4 files changed, 35 insertions, 17 deletions
diff --git a/lib/web/imageRouter/azure.js b/lib/web/imageRouter/azure.js
index 22ee5585..c56ac860 100644
--- a/lib/web/imageRouter/azure.js
+++ b/lib/web/imageRouter/azure.js
@@ -17,7 +17,7 @@ exports.uploadImage = function (imagePath, callback) {
     return
   }
 
-  var azureBlobService = azure.createBlobService(config.azure.connectionString)
+  const azureBlobService = azure.createBlobService(config.azure.connectionString)
 
   azureBlobService.createContainerIfNotExists(config.azure.container, { publicAccessLevel: 'blob' }, function (err, result, response) {
     if (err) {
diff --git a/lib/web/imageRouter/index.js b/lib/web/imageRouter/index.js
index afa9bbf6..0a72c65c 100644
--- a/lib/web/imageRouter/index.js
+++ b/lib/web/imageRouter/index.js
@@ -12,20 +12,28 @@ const config = require('../../config')
 const logger = require('../../logger')
 const errors = require('../../errors')
 
-const imageRouter = module.exports = Router()
+const imageRouter = (module.exports = Router())
 
 async function checkUploadType (filePath) {
   const typeFromMagic = await FileType.fromFile(filePath)
   if (typeFromMagic === undefined) {
-    logger.error(`Image upload error: Could not determine MIME-type`)
+    logger.error('Image upload error: Could not determine MIME-type')
     return false
   }
   if (path.extname(filePath) !== '.' + typeFromMagic.ext) {
-    logger.error(`Image upload error: Provided file extension does not match MIME-type`)
+    logger.error(
+      'Image upload error: Provided file extension does not match MIME-type'
+    )
     return false
   }
   if (!config.allowedUploadMimeTypes.includes(typeFromMagic.mime)) {
-    logger.error(`Image upload error: MIME-type "${typeFromMagic.mime}" of uploaded file not allowed, only "${config.allowedUploadMimeTypes.join(', ')}" are allowed`)
+    logger.error(
+      `Image upload error: MIME-type "${
+        typeFromMagic.mime
+      }" of uploaded file not allowed, only "${config.allowedUploadMimeTypes.join(
+        ', '
+      )}" are allowed`
+    )
     return false
   }
   return true
@@ -33,12 +41,18 @@ async function checkUploadType (filePath) {
 
 // upload image
 imageRouter.post('/uploadimage', function (req, res) {
-  if (!req.isAuthenticated() && !config.allowAnonymous && !config.allowAnonymousEdits) {
-    logger.error(`Image upload error: Anonymous edits and therefore uploads are not allowed)`)
+  if (
+    !req.isAuthenticated() &&
+    !config.allowAnonymous &&
+    !config.allowAnonymousEdits
+  ) {
+    logger.error(
+      'Image upload error: Anonymous edits and therefore uploads are not allowed'
+    )
     return errors.errorForbidden(res)
   }
 
-  var form = new formidable.IncomingForm()
+  const form = new formidable.IncomingForm()
   form.keepExtensions = true
   const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'hedgedoc-'))
   form.uploadDir = tmpDir
@@ -49,17 +63,21 @@ imageRouter.post('/uploadimage', function (req, res) {
       rimraf(tmpDir)
       return errors.errorForbidden(res)
     } else if (!files.image || !files.image.path) {
-      logger.error(`Image upload error: Upload didn't contain file)`)
+      logger.error("Image upload error: Upload didn't contain file)")
       rimraf.sync(tmpDir)
       return errors.errorBadRequest(res)
-    } else if (!await checkUploadType(files.image.path)) {
+    } else if (!(await checkUploadType(files.image.path))) {
       rimraf.sync(tmpDir)
       return errors.errorBadRequest(res)
     } else {
-      logger.debug(`SERVER received uploadimage: ${JSON.stringify(files.image)}`)
+      logger.debug(
+        `SERVER received uploadimage: ${JSON.stringify(files.image)}`
+      )
 
       const uploadProvider = require('./' + config.imageUploadType)
-      logger.debug(`imageRouter: Uploading ${files.image.path} using ${config.imageUploadType}`)
+      logger.debug(
+        `imageRouter: Uploading ${files.image.path} using ${config.imageUploadType}`
+      )
       uploadProvider.uploadImage(files.image.path, function (err, url) {
         rimraf.sync(tmpDir)
         if (err !== null) {
diff --git a/lib/web/imageRouter/minio.js b/lib/web/imageRouter/minio.js
index 91de5ff1..3ced94e2 100644
--- a/lib/web/imageRouter/minio.js
+++ b/lib/web/imageRouter/minio.js
@@ -32,16 +32,16 @@ exports.uploadImage = function (imagePath, callback) {
       return
     }
 
-    let key = path.join('uploads', path.basename(imagePath))
-    let protocol = config.minio.secure ? 'https' : 'http'
+    const key = path.join('uploads', path.basename(imagePath))
+    const protocol = config.minio.secure ? 'https' : 'http'
 
     minioClient.putObject(config.s3bucket, key, buffer, buffer.size, getImageMimeType(imagePath), function (err, data) {
       if (err) {
         callback(new Error(err), null)
         return
       }
-      let hidePort = [80, 443].includes(config.minio.port)
-      let urlPort = hidePort ? '' : `:${config.minio.port}`
+      const hidePort = [80, 443].includes(config.minio.port)
+      const urlPort = hidePort ? '' : `:${config.minio.port}`
       callback(null, `${protocol}://${config.minio.endPoint}${urlPort}/${config.s3bucket}/${key}`)
     })
   })
diff --git a/lib/web/imageRouter/s3.js b/lib/web/imageRouter/s3.js
index 2bf08cc7..5bb8e160 100644
--- a/lib/web/imageRouter/s3.js
+++ b/lib/web/imageRouter/s3.js
@@ -26,7 +26,7 @@ exports.uploadImage = function (imagePath, callback) {
       callback(new Error(err), null)
       return
     }
-    let params = {
+    const params = {
       Bucket: config.s3bucket,
       Key: path.join('uploads', path.basename(imagePath)),
       Body: buffer