JS Compilation warnings

[jonathancross]

Per:

curl -d 'code_url=https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js' -d 'output_info=warnings' -d 'compilation_level=ADVANCED_OPTIMIZATIONS' https://closure-compiler.appspot.com/compile

https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:171: WARNING - inconsistent return type
found   : Element
required: HTMLUListElement
  return slideShowButtons;
         ^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:187: WARNING - inconsistent return type
found   : Element
required: HTMLButtonElement
  return button;
         ^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:257: WARNING - element appendChild does not exist on this enum
  this.contentContainer_.appendChild(this.nodes_.domFragment);
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:326: WARNING - Property fileName never defined on Image
  this.nodes_.fileNameEl.textContent = selectedImage.fileName;
                                                     ^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:336: WARNING - Property href never defined on Image
  this.nodes_.imageEl.src = selectedImage.href;
                                          ^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:352: WARNING - actual parameter 1 of jcd.SlideShow.prototype.loadImage does not match formal parameter
found   : Image
required: jcd.File
    this.loadImage(this.imageManager.getSelectedImage());
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:377: WARNING - actual parameter 1 of jcd.SlideShow.prototype.loadImage does not match formal parameter
found   : Image
required: jcd.File
  this.loadImage(this.imageManager.getNextImage());
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:386: WARNING - actual parameter 1 of jcd.SlideShow.prototype.loadImage does not match formal parameter
found   : Image
required: jcd.File
  this.loadImage(this.imageManager.getPreviousImage());
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:410: WARNING - actual parameter 1 of jcd.SlideShow.prototype.loadImage does not match formal parameter
found   : Image
required: jcd.File
  this.loadImage(this.imageManager.getSelectedImage());
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:438: WARNING - Function jcd.FileList.prototype.getFiles: called with 1 argument(s). Function requires at least 0 argument(s) and no more than 0 argument(s).
  this.files = this.getFiles(this.container);
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:488: WARNING - inconsistent return type
found   : number
required: Image
  return this.selectedIndex_;
         ^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:528: WARNING - Property updateCounter never defined on jcd.ImageManager
  this.updateCounter();
       ^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:609: WARNING - assignment to property selectedImage_ of jcd.ImageManager
found   : jcd.File
required: Image
        this.selectedImage_ = file;
        ^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:676: WARNING - assignment to property bind of Function.prototype
found   : function(this:Function, Object, ...*): Function
required: function(this:Function, (Object|null|undefined), ...*): Function
  Function.prototype.bind = function (oThis) {
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:676: WARNING - variable Function.prototype.bind redefined with type function(this:Function, Object, ...*): Function, original definition at http://closure-compiler.appspot.com/externs.js:2192 with type function(this:Function, (Object|null|undefined), ...*): Function
  Function.prototype.bind = function (oThis) {
  ^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:692: WARNING - cannot instantiate non-constructor
    fBound.prototype = new fNOP();
                       ^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:709: WARNING - Bad type annotation. expected closing } See https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation for more information.
 * @param {!Function()} func Callback.
                    ^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:709: WARNING - Bad type annotation. expecting a variable name in a @param tag. See https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation for more information.
 * @param {!Function()} func Callback.
                    ^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:813: WARNING - assignment to property nextImgEl_ of jcd.Page
found   : (Element|null)
required: Image
  this.nextImgEl_ = document.getElementById(this.elementIds_.NEXT);
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:814: WARNING - assignment to property prevImgEl_ of jcd.Page
found   : (Element|null)
required: Image
  this.prevImgEl_ = document.getElementById(this.elementIds_.PREV);
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:858: WARNING - assignment to property fileListContainer_ of jcd.Page
found   : (Element|null)
required: Element
  this.fileListContainer_ = document.getElementById(this.elementIds_.FILES);
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
https://raw.githubusercontent.com/jonathancross/pics.jonathancross.com/master/jcdsee/jcdsee.js:872: WARNING - actual parameter 1 of jcd.utils.addEvent does not match formal parameter
found   : Window
required: Element
    jcd.utils.addEvent(window, 'load', this.cacheNextPrev.bind(this));
                       ^^^^^^