (doc_id === 'doc-id-1') {
+        (projectId, docId, options, callback) => {
+          if (docId === 'doc-id-1') {
             return callback(
               (this.error = new Error('oops, something went wrong'))
             )
@@ -118,9 +117,9 @@ describe('ProjectManager - flushAndDeleteProject', function () {
     })
 
     it('should still flush each doc in the project', function () {
-      return Array.from(this.doc_ids).map(doc_id =>
+      return Array.from(this.doc_ids).map(docId =>
         this.DocumentManager.flushAndDeleteDocWithLock
-          .calledWith(this.project_id, doc_id, {})
+          .calledWith(this.project_id, docId, {})
           .should.equal(true)
       )
     })
diff --git a/services/document-updater/test/unit/js/ProjectManager/flushProjectTests.js b/services/document-updater/test/unit/js/ProjectManager/flushProjectTests.js
index e01f5a0679..9be5aabd9a 100644
--- a/services/document-updater/test/unit/js/ProjectManager/flushProjectTests.js
+++ b/services/document-updater/test/unit/js/ProjectManager/flushProjectTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -66,9 +65,9 @@ describe('ProjectManager - flushProject', function () {
     })
 
     it('should flush each doc in the project', function () {
-      return Array.from(this.doc_ids).map(doc_id =>
+      return Array.from(this.doc_ids).map(docId =>
         this.DocumentManager.flushDocIfLoadedWithLock
-          .calledWith(this.project_id, doc_id)
+          .calledWith(this.project_id, docId)
           .should.equal(true)
       )
     })
@@ -89,11 +88,11 @@ describe('ProjectManager - flushProject', function () {
         .stub()
         .callsArgWith(1, null, this.doc_ids)
       this.DocumentManager.flushDocIfLoadedWithLock = sinon.spy(
-        (project_id, doc_id, callback) => {
+        (projectId, docId, callback) => {
           if (callback == null) {
             callback = function () {}
           }
-          if (doc_id === 'doc-id-1') {
+          if (docId === 'doc-id-1') {
             return callback(
               (this.error = new Error('oops, something went wrong'))
             )
@@ -112,9 +111,9 @@ describe('ProjectManager - flushProject', function () {
     })
 
     it('should still flush each doc in the project', function () {
-      return Array.from(this.doc_ids).map(doc_id =>
+      return Array.from(this.doc_ids).map(docId =>
         this.DocumentManager.flushDocIfLoadedWithLock
-          .calledWith(this.project_id, doc_id)
+          .calledWith(this.project_id, docId)
           .should.equal(true)
       )
     })
diff --git a/services/document-updater/test/unit/js/RangesManager/RangesManagerTests.js b/services/document-updater/test/unit/js/RangesManager/RangesManagerTests.js
index 9b3dbdfffb..eb29b1991d 100644
--- a/services/document-updater/test/unit/js/RangesManager/RangesManagerTests.js
+++ b/services/document-updater/test/unit/js/RangesManager/RangesManagerTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -84,11 +83,11 @@ describe('RangesManager', function () {
 
       return it('should return the modified the comments and changes', function () {
         this.callback.called.should.equal(true)
-        const [error, entries, ranges_were_collapsed] = Array.from(
+        const [error, entries, rangesWereCollapsed] = Array.from(
           this.callback.args[0]
         )
         expect(error).to.be.null
-        expect(ranges_were_collapsed).to.equal(false)
+        expect(rangesWereCollapsed).to.equal(false)
         entries.comments[0].op.should.deep.equal({
           c: 'three ',
           p: 8,
@@ -347,10 +346,10 @@ describe('RangesManager', function () {
 
       return it('should return ranges_were_collapsed == true', function () {
         this.callback.called.should.equal(true)
-        const [error, entries, ranges_were_collapsed] = Array.from(
+        const [error, entries, rangesWereCollapsed] = Array.from(
           this.callback.args[0]
         )
-        return expect(ranges_were_collapsed).to.equal(true)
+        return expect(rangesWereCollapsed).to.equal(true)
       })
     })
 
@@ -411,10 +410,10 @@ describe('RangesManager', function () {
 
       return it('should return ranges_were_collapsed == true', function () {
         this.callback.called.should.equal(true)
-        const [error, entries, ranges_were_collapsed] = Array.from(
+        const [error, entries, rangesWereCollapsed] = Array.from(
           this.callback.args[0]
         )
-        return expect(ranges_were_collapsed).to.equal(true)
+        return expect(rangesWereCollapsed).to.equal(true)
       })
     })
   })
diff --git a/services/document-updater/test/unit/js/RealTimeRedisManager/RealTimeRedisManagerTests.js b/services/document-updater/test/unit/js/RealTimeRedisManager/RealTimeRedisManagerTests.js
index b0672bc088..577f6fab25 100644
--- a/services/document-updater/test/unit/js/RealTimeRedisManager/RealTimeRedisManagerTests.js
+++ b/services/document-updater/test/unit/js/RealTimeRedisManager/RealTimeRedisManagerTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     no-return-assign,
     no-unused-vars,
 */
@@ -33,8 +32,8 @@ describe('RealTimeRedisManager', function () {
           redis: {
             documentupdater: (this.settings = {
               key_schema: {
-                pendingUpdates({ doc_id }) {
-                  return `PendingUpdates:${doc_id}`
+                pendingUpdates({ doc_id: docId }) {
+                  return `PendingUpdates:${docId}`
                 },
               },
             }),
diff --git a/services/document-updater/test/unit/js/ShareJS/TextTransformTests.js b/services/document-updater/test/unit/js/ShareJS/TextTransformTests.js
index f4e41573da..a4fe5d7376 100644
--- a/services/document-updater/test/unit/js/ShareJS/TextTransformTests.js
+++ b/services/document-updater/test/unit/js/ShareJS/TextTransformTests.js
@@ -1,5 +1,4 @@
 /* eslint-disable
-    camelcase,
     mocha/no-identical-title,
     no-return-assign,
 */
@@ -381,28 +380,35 @@ describe('ShareJS text type', function () {
             (() => {
               const result1 = []
               for (const op2 of Array.from(OPS)) {
-                const op1_t = transform(op1, op2, 'left')
-                const op2_t = transform(op2, op1, 'right')
+                const op1T = transform(op1, op2, 'left')
+                const op2T = transform(op2, op1, 'right')
 
                 const rt12 = new RangesTracker()
                 const snapshot12 = applySnapshot(
                   applySnapshot(SNAPSHOT, [op1]),
-                  op2_t
+                  op2T
                 )
                 applyRanges(rt12, [op1])
-                applyRanges(rt12, op2_t)
+                applyRanges(rt12, op2T)
 
                 const rt21 = new RangesTracker()
                 const snapshot21 = applySnapshot(
                   applySnapshot(SNAPSHOT, [op2]),
-                  op1_t
+                  op1T
                 )
                 applyRanges(rt21, [op2])
-                applyRanges(rt21, op1_t)
+                applyRanges(rt21, op1T)
 
                 if (snapshot12 !== snapshot21) {
                   console.error(
-                    { op1, op2, op1_t, op2_t, snapshot12, snapshot21 },
+                    {
+                      op1,
+                      op2,
+                      op1T,
+                      op2T,
+                      snapshot12,
+                      snapshot21,
+                    },
                     'Ops are not consistent'
                   )
                   throw new Error('OT is inconsistent')
@@ -415,8 +421,8 @@ describe('ShareJS text type', function () {
                     {
                       op1,
                       op2,
-                      op1_t,
-                      op2_t,
+                      op1T,
+                      op2T,
                       rt12_comments: rt12.comments,
                       rt21_comments: rt21.comments,
                     },