Actually added the linter to gulp and fixed most errors

This commit fixes most of the errors raised by standard.
There is still a strange call error, but that will be the
focus of the next commit

21 files changed, 47 insertions, 18 deletions

diff --git a/src/HtmlNode.js b/src/HtmlNode.js
index 37a231c..6d253a8 100644
--- a/src/HtmlNode.js
+++ b/src/HtmlNode.js
@@ -1,3 +1,5 @@
+/* global createElement */
+
 SVG.HtmlNode = SVG.invent({
   create: function (element) {
     this.node = element
diff --git a/src/array.js b/src/array.js
index 0a1dd5a..ca51d8e 100644
--- a/src/array.js
+++ b/src/array.js
@@ -1,3 +1,5 @@
+/* global arrayClone */
+
 // Module for array conversion
 SVG.Array = function (array, fallback) {
   array = (array || []).valueOf()
diff --git a/src/boxes.js b/src/boxes.js
index 7975ac8..a5ca1e8 100644
--- a/src/boxes.js
+++ b/src/boxes.js
@@ -1,3 +1,5 @@
+/* globals fullBox, domContains, isNulledBox, Exception */
+
 SVG.Box = SVG.invent({
   create: function (source) {
     var base = [0, 0, 0, 0]
diff --git a/src/color.js b/src/color.js
index 9106355..8f47f70 100644
--- a/src/color.js
+++ b/src/color.js
@@ -1,3 +1,5 @@
+/* globals fullHex, compToHex */
+
 // Module for color convertions
 SVG.Color = function (color) {
   var match
diff --git a/src/css.js b/src/css.js
index f710a77..c549bd5 100644
--- a/src/css.js
+++ b/src/css.js
@@ -1,3 +1,5 @@
+/* global camelCase */
+
 SVG.extend(SVG.Element, {
   // Dynamic style generator
   css: function (s, v) {
diff --git a/src/element.js b/src/element.js
index 48173fd..b9feec1 100644
--- a/src/element.js
+++ b/src/element.js
@@ -1,3 +1,4 @@
+/* global proportionalSize, assignNewId, createElement, matches, is */
 
 SVG.Element = SVG.invent({
   // Initialize node
diff --git a/src/ellipse.js b/src/ellipse.js
index 42d772a..eb310f9 100644
--- a/src/ellipse.js
+++ b/src/ellipse.js
@@ -1,3 +1,5 @@
+/* global proportionalSize */
+
 SVG.Circle = SVG.invent({
   // Initialize node
   create: 'circle',
diff --git a/src/fx.js b/src/fx.js
index c944834..a09b0a5 100644
--- a/src/fx.js
+++ b/src/fx.js
@@ -864,7 +864,7 @@ SVG.extend(SVG.FX, {
       return this.plot([a, b, c, d])
     }
 
-    return this.add('plot', new (this.target().morphArray)(a))
+    return this.add('plot', new (this.target().MorphArray)(a))
   },
   // Add leading method
   leading: function (value) {
diff --git a/src/helpers.js b/src/helpers.js
index 9fa87eb..9a7f47e 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -1,3 +1,5 @@
+/* eslint no-unused-vars: 0 */
+
 function createElement (element, makeNested) {
   if (element instanceof SVG.Element) return element
 
diff --git a/src/line.js b/src/line.js
index 67fa96b..b147218 100644
--- a/src/line.js
+++ b/src/line.js
@@ -1,3 +1,5 @@
+/* global proportionalSize */
+
 SVG.Line = SVG.invent({
   // Initialize node
   create: 'line',
diff --git a/src/matrix.js b/src/matrix.js
index 83d0aaa..6e918d8 100644
--- a/src/matrix.js
+++ b/src/matrix.js
@@ -1,3 +1,5 @@
+/* global abcdef, arrayToMatrix, deltaTransformPoint, parseMatrix */
+
 SVG.Matrix = SVG.invent({
   // Initialize
   create: function (source) {
@@ -7,15 +9,16 @@ SVG.Matrix = SVG.invent({
     // ensure source as object
     source = source instanceof SVG.Element ? source.matrixify()
       : typeof source === 'string' ? arrayToMatrix(source.split(SVG.regex.delimiter).map(parseFloat))
-      : arguments.length == 6 ? arrayToMatrix([].slice.call(arguments))
+      : arguments.length === 6 ? arrayToMatrix([].slice.call(arguments))
       : Array.isArray(source) ? arrayToMatrix(source)
       : typeof source === 'object' ? source
       : base
 
     // merge source
     for (i = abcdef.length - 1; i >= 0; --i) {
-      this[abcdef[i]] = source[abcdef[i]] != null ?
-        source[abcdef[i]] : base[abcdef[i]]
+      this[abcdef[i]] = source[abcdef[i]] != null
+        ? source[abcdef[i]]
+        : base[abcdef[i]]
     }
   },
 
@@ -190,7 +193,5 @@ SVG.Matrix = SVG.invent({
       }
       return new SVG.Matrix(this.node.getScreenCTM())
     }
-
   }
-
 })
diff --git a/src/parent.js b/src/parent.js
index 4583ebf..94523f2 100644
--- a/src/parent.js
+++ b/src/parent.js
@@ -1,3 +1,5 @@
+/* global createElement */
+
 SVG.Parent = SVG.invent({
   // Initialize node
   create: function (node) {
diff --git a/src/path.js b/src/path.js
index 041027b..db3929b 100644
--- a/src/path.js
+++ b/src/path.js
@@ -1,3 +1,5 @@
+/* global proportionalSize */
+
 SVG.Path = SVG.invent({
   // Initialize node
   create: 'path',
@@ -8,7 +10,7 @@ SVG.Path = SVG.invent({
   // Add class methods
   extend: {
     // Define morphable array
-    morphArray: SVG.PathArray,
+    MorphArray: SVG.PathArray,
     // Get array
     array: function () {
       return this._array || (this._array = new SVG.PathArray(this.attr('d')))
diff --git a/src/patharray.js b/src/patharray.js
index d1b9420..d9ffecd 100644
--- a/src/patharray.js
+++ b/src/patharray.js
@@ -1,3 +1,5 @@
+/* globals arrayToString, pathRegReplace */
+
 var pathHandlers = {
   M: function (c, p, p0) {
     p.x = p0.x = c[0]
@@ -229,9 +231,7 @@ SVG.extend(SVG.PathArray, {
     if (array instanceof SVG.PathArray) return array.valueOf()
 
     // prepare for parsing
-    var i, x0, y0, s, seg, arr
-    var x = 0
-    var y = 0
+    var s
     var paramCnt = { 'M': 2, 'L': 2, 'H': 1, 'V': 1, 'C': 6, 'S': 4, 'Q': 4, 'T': 2, 'A': 7, 'Z': 0 }
 
     if (typeof array === 'string') {
diff --git a/src/pointarray.js b/src/pointarray.js
index 3941705..ecf5c40 100644
--- a/src/pointarray.js
+++ b/src/pointarray.js
@@ -104,7 +104,7 @@ SVG.extend(SVG.PointArray, {
 
     return this
   },
-  
+
   // Get bounding box of points
   bbox: function () {
     var maxX = -Infinity
diff --git a/src/pointed.js b/src/pointed.js
index 901b87b..6493964 100644
--- a/src/pointed.js
+++ b/src/pointed.js
@@ -1,7 +1,7 @@
 // unify all point to point elements
 SVG.extend([SVG.Line, SVG.Polyline, SVG.Polygon], {
   // Define morphable array
-  morphArray: SVG.PointArray,
+  MorphArray: SVG.PointArray,
   // Move by left top corner over x-axis
   x: function (x) {
     return x == null ? this.bbox().x : this.move(x, this.bbox().y)
diff --git a/src/poly.js b/src/poly.js
index db29797..9625776 100644
--- a/src/poly.js
+++ b/src/poly.js
@@ -1,3 +1,5 @@
+/* global proportionalSize */
+
 SVG.Polyline = SVG.invent({
   // Initialize node
   create: 'polyline',
diff --git a/src/selector.js b/src/selector.js
index 8627521..b4ea05f 100644
--- a/src/selector.js
+++ b/src/selector.js
@@ -1,3 +1,5 @@
+/* global idFromReference */
+
 // Method for getting an element by id
 SVG.get = function (id) {
   var node = document.getElementById(idFromReference(id) || id)
diff --git a/src/textpath.js b/src/textpath.js
index 8362940..561f147 100644
--- a/src/textpath.js
+++ b/src/textpath.js
@@ -10,7 +10,7 @@ SVG.TextPath = SVG.invent({
 
   // Add parent method
   extend: {
-    morphArray: SVG.PathArray,
+    MorphArray: SVG.PathArray,
     // return the array of the path track element
     array: function () {
       var track = this.track()
diff --git a/src/transform.js b/src/transform.js
index b6beb0d..54e9900 100644
--- a/src/transform.js
+++ b/src/transform.js
@@ -1,3 +1,4 @@
+/* global ensureCentre, capitalize, arrayToMatrix */
 
 SVG.extend(SVG.Element, {
   // Add transformations
@@ -65,8 +66,8 @@ SVG.extend(SVG.Element, {
 
       if (!relative) {
         // absolute; reset skew values
-        var e = matrix.extract()
-        matrix = matrix.multiply(new SVG.Matrix().skew(e.skewX, e.skewY, o.cx, o.cy).inverse())
+        var el = matrix.extract()
+        matrix = matrix.multiply(new SVG.Matrix().skew(el.skewX, el.skewY, el.cx, el.cy).inverse())
       }
 
       matrix = matrix.skew(o.skewX, o.skewY, o.cx, o.cy)
@@ -227,15 +228,16 @@ SVG.Transformation = SVG.invent({
 
   create: function (source, inversed) {
     if (arguments.length > 1 && typeof inversed !== 'boolean') {
-      return this.constructor.call(this, [].slice.call(arguments))
+      return this.constructor.bind(this)([].slice.call(arguments))
     }
 
+    var i, len
     if (Array.isArray(source)) {
-      for (var i = 0, len = this.arguments.length; i < len; ++i) {
+      for (i = 0, len = this.arguments.length; i < len; ++i) {
         this[this.arguments[i]] = source[i]
       }
     } else if (typeof source === 'object') {
-      for (var i = 0, len = this.arguments.length; i < len; ++i) {
+      for (i = 0, len = this.arguments.length; i < len; ++i) {
         this[this.arguments[i]] = source[this.arguments[i]]
       }
     }
diff --git a/src/use.js b/src/use.js
index 02bee12..2b8e65e 100644
--- a/src/use.js
+++ b/src/use.js
@@ -1,3 +1,4 @@
+
 SVG.Use = SVG.invent({
   // Initialize node
   create: 'use',