decaffeinate: Rename CommandRunner.coffee and 25 other files from .coffee to .js

app/coffee/LockManager.js

@@ -0,0 +1,31 @@
+Settings = require('settings-sharelatex')
+logger = require "logger-sharelatex"
+Lockfile = require('lockfile') # from https://github.com/npm/lockfile
+Errors = require "./Errors"
+fs = require("fs")
+Path = require("path")
+module.exports = LockManager =
+	LOCK_TEST_INTERVAL: 1000 # 50ms between each test of the lock
+	MAX_LOCK_WAIT_TIME: 15000 # 10s maximum time to spend trying to get the lock
+	LOCK_STALE: 5*60*1000 # 5 mins time until lock auto expires
+
+	runWithLock: (path, runner, callback = ((error) ->)) ->
+		lockOpts =
+			wait: @MAX_LOCK_WAIT_TIME
+			pollPeriod: @LOCK_TEST_INTERVAL
+			stale: @LOCK_STALE
+		Lockfile.lock path, lockOpts, (error) ->
+			if error?.code is 'EEXIST'
+				return callback new Errors.AlreadyCompilingError("compile in progress")
+			else if error?
+				fs.lstat path, (statLockErr, statLock)->
+					fs.lstat Path.dirname(path), (statDirErr, statDir)->
+						fs.readdir Path.dirname(path), (readdirErr, readdirDir)->
+							logger.err error:error, path:path, statLock:statLock, statLockErr:statLockErr, statDir:statDir, statDirErr: statDirErr, readdirErr:readdirErr, readdirDir:readdirDir, "unable to get lock"
+							return callback(error)
+			else
+				runner (error1, args...) ->
+					Lockfile.unlock path, (error2) ->
+						error = error1 or error2
+						return callback(error) if error?
+						callback(null, args...)