From bddc6c23ea76a204b0a344a053804a801e6291e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jimmy=20Wa=CC=88rting?= <jimmy@warting.se>
Date: Tue, 12 Feb 2019 15:14:20 +0100
Subject: [PATCH] don't crash in node #72

Applied standard format
inlined the decorators
added test for few arguments
---
 FormData.js       |  163 +++---
 README.md         |    2 +
 formdata.min.js   |   22 +-
 package-lock.json | 1404 ++++++++++++++++++++++++++++++++++++++++++++-
 package.json      |    9 +-
 test/test.js      |  120 ++--
 6 files changed, 1560 insertions(+), 160 deletions(-)

diff --git a/FormData.js b/FormData.js
index 4beefcb..87f4aa7 100644
--- a/FormData.js
+++ b/FormData.js
@@ -1,7 +1,10 @@
-if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
+/* global FormData self Blob File */
+/* eslint-disable no-inner-declarations */
+
+if (typeof Blob === 'function' && (typeof FormData === 'undefined' || !FormData.prototype.keys)) {
   const global = typeof window === 'object'
-    ? window : typeof self === 'object'
-    ? self : this
+    ? window
+    : typeof self === 'object' ? self : this
 
   // keep a reference to native implementation
   const _FormData = global.FormData
@@ -16,9 +19,8 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
   // https://github.com/babel/babel/issues/1966
 
   const stringTag = global.Symbol && Symbol.toStringTag
-  const map = new WeakMap
+  const map = new WeakMap()
   const wm = o => map.get(o)
-  const arrayFrom = Array.from || (obj => [].slice.call(obj))
 
   // Add missing stringTags to blob and files
   if (stringTag) {
@@ -33,11 +35,11 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
 
   // Fix so you can construct your own File
   try {
-    new File([], '')
+    new File([], '') // eslint-disable-line
   } catch (a) {
-    global.File = function(b, d, c) {
+    global.File = function File (b, d, c) {
       const blob = new Blob(b, c)
-      const t = c && void 0 !== c.lastModified ? new Date(c.lastModified) : new Date
+      const t = c && void 0 !== c.lastModified ? new Date(c.lastModified) : new Date()
 
       Object.defineProperties(blob, {
         name: {
@@ -50,7 +52,7 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
           value: +t
         },
         toString: {
-          value() {
+          value () {
             return '[object File]'
           }
         }
@@ -66,50 +68,42 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
     }
   }
 
-  function normalizeValue([value, filename]) {
-    if (value instanceof Blob)
+  function normalizeValue ([value, filename]) {
+    if (value instanceof Blob) {
       // Should always returns a new File instance
       // console.assert(fd.get(x) !== fd.get(x))
       value = new File([value], filename, {
         type: value.type,
         lastModified: value.lastModified
       })
+    }
 
     return value
   }
 
-  function stringify(name) {
-    if (!arguments.length)
-      throw new TypeError('1 argument required, but only 0 present.')
-
-    return [name + '']
+  function ensureArgs (args, expected) {
+    if (args.length < expected) {
+      throw new TypeError(`${expected} argument required, but only ${args.length} present.`)
+    }
   }
 
-  function normalizeArgs(name, value, filename) {
-    if (arguments.length < 2)
-      throw new TypeError(
-        `2 arguments required, but only ${arguments.length} present.`
-      )
-
+  function normalizeArgs (name, value, filename) {
     return value instanceof Blob
       // normalize name and filename if adding an attachment
-      ? [name + '', value, filename !== undefined
+      ? [String(name), value, filename !== undefined
         ? filename + '' // Cast filename to string if 3th arg isn't undefined
         : typeof value.name === 'string' // if name prop exist
           ? value.name // Use File.name
           : 'blob'] // otherwise fallback to Blob
 
       // If no attachment, just cast the args to strings
-      : [name + '', value + '']
+      : [String(name), String(value)]
   }
 
   // normalize linefeeds for textareas
   // https://html.spec.whatwg.org/multipage/form-elements.html#textarea-line-break-normalisation-transformation
-  function normalizeLinefeeds(value) {
-    if (typeof value === "string") {
-      value = value.replace(/\r\n/g, "\n").replace(/\n/g, "\r\n")
-    }
-    return value
+  function normalizeLinefeeds (value) {
+    return value.replace(/\r\n/g, '\n').replace(/\n/g, '\r\n')
   }
 
   function each (arr, cb) {
@@ -122,17 +116,15 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
    * @implements {Iterable}
    */
   class FormDataPolyfill {
-
     /**
      * FormData class
      *
      * @param {HTMLElement=} form
      */
-    constructor(form) {
+    constructor (form) {
       map.set(this, Object.create(null))
 
-      if (!form)
-        return this
+      if (!form) return this
 
       const self = this
 
@@ -156,7 +148,6 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
       })
     }
 
-
     /**
      * Append a field
      *
@@ -165,38 +156,40 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
      * @param   {String=}          filename  filename to use with blob
      * @return  {Undefined}
      */
-    append(name, value, filename) {
+    append (name, value, filename) {
+      ensureArgs(arguments, 2)
+      ;[name, value, filename] = normalizeArgs.apply(null, arguments)
       const map = wm(this)
 
-      if (!map[name])
-        map[name] = []
+      if (!map[name]) map[name] = []
 
       map[name].push([value, filename])
     }
 
-
     /**
      * Delete all fields values given name
      *
      * @param   {String}  name  Field name
      * @return  {Undefined}
      */
-    delete(name) {
-      delete wm(this)[name]
+    delete (name) {
+      ensureArgs(arguments, 1)
+      delete wm(this)[String(name)]
     }
 
-
     /**
      * Iterate over all fields as [name, value]
      *
      * @return {Iterator}
      */
-    *entries() {
+    * entries () {
       const map = wm(this)
 
-      for (let name in map)
-        for (let value of map[name])
+      for (let name in map) {
+        for (let value of map[name]) {
           yield [name, normalizeValue(value)]
+        }
+      }
     }
 
     /**
@@ -206,12 +199,13 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
      * @param   {Object=}   thisArg   `this` context for callback function
      * @return  {Undefined}
      */
-    forEach(callback, thisArg) {
-      for (let [name, value] of this)
+    forEach (callback, thisArg) {
+      ensureArgs(arguments, 1)
+      for (let [name, value] of this) {
         callback.call(thisArg, value, name, this)
+      }
     }
 
-
     /**
      * Return first field value given name
      * or null if non existen
@@ -219,45 +213,46 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
      * @param   {String}  name      Field name
      * @return  {String|File|null}  value Fields value
      */
-    get(name) {
+    get (name) {
+      ensureArgs(arguments, 1)
       const map = wm(this)
+      name = String(name)
       return map[name] ? normalizeValue(map[name][0]) : null
     }
 
-
     /**
      * Return all fields values given name
      *
      * @param   {String}  name  Fields name
      * @return  {Array}         [{String|File}]
      */
-    getAll(name) {
-      return (wm(this)[name] || []).map(normalizeValue)
+    getAll (name) {
+      ensureArgs(arguments, 1)
+      return (wm(this)[String(name)] || []).map(normalizeValue)
     }
 
-
     /**
      * Check for field name existence
      *
      * @param   {String}   name  Field name
      * @return  {boolean}
      */
-    has(name) {
-      return name in wm(this)
+    has (name) {
+      ensureArgs(arguments, 1)
+      return String(name) in wm(this)
     }
 
-
     /**
      * Iterate over all fields name
      *
      * @return {Iterator}
      */
-    *keys() {
-      for (let [name] of this)
+    * keys () {
+      for (let [name] of this) {
         yield name
+      }
     }
 
-
     /**
      * Overwrite all values given name
      *
@@ -266,44 +261,45 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
      * @param   {String=}   filename  Filename (optional)
      * @return  {Undefined}
      */
-    set(name, value, filename) {
+    set (name, value, filename) {
+      ensureArgs(arguments, 2)
+      ;[name, value, filename] = normalizeArgs.apply(null, arguments)
       wm(this)[name] = [[value, filename]]
     }
 
-
     /**
      * Iterate over all fields
      *
      * @return {Iterator}
      */
-    *values() {
-      for (let [name, value] of this)
+    * values () {
+      for (let [, value] of this) {
         yield value
+      }
     }
 
-
     /**
      * Return a native (perhaps degraded) FormData with only a `append` method
      * Can throw if it's not supported
      *
      * @return {FormData}
      */
-    ['_asNative']() {
-      const fd = new _FormData
+    ['_asNative'] () {
+      const fd = new _FormData()
 
-      for (let [name, value] of this)
+      for (let [name, value] of this) {
         fd.append(name, value)
+      }
 
       return fd
     }
 
-
     /**
      * [_blob description]
      *
      * @return {Blob} [description]
      */
-    ['_blob']() {
+    ['_blob'] () {
       const boundary = '----formdata-polyfill-' + Math.random()
       const chunks = []
 
@@ -326,32 +322,31 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
 
       chunks.push(`--${boundary}--`)
 
-      return new Blob(chunks, {type: 'multipart/form-data; boundary=' + boundary})
+      return new Blob(chunks, {
+        type: 'multipart/form-data; boundary=' + boundary
+      })
     }
 
-
     /**
      * The class itself is iterable
      * alias for formdata.entries()
      *
      * @return  {Iterator}
      */
-    [Symbol.iterator]() {
+    [Symbol.iterator] () {
       return this.entries()
     }
 
-
     /**
      * Create the default string description.
      *
      * @return  {String} [object FormData]
      */
-    toString() {
+    toString () {
       return '[object FormData]'
     }
   }
 
-
   if (stringTag) {
     /**
      * Create the default string description.
@@ -362,25 +357,9 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
     FormDataPolyfill.prototype[stringTag] = 'FormData'
   }
 
-  const decorations = [
-    ['append', normalizeArgs],
-    ['delete', stringify],
-    ['get',    stringify],
-    ['getAll', stringify],
-    ['has',    stringify],
-    ['set',    normalizeArgs]
-  ]
-
-  decorations.forEach(arr => {
-    const orig = FormDataPolyfill.prototype[arr[0]]
-    FormDataPolyfill.prototype[arr[0]] = function() {
-      return orig.apply(this, arr[1].apply(this, arrayFrom(arguments)))
-    }
-  })
-
   // Patch xhr's send method to call _blob transparently
   if (_send) {
-    XMLHttpRequest.prototype.send = function(data) {
+    global.XMLHttpRequest.prototype.send = function (data) {
       // I would check if Content-Type isn't already set
       // But xhr lacks getRequestHeaders functionallity
       // https://github.com/jimmywarting/FormData/issues/44
@@ -398,7 +377,7 @@ if (typeof FormData === 'undefined' || !FormData.prototype.keys) {
   if (_fetch) {
     const _fetch = global.fetch
 
-    global.fetch = function(input, init) {
+    global.fetch = function (input, init) {
       if (init && init.body && init.body instanceof FormDataPolyfill) {
         init.body = init.body['_blob']()
       }
diff --git a/README.md b/README.md
index 83d894c..913a081 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@
 
 [![npm version][npm-image]][npm-url]
 
+[![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
+
 ```bash
 npm install formdata-polyfill
 ```
diff --git a/formdata.min.js b/formdata.min.js
index 81c8e07..cca74ec 100644
--- a/formdata.min.js
+++ b/formdata.min.js
@@ -1,17 +1,17 @@
 ;(function(){var k;function l(a){var b=0;return function(){return b<a.length?{done:!1,value:a[b++]}:{done:!0}}}var m="function"==typeof Object.defineProperties?Object.defineProperty:function(a,b,d){a!=Array.prototype&&a!=Object.prototype&&(a[b]=d.value)},n="undefined"!=typeof window&&window===this?this:"undefined"!=typeof global&&null!=global?global:this;function p(){p=function(){};n.Symbol||(n.Symbol=r)}var r=function(){var a=0;return function(b){return"jscomp_symbol_"+(b||"")+a++}}();
-function u(){p();var a=n.Symbol.iterator;a||(a=n.Symbol.iterator=n.Symbol("iterator"));"function"!=typeof Array.prototype[a]&&m(Array.prototype,a,{configurable:!0,writable:!0,value:function(){return v(l(this))}});u=function(){}}function v(a){u();a={next:a};a[n.Symbol.iterator]=function(){return this};return a}function x(a){var b="undefined"!=typeof Symbol&&Symbol.iterator&&a[Symbol.iterator];return b?b.call(a):{next:l(a)}}var y;
+function t(){p();var a=n.Symbol.iterator;a||(a=n.Symbol.iterator=n.Symbol("iterator"));"function"!=typeof Array.prototype[a]&&m(Array.prototype,a,{configurable:!0,writable:!0,value:function(){return v(l(this))}});t=function(){}}function v(a){t();a={next:a};a[n.Symbol.iterator]=function(){return this};return a}function w(a){var b="undefined"!=typeof Symbol&&Symbol.iterator&&a[Symbol.iterator];return b?b.call(a):{next:l(a)}}var y;
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diff --git a/package-lock.json b/package-lock.json
index 1fa409c..23a31f4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "formdata-polyfill",
-  "version": "3.0.14",
+  "version": "3.0.15",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -14,12 +14,60 @@
         "negotiator": "0.6.1"
       }
     },
+    "acorn": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.0.tgz",
+      "integrity": "sha512-MW/FjM+IvU9CgBzjO3UIPCE2pyEwUsoFl+VGdczOPEdxfGFjuKny/gN54mOuX7Qxmb9Rg9MCn2oKiSUeW+pjrw==",
+      "dev": true
+    },
+    "acorn-jsx": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.0.1.tgz",
+      "integrity": "sha512-HJ7CfNHrfJLlNTzIEUTj43LNWGkqpRLxm3YjAlcD0ACydk9XynzYsCBHxut+iqt+1aBXkx9UP/w/ZqMr13XIzg==",
+      "dev": true
+    },
     "after": {
       "version": "0.8.2",
       "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
       "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=",
       "dev": true
     },
+    "ajv": {
+      "version": "6.9.1",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.9.1.tgz",
+      "integrity": "sha512-XDN92U311aINL77ieWHmqCcNlwjoP5cHXDxIxbf2MaPYuCXOHS7gHH8jktxeK5omgd52XbSTX6a4Piwd1pQmzA==",
+      "dev": true,
+      "requires": {
+        "fast-deep-equal": "^2.0.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
+      }
+    },
+    "ajv-keywords": {
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.4.0.tgz",
+      "integrity": "sha512-aUjdRFISbuFOl0EIZc+9e4FfZp0bDZgAdOOf30bJmw8VM9v84SHyVyxDfbWxpGYbdZD/9XoKxfHVNmxPkhwyGw==",
+      "dev": true
+    },
+    "ansi-escapes": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.2.0.tgz",
+      "integrity": "sha512-cBhpre4ma+U0T1oM5fXg7Dy1Jw7zzwv7lt/GoCpr+hDQJoYnKVPLL4dCvSEFMmQurOQvSrwT7SL/DAlhBI97RQ==",
+      "dev": true
+    },
+    "ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "dev": true
+    },
+    "ansi-styles": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+      "dev": true
+    },
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       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-2.0.0.tgz",
@@ -30,6 +78,15 @@
         "normalize-path": "^2.1.1"
       }
     },
+    "argparse": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "~1.0.2"
+      }
+    },
     "arr-diff": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
@@ -48,6 +105,16 @@
       "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
       "dev": true
     },
+    "array-includes": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.0.3.tgz",
+      "integrity": "sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.2",
+        "es-abstract": "^1.7.0"
+      }
+    },
     "array-slice": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-0.2.3.tgz",
@@ -96,6 +163,47 @@
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       "dev": true
     },
+    "babel-code-frame": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
+      "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+      "dev": true,
+      "requires": {
+        "chalk": "^1.1.3",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.2"
+      },
+      "dependencies": {
+        "chalk": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        },
+        "supports-color": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+          "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
+          "dev": true
+        }
+      }
+    },
     "backo2": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/backo2/-/backo2-1.0.2.tgz",
@@ -310,12 +418,27 @@
         "unset-value": "^1.0.0"
       }
     },
+    "caller-path": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/caller-path/-/caller-path-0.1.0.tgz",
+      "integrity": "sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=",
+      "dev": true,
+      "requires": {
+        "callsites": "^0.2.0"
+      }
+    },
     "callsite": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/callsite/-/callsite-1.0.0.tgz",
       "integrity": "sha1-KAOY5dZkvXQDi28JBRU+borxvCA=",
       "dev": true
     },
+    "callsites": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-0.2.0.tgz",
+      "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=",
+      "dev": true
+    },
     "chai": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
@@ -330,6 +453,34 @@
         "type-detect": "^4.0.5"
       }
     },
+    "chalk": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+      "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "^3.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "supports-color": "^5.3.0"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        }
+      }
+    },
+    "chardet": {
+      "version": "0.4.2",
+      "resolved": "https://registry.npmjs.org/chardet/-/chardet-0.4.2.tgz",
+      "integrity": "sha1-tUc7M9yXxCTl2Y3IfVXU2KKci/I=",
+      "dev": true
+    },
     "check-error": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
@@ -386,6 +537,21 @@
         }
       }
     },
+    "cli-cursor": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-2.1.0.tgz",
+      "integrity": "sha1-s12sN2R5+sw+lHR9QdDQ9SOP/LU=",
+      "dev": true,
+      "requires": {
+        "restore-cursor": "^2.0.0"
+      }
+    },
+    "cli-width": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.0.tgz",
+      "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
+      "dev": true
+    },
     "collection-visit": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/collection-visit/-/collection-visit-1.0.0.tgz",
@@ -396,6 +562,21 @@
         "object-visit": "^1.0.0"
       }
     },
+    "color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dev": true,
+      "requires": {
+        "color-name": "1.1.3"
+      }
+    },
+    "color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
+      "dev": true
+    },
     "colors": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
@@ -453,6 +634,12 @@
         "utils-merge": "1.0.1"
       }
     },
+    "contains-path": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/contains-path/-/contains-path-0.1.0.tgz",
+      "integrity": "sha1-/ozxhP9mcLa67wGp1IYaXL7EEgo=",
+      "dev": true
+    },
     "content-type": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
@@ -483,6 +670,19 @@
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
       "dev": true
     },
+    "cross-spawn": {
+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
+      "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
+      "dev": true,
+      "requires": {
+        "nice-try": "^1.0.4",
+        "path-key": "^2.0.1",
+        "semver": "^5.5.0",
+        "shebang-command": "^1.2.0",
+        "which": "^1.2.9"
+      }
+    },
     "custom-event": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/custom-event/-/custom-event-1.0.1.tgz",
@@ -504,6 +704,12 @@
         "ms": "2.0.0"
       }
     },
+    "debug-log": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/debug-log/-/debug-log-1.0.1.tgz",
+      "integrity": "sha1-IwdjLUwEOCuN+KMvcLiVBG1SdF8=",
+      "dev": true
+    },
     "decode-uri-component": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
@@ -519,6 +725,21 @@
         "type-detect": "^4.0.0"
       }
     },
+    "deep-is": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
+      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
+      "dev": true
+    },
+    "define-properties": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
+      "integrity": "sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==",
+      "dev": true,
+      "requires": {
+        "object-keys": "^1.0.12"
+      }
+    },
     "define-property": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/define-property/-/define-property-2.0.2.tgz",
@@ -560,6 +781,28 @@
         }
       }
     },
+    "deglob": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/deglob/-/deglob-2.1.1.tgz",
+      "integrity": "sha512-2kjwuGGonL7gWE1XU4Fv79+vVzpoQCl0V+boMwWtOQJV2AGDabCwez++nB1Nli/8BabAfZQ/UuHPlp6AymKdWw==",
+      "dev": true,
+      "requires": {
+        "find-root": "^1.0.0",
+        "glob": "^7.0.5",
+        "ignore": "^3.0.9",
+        "pkg-config": "^1.1.0",
+        "run-parallel": "^1.1.2",
+        "uniq": "^1.0.1"
+      },
+      "dependencies": {
+        "ignore": {
+          "version": "3.3.10",
+          "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
+          "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
+          "dev": true
+        }
+      }
+    },
     "depd": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
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       "dev": true
     },
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+      "dev": true,
+      "requires": {
+        "is-fullwidth-code-point": "^2.0.0",
+        "strip-ansi": "^4.0.0"
+      }
+    },
     "string_decoder": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -2799,6 +4085,35 @@
         "safe-buffer": "~5.1.0"
       }
     },
+    "strip-ansi": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+      "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+      "dev": true,
+      "requires": {
+        "ansi-regex": "^3.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        }
+      }
+    },
+    "strip-bom": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-3.0.0.tgz",
+      "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=",
+      "dev": true
+    },
+    "strip-json-comments": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
+      "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
+      "dev": true
+    },
     "supports-color": {
       "version": "5.4.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.4.0.tgz",
@@ -2808,6 +4123,38 @@
         "has-flag": "^3.0.0"
       }
     },
+    "symbol-observable": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.0.1.tgz",
+      "integrity": "sha1-g0D8RwLDEi310iKI+IKD9RPT/dQ=",
+      "dev": true
+    },
+    "table": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/table/-/table-4.0.3.tgz",
+      "integrity": "sha512-S7rnFITmBH1EnyKcvxBh1LjYeQMmnZtCXSEbHcH6S0NoKit24ZuFO/T1vDcLdYsLQkM188PVVhQmzKIuThNkKg==",
+      "dev": true,
+      "requires": {
+        "ajv": "^6.0.1",
+        "ajv-keywords": "^3.0.0",
+        "chalk": "^2.1.0",
+        "lodash": "^4.17.4",
+        "slice-ansi": "1.0.0",
+        "string-width": "^2.1.1"
+      }
+    },
+    "text-table": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
+      "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
+      "dev": true
+    },
+    "through": {
+      "version": "2.3.8",
+      "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
+      "dev": true
+    },
     "tmp": {
       "version": "0.0.33",
       "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
@@ -2865,6 +4212,15 @@
         "repeat-string": "^1.6.1"
       }
     },
+    "type-check": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
+      "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+      "dev": true,
+      "requires": {
+        "prelude-ls": "~1.1.2"
+      }
+    },
     "type-detect": {
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
@@ -2922,6 +4278,12 @@
         }
       }
     },
+    "uniq": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/uniq/-/uniq-1.0.1.tgz",
+      "integrity": "sha1-sxxa6CVIRKOoKBVBzisEuGWnNP8=",
+      "dev": true
+    },
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
@@ -2974,6 +4336,15 @@
       "integrity": "sha512-bzpH/oBhoS/QI/YtbkqCg6VEiPYjSZtrHQM6/QnJS6OL9pKUFLqb3aFh4Scvwm45+7iAgiMkLhSbaZxUqmrprw==",
       "dev": true
     },
+    "uri-js": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
+      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
+      "dev": true,
+      "requires": {
+        "punycode": "^2.1.0"
+      }
+    },
     "urix": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
@@ -3008,6 +4379,16 @@
       "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=",
       "dev": true
     },
+    "validate-npm-package-license": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
+      "integrity": "sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==",
+      "dev": true,
+      "requires": {
+        "spdx-correct": "^3.0.0",
+        "spdx-expression-parse": "^3.0.0"
+      }
+    },
     "void-elements": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/void-elements/-/void-elements-2.0.1.tgz",
@@ -3035,6 +4416,15 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
     },
+    "write": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
+      "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
+      "dev": true,
+      "requires": {
+        "mkdirp": "^0.5.1"
+      }
+    },
     "ws": {
       "version": "3.3.3",
       "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.3.tgz",
@@ -3052,6 +4442,12 @@
       "integrity": "sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4=",
       "dev": true
     },
+    "xtend": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+      "dev": true
+    },
     "yallist": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
diff --git a/package.json b/package.json
index 6b8ab2a..26e659d 100644
--- a/package.json
+++ b/package.json
@@ -1,12 +1,12 @@
 {
   "name": "formdata-polyfill",
-  "version": "3.0.15",
+  "version": "3.0.16",
   "description": "HTML5 `FormData` polyfill for Browsers.",
   "main": "formdata.min.js",
   "scripts": {
     "build": "node build",
-    "prepare": "npm run build",
-    "test": "karma start --single-run --browsers ChromeHeadless karma.conf.js"
+    "prepare": "npm run test && npm run build",
+    "test": "standard ./FormData.js && karma start --single-run --browsers ChromeHeadless karma.conf.js"
   },
   "repository": {
     "type": "git",
@@ -35,6 +35,7 @@
     "karma-chai": "^0.1.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-mocha": "^1.3.0",
-    "mocha": "^5.2.0"
+    "mocha": "^5.2.0",
+    "standard": "^12.0.1"
   }
 }
diff --git a/test/test.js b/test/test.js
index 5a71976..74f5eb3 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,28 +1,29 @@
+/* global it describe assert expect Blob FormData */
 const native = window.FormData
 window.FormData = undefined
 
 class Polyfill {
-  constructor(args) {
+  constructor (args) {
     return new FormData(args)
   }
 }
 
-const nativeFile = window.File
+const NativeFile = window.File
 // Want to simulate the kind of error we get in
 // old safari & ie when constructing a file
-window.File = new Proxy(nativeFile, {
-  construct(target, args) {
-    throw new Error
+window.File = new Proxy(NativeFile, {
+  construct (target, args) {
+    throw new Error()
   }
 })
 
 ;[native, Polyfill].forEach(FormData => {
-  function create_formdata(...args) {
-      const fd = new FormData()
-      for (let arg of args) {
-          fd.append(...arg)
-      }
-      return fd
+  function createFormData(...args) {
+    const fd = new FormData()
+    for (let arg of args) {
+      fd.append(...arg)
+    }
+    return fd
   }
 
   function create_form(str) {
@@ -36,80 +37,94 @@ window.File = new Proxy(nativeFile, {
 
   describe('FormData ' + (FormData === native ? 'native' : 'polyfill'), () => {
     describe('append', () => {
+      it('throwOnFewArgs', () => {
+        expect(() => {
+          var fd = new FormData()
+          fd.append('key')
+        }).throw()
+      })
+
       it('testFormDataAppend1', () => {
-          assert.equal(create_formdata(['key', 'value1']).get('key'), 'value1')
+        assert.equal(createFormData(['key', 'value1']).get('key'), 'value1')
       })
 
       it('testFormDataAppend2', () => {
-          assert.equal(create_formdata(['key', 'value2'], ['key', 'value1']).get('key'), 'value2')
+        assert.equal(createFormData(['key', 'value2'], ['key', 'value1']).get('key'), 'value2')
       })
 
       it('testFormDataAppendUndefined1', () => {
-          assert.equal(create_formdata(['key', undefined]).get('key'), 'undefined')
+        assert.equal(createFormData(['key', undefined]).get('key'), 'undefined')
       })
 
       it('testFormDataAppendUndefined2', () => {
-          assert.equal(create_formdata(['key', undefined], ['key', 'value1']).get('key'), 'undefined')
+        assert.equal(createFormData(['key', undefined], ['key', 'value1']).get('key'), 'undefined')
       })
 
       it('testFormDataAppendNull1', () => {
-          assert.equal(create_formdata(['key', null]).get('key'), 'null')
+        assert.equal(createFormData(['key', null]).get('key'), 'null')
       })
 
       it('testFormDataAppendNull2', () => {
-          assert.equal(create_formdata(['key', null], ['key', 'value1']).get('key'), 'null')
+        assert.equal(createFormData(['key', null], ['key', 'value1']).get('key'), 'null')
       })
 
       it('testFormDataAppendToForm1', () => {
-          var fd = new FormData(document.createElement('form'))
-          fd.append('key', 'value1')
-          assert.equal(fd.get('key'), 'value1')
+        var fd = new FormData(document.createElement('form'))
+        fd.append('key', 'value1')
+        assert.equal(fd.get('key'), 'value1')
       })
 
       it('testFormDataAppendToForm2', () => {
-          var fd = new FormData(document.createElement('form'))
-          fd.append('key', 'value2')
-          fd.append('key', 'value1')
-          assert.equal(fd.get('key'), 'value2')
+        var fd = new FormData(document.createElement('form'))
+        fd.append('key', 'value2')
+        fd.append('key', 'value1')
+        assert.equal(fd.get('key'), 'value2')
       })
 
       it('testFormDataAppendToFormUndefined1', () => {
-          var fd = new FormData(document.createElement('form'))
-          fd.append('key', undefined)
-          assert.equal(fd.get('key'), 'undefined')
+        var fd = new FormData(document.createElement('form'))
+        fd.append('key', undefined)
+        assert.equal(fd.get('key'), 'undefined')
       })
 
       it('testFormDataAppendToFormUndefined2', () => {
-          var fd = new FormData(document.createElement('form'))
-          fd.append('key', undefined)
-          fd.append('key', 'value1')
-          assert.equal(fd.get('key'), 'undefined')
+        var fd = new FormData(document.createElement('form'))
+        fd.append('key', undefined)
+        fd.append('key', 'value1')
+        assert.equal(fd.get('key'), 'undefined')
       })
 
       it('testFormDataAppendToFormNull1', () => {
-          var fd = new FormData(document.createElement('form'))
-          fd.append('key', null)
-          assert.equal(fd.get('key'), 'null')
+        var fd = new FormData(document.createElement('form'))
+        fd.append('key', null)
+        assert.equal(fd.get('key'), 'null')
       })
 
       it('testFormDataAppendToFormNull2', () => {
-          var fd = new FormData(document.createElement('form'))
-          fd.append('key', null)
-          fd.append('key', 'value1')
-          assert.equal(fd.get('key'), 'null')
+        var fd = new FormData(document.createElement('form'))
+        fd.append('key', null)
+        fd.append('key', 'value1')
+        assert.equal(fd.get('key'), 'null')
       })
 
       it('testFormDataAppendEmptyBlob', () => {
-          var fd = create_formdata(['key', new Blob, 'blank.txt']).get('key')
-          assert.equal(fd.name, 'blank.txt')
-          assert.equal(fd.type, '')
-          assert.equal(fd.size, 0)
+        var fd = createFormData(['key', new Blob(), 'blank.txt']).get('key')
+        assert.equal(fd.name, 'blank.txt')
+        assert.equal(fd.type, '')
+        assert.equal(fd.size, 0)
       })
     })
 
     describe('has', () => {
+      it('throwOnFewArgs', () => {
+        expect(() => {
+          var fd = new FormData()
+          fd.has()
+        }).throw()
+      })
+
       it('FormData.has()', () => {
-        var fd = new FormData
+        var fd = new FormData()
         fd.append('n1', 'value')
         assert.equal(fd.has('n1'), true)
         assert.equal(fd.has('n2'), false)
@@ -122,8 +137,15 @@ window.File = new Proxy(nativeFile, {
     })
 
     describe('delete', () => {
+      it('throwOnFewArgs', () => {
+        expect(() => {
+          var fd = new FormData()
+          fd.delete()
+        }).throw()
+      })
+
       it('FormData.delete()', () => {
-        var fd = new FormData
+        var fd = new FormData()
         fd.append('name', 'value')
         assert.equal(fd.has('name'), true)
         fd.delete('name')
@@ -151,19 +173,19 @@ window.File = new Proxy(nativeFile, {
       // `Object.prototype.toString.call` to return correct type of the polyfilled
       // File constructor
       it('Shold return correct filename with File', () => {
-        const fd = create_formdata(['key', new nativeFile([], 'doc.txt')])
+        const fd = createFormData(['key', new NativeFile([], 'doc.txt')])
         const mockFile = fd.get('key')
         assert.equal('doc.txt', mockFile.name)
       })
 
       it('Shold return correct filename with Blob filename', () => {
-        const fd = create_formdata(['key', new Blob, 'doc.txt'])
+        const fd = createFormData(['key', new Blob(), 'doc.txt'])
         const mockFile = fd.get('key')
         assert.equal('doc.txt', mockFile.name)
       })
 
       it('Shold return correct filename with just Blob', () => {
-        const fd = create_formdata(['key', new Blob])
+        const fd = createFormData(['key', new Blob()])
         const mockFile = fd.get('key')
         assert.equal('blob', mockFile.name)
       })
@@ -207,13 +229,13 @@ window.File = new Proxy(nativeFile, {
       })
 
       it('Should not convert LF to CRLF when provided by append', () => {
-        const fd = create_formdata(['key', '\n'])
+        const fd = createFormData(['key', '\n'])
         const value = fd.get('key')
         assert.equal('\n', value)
       })
 
       it('Should not convert CR to CRLF when provided by append', () => {
-        const fd = create_formdata(['key', '\r'])
+        const fd = createFormData(['key', '\r'])
         const value = fd.get('key')
         assert.equal('\r', value)
       })