diff --git a/src/Formidable.js b/src/Formidable.js
index 2f42eab6..664c9058 100644
--- a/src/Formidable.js
+++ b/src/Formidable.js
@@ -8,12 +8,13 @@ import once from 'once';
 import dezalgo from 'dezalgo';
 import { EventEmitter } from 'events';
 import { StringDecoder } from 'string_decoder';
-import {
-  octetstream,
-  querystring,
-  multipart,
-  json,
-} from "./plugins/index.js";
+import { octetstream, querystring, multipart, json } from './plugins/index.js';
+import PersistentFile from './PersistentFile.js';
+import VolatileFile from './VolatileFile.js';
+import DummyParser from './parsers/Dummy.js';
+import MultipartParser from './parsers/Multipart.js';
+import * as errors from './FormidableError.js';
+import FormidableError from './FormidableError.js';
 
 const toHexoId = hexoid(25);
 const DEFAULT_OPTIONS = {
@@ -26,27 +27,14 @@ const DEFAULT_OPTIONS = {
   encoding: 'utf-8',
   hashAlgorithm: false,
   uploadDir: os.tmpdir(),
-  enabledPlugins: [
-    octetstream,
-    querystring,
-    multipart,
-    json,
-  ],
+  enabledPlugins: [octetstream, querystring, multipart, json],
   fileWriteStreamHandler: null,
   defaultInvalidName: 'invalid-name',
-  filter: function () {
+  filter() {
     return true;
   },
 };
 
-import PersistentFile from './PersistentFile.js';
-import VolatileFile from './VolatileFile.js';
-import DummyParser from './parsers/Dummy.js';
-import MultipartParser from './parsers/Multipart.js';
-import * as errors from './FormidableError.js';
-import FormidableError from './FormidableError.js';
-
-
 function hasOwnProp(obj, key) {
   return Object.prototype.hasOwnProperty.call(obj, key);
 }
@@ -151,26 +139,22 @@ class IncomingForm extends EventEmitter {
       const files = {};
 
       this.on('field', (name, value) => {
-        if (
-          this.type === 'multipart' || this.type === 'urlencoded'
-        ) {
+        if (this.type === 'multipart' || this.type === 'urlencoded') {
           if (!hasOwnProp(this.fields, name)) {
             this.fields[name] = [value];
           } else {
             this.fields[name].push(value);
           }
-          
         } else {
           this.fields[name] = value;
         }
       });
       this.on('file', (name, file) => {
-          if (!hasOwnProp(files, name)) {
-              files[name] = [file];
-          } else {
-              files[name].push(file);
-          }
-        
+        if (!hasOwnProp(files, name)) {
+          files[name] = [file];
+        } else {
+          files[name].push(file);
+        }
       });
       this.on('error', (err) => {
         callback(err, this.fields, files);
@@ -537,8 +521,6 @@ class IncomingForm extends EventEmitter {
     return basename.slice(firstDot, lastDot) + extname;
   }
 
-
-
   _joinDirectoryName(name) {
     const newPath = path.join(this.uploadDir, name);
 
@@ -570,12 +552,13 @@ class IncomingForm extends EventEmitter {
         const name = toHexoId();
 
         if (part && this.options.keepExtensions) {
-          const originalFilename = typeof part === 'string' ? part : part.originalFilename;
+          const originalFilename =
+            typeof part === 'string' ? part : part.originalFilename;
           return `${name}${this._getExtension(originalFilename)}`;
         }
-    
+
         return name;
-      }
+      };
     }
   }
 
@@ -609,8 +592,5 @@ class IncomingForm extends EventEmitter {
   }
 }
 
-
 export default IncomingForm;
-export {
-    DEFAULT_OPTIONS,
-};
+export { DEFAULT_OPTIONS };
diff --git a/src/FormidableError.js b/src/FormidableError.js
index c2210255..7cbdb15c 100644
--- a/src/FormidableError.js
+++ b/src/FormidableError.js
@@ -1,4 +1,3 @@
-
 const missingPlugin = 1000;
 const pluginFunction = 1001;
 const aborted = 1002;
@@ -41,4 +40,4 @@ export {
   unknownTransferEncoding,
 };
 
-export default FormidableError;
\ No newline at end of file
+export default FormidableError;
diff --git a/src/helpers/firstValues.js b/src/helpers/firstValues.js
index ea1c9b44..6c9944cc 100644
--- a/src/helpers/firstValues.js
+++ b/src/helpers/firstValues.js
@@ -1,16 +1,19 @@
-import { multipartType } from "../plugins/multipart.js";
-import { querystringType } from "../plugins/querystring.js";
-
-export { firstValues };
+import { multipartType } from '../plugins/multipart.js';
+import { querystringType } from '../plugins/querystring.js';
 
 const firstValues = (form, fields, exceptions = []) => {
-    if (form.type !== querystringType && form.type !== multipartType) {
-        return fields;
-    }
-    return Object.fromEntries(Object.entries(fields).map(([key, value]) => {
-        if (exceptions.includes(key)) {
-            return [key, value];
-        }
-        return [key, value[0]];    
-    }));
+  if (form.type !== querystringType && form.type !== multipartType) {
+    return fields;
+  }
+
+  return Object.fromEntries(
+    Object.entries(fields).map(([key, value]) => {
+      if (exceptions.includes(key)) {
+        return [key, value];
+      }
+      return [key, value[0]];
+    }),
+  );
 };
+
+export { firstValues };
diff --git a/src/helpers/readBooleans.js b/src/helpers/readBooleans.js
index 40fb3361..bd969134 100644
--- a/src/helpers/readBooleans.js
+++ b/src/helpers/readBooleans.js
@@ -1,10 +1,10 @@
-export { readBooleans };
-
 const readBooleans = (fields, listOfBooleans) => {
-    // html forms do not send off at all
-    const fieldsWithBooleans = Object.assign({}, fields);
-    listOfBooleans.forEach(key => {
-        fieldsWithBooleans[key] = fields[key] === `on` || fields[key] === true;
-    });
-    return fieldsWithBooleans;
+  // html forms do not send off at all
+  const fieldsWithBooleans = { ...fields };
+  listOfBooleans.forEach((key) => {
+    fieldsWithBooleans[key] = fields[key] === `on` || fields[key] === true;
+  });
+  return fieldsWithBooleans;
 };
+
+export { readBooleans };
diff --git a/src/parsers/Dummy.js b/src/parsers/Dummy.js
index ab2d4bfb..49409b61 100644
--- a/src/parsers/Dummy.js
+++ b/src/parsers/Dummy.js
@@ -1,6 +1,5 @@
 /* eslint-disable no-underscore-dangle */
 
-
 import { Transform } from 'stream';
 
 class DummyParser extends Transform {
diff --git a/src/parsers/JSON.js b/src/parsers/JSON.js
index 9b977044..9f8dede2 100644
--- a/src/parsers/JSON.js
+++ b/src/parsers/JSON.js
@@ -1,6 +1,5 @@
 /* eslint-disable no-underscore-dangle */
 
-
 import { Transform } from 'stream';
 
 class JSONParser extends Transform {
diff --git a/src/parsers/Multipart.js b/src/parsers/Multipart.js
index e6b663a2..25badce4 100644
--- a/src/parsers/Multipart.js
+++ b/src/parsers/Multipart.js
@@ -3,12 +3,10 @@
 /* eslint-disable no-plusplus */
 /* eslint-disable no-underscore-dangle */
 
-
 import { Transform } from 'stream';
 import * as errors from '../FormidableError.js';
 import FormidableError from '../FormidableError.js';
 
-
 let s = 0;
 const STATE = {
   PARSER_UNINITIALIZED: s++,
@@ -343,4 +341,4 @@ MultipartParser.stateToString = (stateNumber) => {
   }
 };
 
-export default Object.assign(MultipartParser, { STATES: STATES });
+export default Object.assign(MultipartParser, { STATES });
diff --git a/src/parsers/Querystring.js b/src/parsers/Querystring.js
index 372377f4..0cc6e3fa 100644
--- a/src/parsers/Querystring.js
+++ b/src/parsers/Querystring.js
@@ -2,7 +2,6 @@
 
 import { Transform } from 'stream';
 
-
 // This is a buffering parser, not quite as nice as the multipart one.
 // If I find time I'll rewrite this to be fully streaming as well
 class QuerystringParser extends Transform {
diff --git a/src/parsers/StreamingQuerystring.js b/src/parsers/StreamingQuerystring.js
index 9fab49c0..92c6c419 100644
--- a/src/parsers/StreamingQuerystring.js
+++ b/src/parsers/StreamingQuerystring.js
@@ -1,11 +1,9 @@
 // not used
 /* eslint-disable no-underscore-dangle */
 
-
 import { Transform } from 'stream';
 import FormidableError, { maxFieldsSizeExceeded } from '../FormidableError.js';
 
-
 const AMPERSAND = 38;
 const EQUALS = 61;
 
@@ -80,9 +78,9 @@ class QuerystringParser extends Transform {
     // Emit the last field
     if (this.readingKey) {
       // we only have a key if there's something in the buffer. We definitely have no value
-        if (this.buffer && this.buffer.length){
-          this.emitField(this.buffer.toString('ascii'));
-        }
+      if (this.buffer && this.buffer.length) {
+        this.emitField(this.buffer.toString('ascii'));
+      }
     } else {
       // We have a key, we may or may not have a value
       this.emitField(
diff --git a/src/parsers/index.js b/src/parsers/index.js
index 17ea31c5..a24b4f12 100644
--- a/src/parsers/index.js
+++ b/src/parsers/index.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import JSONParser from './JSON.js';
 import DummyParser from './Dummy.js';
 import MultipartParser from './Multipart.js';
diff --git a/src/plugins/index.js b/src/plugins/index.js
index 2b181c75..18318c5f 100644
--- a/src/plugins/index.js
+++ b/src/plugins/index.js
@@ -1,13 +1,6 @@
-'use strict';
-
 import octetstream from './octetstream.js';
 import querystring from './querystring.js';
 import multipart from './multipart.js';
 import json from './json.js';
 
-export  {
-  octetstream,
-  querystring,
-  multipart,
-  json,
-};
+export { octetstream, querystring, multipart, json };
diff --git a/src/plugins/multipart.js b/src/plugins/multipart.js
index 6072a356..52c836cb 100644
--- a/src/plugins/multipart.js
+++ b/src/plugins/multipart.js
@@ -1,13 +1,10 @@
 /* eslint-disable no-underscore-dangle */
 
-'use strict';
-
 import { Stream } from 'stream';
 import MultipartParser from '../parsers/Multipart.js';
 import * as errors from '../FormidableError.js';
 import FormidableError from '../FormidableError.js';
 
-
 export const multipartType = 'multipart';
 // the `options` is also available through the `options` / `formidable.options`
 export default function plugin(formidable, options) {
@@ -36,7 +33,7 @@ export default function plugin(formidable, options) {
       self._error(err);
     }
   }
-};
+}
 
 // Note that it's a good practice (but it's up to you) to use the `this.options` instead
 // of the passed `options` (second) param, because when you decide
diff --git a/src/plugins/octetstream.js b/src/plugins/octetstream.js
index cfbe721a..5d29ad17 100644
--- a/src/plugins/octetstream.js
+++ b/src/plugins/octetstream.js
@@ -1,6 +1,5 @@
 /* eslint-disable no-underscore-dangle */
 
-
 import OctetStreamParser from '../parsers/OctetStream.js';
 
 export const octetStreamType = 'octet-stream';
@@ -17,7 +16,7 @@ export default function plugin(formidable, options) {
   }
 
   return self;
-};
+}
 
 // Note that it's a good practice (but it's up to you) to use the `this.options` instead
 // of the passed `options` (second) param, because when you decide
diff --git a/test/fixture/js/encoding.js b/test/fixture/js/encoding.js
index a227ae46..b887db3e 100644
--- a/test/fixture/js/encoding.js
+++ b/test/fixture/js/encoding.js
@@ -1,10 +1,3 @@
-export {
-    menu_separator_png_http,
-    beta_sticker_1_png_http,
-    blank_gif_http,
-    binaryfile_tar_gz_http,
-    plain_txt_http,
-};
 const menu_separator_png_http = [
   {
     type: 'file',
@@ -54,3 +47,11 @@ const plain_txt_http = [
     sha1: 'b31d07bac24ac32734de88b3687dddb10e976872',
   },
 ];
+
+export {
+  menu_separator_png_http,
+  beta_sticker_1_png_http,
+  blank_gif_http,
+  binaryfile_tar_gz_http,
+  plain_txt_http,
+};
diff --git a/test/fixture/js/misc.js b/test/fixture/js/misc.js
index e3c530ee..80e36eab 100644
--- a/test/fixture/js/misc.js
+++ b/test/fixture/js/misc.js
@@ -1,3 +1,9 @@
+const empty_http = [];
+const empty_urlencoded_http = [];
+const empty_multipart_http = [];
+const empty_multipart2_http = [];
+const _minimal_http = [];
+
 export {
   empty_http,
   empty_urlencoded_http,
@@ -5,9 +11,3 @@ export {
   empty_multipart2_http,
   _minimal_http,
 };
-
-const empty_http = [];
-const empty_urlencoded_http = [];
-const empty_multipart_http = [];
-const empty_multipart2_http = [];
-const _minimal_http = [];
\ No newline at end of file
diff --git a/test/fixture/js/no-filename.js b/test/fixture/js/no-filename.js
index 2f71b527..c39355f7 100644
--- a/test/fixture/js/no-filename.js
+++ b/test/fixture/js/no-filename.js
@@ -1,8 +1,3 @@
-export {
-    generic_http,
-    filename_name_http,
-}
-
 const generic_http = [
   {
     type: 'file',
@@ -22,3 +17,5 @@ const filename_name_http = [
     sha1: 'b31d07bac24ac32734de88b3687dddb10e976872',
   },
 ];
+
+export { generic_http, filename_name_http };
diff --git a/test/fixture/js/preamble.js b/test/fixture/js/preamble.js
index a60aa476..aed3d462 100644
--- a/test/fixture/js/preamble.js
+++ b/test/fixture/js/preamble.js
@@ -1,8 +1,3 @@
-export {
-    crlf_http,
-    preamble_http,
-};
-
 const crlf_http = [
   {
     type: 'file',
@@ -22,3 +17,5 @@ const preamble_http = [
     sha1: 'a47f7a8a7959f36c3f151ba8b0bd28f2d6b606e2',
   },
 ];
+
+export { crlf_http, preamble_http };
diff --git a/test/fixture/js/special-chars-in-filename.js b/test/fixture/js/special-chars-in-filename.js
index 66517073..1aa9d991 100644
--- a/test/fixture/js/special-chars-in-filename.js
+++ b/test/fixture/js/special-chars-in-filename.js
@@ -2,7 +2,7 @@ const properFilename = 'funkyfilename.txt';
 
 function expect(originalFilename, fixtureName) {
   return [
-    { 
+    {
       type: 'field',
       name: 'title',
       originalFilename: properFilename,
@@ -11,7 +11,7 @@ function expect(originalFilename, fixtureName) {
     {
       type: 'file',
       name: 'upload',
-      originalFilename: originalFilename,
+      originalFilename,
       fixture: fixtureName,
     },
   ];
diff --git a/test/fixture/js/workarounds.js b/test/fixture/js/workarounds.js
index 9503b6fc..c3ab14b7 100644
--- a/test/fixture/js/workarounds.js
+++ b/test/fixture/js/workarounds.js
@@ -1,8 +1,3 @@
-export {
-    missing_hyphens1_http,
-    missing_hyphens2_http,
-}
-
 const missing_hyphens1_http = [
   {
     type: 'file',
@@ -22,3 +17,5 @@ const missing_hyphens2_http = [
     sha1: '798e39a4a1034232ed26e0aadd67f5d1ff10b966',
   },
 ];
+
+export { missing_hyphens1_http, missing_hyphens2_http };