Merge pull request #828 from svgdotjs/797-throw-error-in-at

make `at()` method of morphable objects throw when no destination is set (#797)

8 files changed, 8 insertions, 8 deletions

diff --git a/src/array.js b/src/array.js
index ca51d8e..5ce0160 100644
--- a/src/array.js
+++ b/src/array.js
@@ -49,7 +49,7 @@ SVG.extend(SVG.Array, {
   // Get morphed array at given position
   at: function (pos) {
     // make sure a destination is defined
-    if (!this.destination) return this
+    if (!this.destination) throw new Error('No destination set')
 
     // generate morphed array
     for (var i = 0, il = this.value.length, array = []; i < il; i++) {
diff --git a/src/boxes.js b/src/boxes.js
index f0154bd..de96081 100644
--- a/src/boxes.js
+++ b/src/boxes.js
@@ -74,7 +74,7 @@ SVG.Box = SVG.invent({
     },
 
     at: function (pos) {
-      if (!this.destination) return this
+      if (!this.destination) throw new Error('No destination set')
 
       return new SVG.Box(
           this.x + (this.destination.x - this.x) * pos
diff --git a/src/color.js b/src/color.js
index 8f47f70..22b8506 100644
--- a/src/color.js
+++ b/src/color.js
@@ -68,7 +68,7 @@ SVG.extend(SVG.Color, {
   // Get morphed color at given position
   at: function (pos) {
     // make sure a destination is defined
-    if (!this.destination) return this
+    if (!this.destination) throw new Error('No destination set')
 
     // normalise pos
     pos = pos < 0 ? 0 : pos > 1 ? 1 : pos
diff --git a/src/matrix.js b/src/matrix.js
index e823a81..8028b15 100644
--- a/src/matrix.js
+++ b/src/matrix.js
@@ -68,7 +68,7 @@ SVG.Matrix = SVG.invent({
     // Get morphed matrix at a given position
     at: function (pos) {
       // make sure a destination is defined
-      if (!this.destination) return this
+      if (!this.destination) throw new Error('No destination set')
 
       // calculate morphed matrix at a given position
       var matrix = new SVG.Matrix({
diff --git a/src/number.js b/src/number.js
index 6413f94..ba95151 100644
--- a/src/number.js
+++ b/src/number.js
@@ -91,7 +91,7 @@ SVG.Number = SVG.invent({
     // Get morphed number at given position
     at: function (pos) {
       // Make sure a destination is defined
-      if (!this.destination) return this
+      if (!this.destination) throw new Error('No destination set')
 
       // Generate new morphed number
       return new SVG.Number(this.destination)
diff --git a/src/patharray.js b/src/patharray.js
index d9ffecd..ca58513 100644
--- a/src/patharray.js
+++ b/src/patharray.js
@@ -195,7 +195,7 @@ SVG.extend(SVG.PathArray, {
   // Get morphed path array at given position
   at: function (pos) {
     // make sure a destination is defined
-    if (!this.destination) return this
+    if (!this.destination) throw new Error('No destination set')
 
     var sourceArray = this.value
     var destinationArray = this.destination.value
diff --git a/src/point.js b/src/point.js
index 682092e..72a9572 100644
--- a/src/point.js
+++ b/src/point.js
@@ -32,7 +32,7 @@ SVG.Point = SVG.invent({
     // Get morphed point at a given position
     at: function (pos) {
       // make sure a destination is defined
-      if (!this.destination) return this
+      if (!this.destination) throw new Error('No destination set')
 
       // calculate morphed matrix at a given position
       var point = new SVG.Point({
diff --git a/src/pointarray.js b/src/pointarray.js
index ecf5c40..6229e2e 100644
--- a/src/pointarray.js
+++ b/src/pointarray.js
@@ -32,7 +32,7 @@ SVG.extend(SVG.PointArray, {
   // Get morphed array at given position
   at: function (pos) {
     // make sure a destination is defined
-    if (!this.destination) return this
+    if (!this.destination) throw new Error('No destination set')
 
     // generate morphed point string
     for (var i = 0, il = this.value.length, array = []; i < il; i++) {