diff --git a/lib/multipart.js b/lib/multipart.js
index d88d468b1f..cf7f6d9e53 100644
--- a/lib/multipart.js
+++ b/lib/multipart.js
@@ -28,14 +28,17 @@ const multipartDataGenerator = (method, data, headers) => {
     const v = flattenedData[k];
     push(`--${segno}`);
     if (Object.prototype.hasOwnProperty.call(v, 'data')) {
+      // eslint-disable-next-line no-warning-comments
+      // TODO: I don't think we ever hit this branch
+      const typedEntry = v;
       push(
         `Content-Disposition: form-data; name=${q(k)}; filename=${q(
-          v.name || 'blob'
+          typedEntry.name || 'blob'
         )}`
       );
-      push(`Content-Type: ${v.type || 'application/octet-stream'}`);
+      push(`Content-Type: ${typedEntry.type || 'application/octet-stream'}`);
       push('');
-      push(v.data);
+      push(typedEntry.data);
     } else {
       push(`Content-Disposition: form-data; name=${q(k)}`);
       push('');
diff --git a/lib/stripe.js b/lib/stripe.js
index 60b82e7312..b0b3f748e8 100644
--- a/lib/stripe.js
+++ b/lib/stripe.js
@@ -1,5 +1,6 @@
 'use strict';
 const _Error = require('./Error');
+const StripeResource = require('./StripeResource');
 const resources = require('./resources');
 const DEFAULT_HOST = 'api.stripe.com';
 const DEFAULT_PORT = '443';
@@ -39,7 +40,6 @@ const ALLOWED_CONFIG_PROPERTIES = [
   'stripeAccount',
 ];
 const EventEmitter = require('events').EventEmitter;
-const StripeResource = require('./StripeResource');
 Stripe.StripeResource = StripeResource;
 Stripe.resources = resources;
 const {HttpClient, HttpClientResponse} = require('./net/HttpClient');
@@ -286,14 +286,13 @@ Stripe.prototype = {
       throw new Error('AppInfo.name is required');
     }
     info = info || {};
-    const appInfo = APP_INFO_PROPERTIES.reduce((accum, prop) => {
+    this._appInfo = APP_INFO_PROPERTIES.reduce((accum, prop) => {
       if (typeof info[prop] == 'string') {
         accum = accum || {};
         accum[prop] = info[prop];
       }
       return accum;
     }, undefined);
-    this._appInfo = appInfo;
   },
   /**
    * @deprecated will be removed in a future major version. Use the config object instead:
diff --git a/src/utils.ts b/src/utils.ts
index 82071907e8..7832722810 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -321,7 +321,7 @@ const utils = {
    * Determine if file data is a derivative of EventEmitter class.
    * https://nodejs.org/api/events.html#events_events
    */
-  checkForStream: (obj) => {
+  checkForStream: (obj): boolean => {
     if (obj.file && obj.file.data) {
       return obj.file.data instanceof EventEmitter;
     }