diff --git a/src/@ionic-native/plugins/file-transfer/index.ts b/src/@ionic-native/plugins/file-transfer/index.ts
index 0530d56d5..e48b41b46 100644
--- a/src/@ionic-native/plugins/file-transfer/index.ts
+++ b/src/@ionic-native/plugins/file-transfer/index.ts
@@ -1,8 +1,13 @@
 import { Injectable } from '@angular/core';
-import { CordovaInstance, Plugin, InstanceCheck, checkAvailability, IonicNativePlugin } from '@ionic-native/core';
+import {
+  checkAvailability,
+  CordovaInstance,
+  InstanceCheck,
+  IonicNativePlugin,
+  Plugin
+} from '@ionic-native/core';
 
 export interface FileUploadOptions {
-
   /**
    * The name of the form element.
    * Defaults to 'file'.
@@ -30,7 +35,7 @@ export interface FileUploadOptions {
   /**
    * A set of optional key/value pairs to pass in the HTTP request.
    */
-  params?: { [s: string]: any; };
+  params?: { [s: string]: any };
 
   /**
    * Whether to upload the data in chunked streaming mode.
@@ -43,12 +48,10 @@ export interface FileUploadOptions {
    * than one value. On iOS, FireOS, and Android, if a header named
    * Content-Type is present, multipart form data will NOT be used.
    */
-  headers?: { [s: string]: any; };
-
+  headers?: { [s: string]: any };
 }
 
 export interface FileUploadResult {
-
   /**
    * The number of bytes sent to the server as part of the upload.
    */
@@ -67,12 +70,10 @@ export interface FileUploadResult {
   /**
    * The HTTP response headers by the server.
    */
-  headers: { [s: string]: any; };
-
+  headers: { [s: string]: any };
 }
 
 export interface FileTransferError {
-
   /**
    * One of the predefined error codes listed below.
    */
@@ -103,7 +104,6 @@ export interface FileTransferError {
    * Either e.getMessage or e.toString.
    */
   exception: string;
-
 }
 
 /**
@@ -179,11 +179,18 @@ export interface FileTransferError {
   plugin: 'cordova-plugin-file-transfer',
   pluginRef: 'FileTransfer',
   repo: 'https://github.com/apache/cordova-plugin-file-transfer',
-  platforms: ['Amazon Fire OS', 'Android', 'Browser', 'iOS', 'Ubuntu', 'Windows', 'Windows Phone']
+  platforms: [
+    'Amazon Fire OS',
+    'Android',
+    'Browser',
+    'iOS',
+    'Ubuntu',
+    'Windows',
+    'Windows Phone'
+  ]
 })
 @Injectable()
 export class FileTransfer extends IonicNativePlugin {
-
   /**
    * Error code rejected from upload with FileTransferError
    * Defined in FileTransferError.
@@ -209,7 +216,6 @@ export class FileTransfer extends IonicNativePlugin {
   create(): FileTransferObject {
     return new FileTransferObject();
   }
-
 }
 
 /**
@@ -223,7 +229,13 @@ export class FileTransferObject {
   private _objectInstance: any;
 
   constructor() {
-    if (checkAvailability(FileTransfer.getPluginRef(), null, FileTransfer.getPluginName()) === true) {
+    if (
+      checkAvailability(
+        FileTransfer.getPluginRef(),
+        null,
+        FileTransfer.getPluginName()
+      ) === true
+    ) {
       this._objectInstance = new (FileTransfer.getPlugin())();
     }
   }
@@ -233,34 +245,48 @@ export class FileTransferObject {
    *
    * @param {string} fileUrl  Filesystem URL representing the file on the device or a data URI. For backwards compatibility, this can also be the full path of the file on the device.
    * @param {string} url  URL of the server to receive the file, as encoded by encodeURI().
-   * @param {FileUploadOptions} options  Optional parameters.
-   * @param {boolean} trustAllHosts  Optional parameter, defaults to false. If set to true, it accepts all security certificates. This is useful since Android rejects self-signed security certificates. Not recommended for production use. Supported on Android and iOS.
+   * @param {FileUploadOptions} [options]  Optional parameters.
+   * @param {boolean} [trustAllHosts]  Optional parameter, defaults to false. If set to true, it accepts all security certificates. This is useful since Android rejects self-signed security certificates. Not recommended for production use. Supported on Android and iOS.
    * @returns {Promise<FileUploadResult>} Returns a Promise that resolves to a FileUploadResult and rejects with FileTransferError.
    */
   @CordovaInstance({
     successIndex: 2,
     errorIndex: 3
   })
-  upload(fileUrl: string, url: string, options?: FileUploadOptions, trustAllHosts?: boolean): Promise<FileUploadResult> { return; }
+  upload(
+    fileUrl: string,
+    url: string,
+    options?: FileUploadOptions,
+    trustAllHosts?: boolean
+  ): Promise<FileUploadResult> {
+    return;
+  }
 
   /**
    * Downloads a file from server.
    *
    * @param {string} source  URL of the server to download the file, as encoded by encodeURI().
    * @param {string} target  Filesystem url representing the file on the device. For backwards compatibility, this can also be the full path of the file on the device.
-   * @param {boolean} trustAllHosts  Optional parameter, defaults to false. If set to true, it accepts all security certificates. This is useful because Android rejects self-signed security certificates. Not recommended for production use. Supported on Android and iOS.
-   * @param {object} Optional parameters, currently only supports headers (such as Authorization (Basic Authentication), etc).
+   * @param {boolean} [trustAllHosts]  Optional parameter, defaults to false. If set to true, it accepts all security certificates. This is useful because Android rejects self-signed security certificates. Not recommended for production use. Supported on Android and iOS.
+   * @param {object} [Optional] parameters, currently only supports headers (such as Authorization (Basic Authentication), etc).
    * @returns {Promise<any>} Returns a Promise that resolves to a FileEntry object.
    */
   @CordovaInstance({
     successIndex: 2,
     errorIndex: 3
   })
-  download(source: string, target: string, trustAllHosts?: boolean, options?: { [s: string]: any; }): Promise<any> { return; }
+  download(
+    source: string,
+    target: string,
+    trustAllHosts?: boolean,
+    options?: { [s: string]: any }
+  ): Promise<any> {
+    return;
+  }
 
   /**
    * Registers a listener that gets called whenever a new chunk of data is transferred.
-   * @param listener {function} Listener that takes a progress event.
+   * @param {Function} listener Listener that takes a progress event.
    */
   @InstanceCheck({ sync: true })
   onProgress(listener: (event: ProgressEvent) => any): void {