Merge branch 'asserts'

4 files changed, 8 insertions, 8 deletions

diff --git a/app/components/Connect.js b/app/components/Connect.js
index d759c994fd..1859fe485e 100644
--- a/app/components/Connect.js
+++ b/app/components/Connect.js
@@ -398,12 +398,12 @@ export default class Connect extends Component {
   }
 
   toLngLat(pos) {
-    assert(pos.length === 2);
+    assert(pos.length === 2, 'wrong number of coordinates in position');
     return [ pos[1], pos[0] ];
   }
 
   toLngLatBounds(bounds) {
-    assert(bounds.length % 2 === 0);
+    assert(bounds.length % 2 === 0, 'wrong number of sides in bounds');
     let result = [];
     for(let i = 0; i < bounds.length; i += 2) {
       result.push(bounds.slice(i, i + 2).reverse());
diff --git a/app/lib/formatters.js b/app/lib/formatters.js
index 6071d87fd5..7fd355efde 100644
--- a/app/lib/formatters.js
+++ b/app/lib/formatters.js
@@ -5,7 +5,7 @@ import assert from 'assert';
  * @param {string} val  account number
  */
 export const formatAccount = (val) => {
-  assert(typeof(val) === 'string');
+  assert(typeof(val) === 'string', 'account number must be a string');
 
   // display number altogether when longer than 12
   if(val.length > 12) {
diff --git a/app/lib/keyframe-animation.js b/app/lib/keyframe-animation.js
index 6f253b9bfd..c765cf5a93 100644
--- a/app/lib/keyframe-animation.js
+++ b/app/lib/keyframe-animation.js
@@ -147,7 +147,7 @@ export default class KeyframeAnimation {
    * @return {KeyframeAnimation}
    */
   static fromFileSequence(filePattern, range) {
-    assert(range.length === 2 && range[0] < range[1]);
+    assert(range.length === 2 && range[0] < range[1], 'the animation range is invalid');
 
     let images = [];
     for(let i = range[0]; i <= range[1]; i++) {
@@ -164,7 +164,7 @@ export default class KeyframeAnimation {
    * @memberOf KeyframeAnimation
    */
   constructor(images) {
-    assert(images.length > 0);
+    assert(images.length > 0, 'too few images in animation');
 
     this._source = images.slice();
     this._nativeImages = images.map((pathOrNativeImage) => {
@@ -213,8 +213,8 @@ export default class KeyframeAnimation {
     let { startFrame, endFrame, beginFromCurrentState, advanceTo } = options;
 
     if(startFrame !== undefined && endFrame !== undefined) {
-      assert(startFrame >= 0 && startFrame < this._numFrames);
-      assert(endFrame >= 0 && endFrame < this._numFrames);
+      assert(startFrame >= 0 && startFrame < this._numFrames, 'start frame is invalid');
+      assert(endFrame >= 0 && endFrame < this._numFrames, 'end frame is invalid');
 
       if(startFrame < endFrame) {
         this._frameRange = [ startFrame, endFrame ];
diff --git a/app/lib/tray-icon-manager.js b/app/lib/tray-icon-manager.js
index 1b0bab3836..8898f7bc48 100644
--- a/app/lib/tray-icon-manager.js
+++ b/app/lib/tray-icon-manager.js
@@ -83,4 +83,4 @@ export default class TrayIconManager {
     this._iconType = type;
   }
 
-}
\ No newline at end of file
+}