build: more type information for docs

* Upgrades dgeni and dgeni-packages to the latest available version (including TypeScript support; and newer TypeScript version for AST)
* More warnings if type information is missing on public TypeScript symbol
* Adds missing explicit type declarations to all components
* Types are now being displayed for accessors and properties (this was broken before somehow)
* Rewrote the Dgeni setup in TypeScript for type safety and better integration into the gulp workflow.

Author: devversion

package-lock.json

@@ -60,8 +60,8 @@
     "axe-core": "^2.3.1",
     "axe-webdriverjs": "^1.1.1",
     "chalk": "^1.1.3",
-    "dgeni": "^0.4.7",
-    "dgeni-packages": "^0.19.1",
+    "dgeni": "^0.4.9",
+    "dgeni-packages": "^0.21.1",
     "firebase": "^4.0.0",
     "firebase-admin": "^5.0.0",
     "firebase-tools": "^3.9.0",

package.json

@@ -279,7 +279,7 @@ export class FocusTrapFactory {
       private _platform: Platform,
       private _ngZone: NgZone) { }
 
-  create(element: HTMLElement, deferAnchors = false): FocusTrap {
+  create(element: HTMLElement, deferAnchors: boolean = false): FocusTrap {
     return new FocusTrap(element, this._platform, this._checker, this._ngZone, deferAnchors);
   }
 }

src/cdk/a11y/focus-trap.ts

@@ -55,7 +55,7 @@ export class ListKeyManager<T extends ListKeyManagerOption> {
    * Turns on typeahead mode which allows users to set the active item by typing.
    * @param debounceInterval Time to wait after the last keystroke before setting the active item.
    */
-  withTypeAhead(debounceInterval = 200): this {
+  withTypeAhead(debounceInterval: number = 200): this {
     if (this._items.length && this._items.some(item => typeof item.getLabel !== 'function')) {
       throw Error('ListKeyManager items in typeahead mode must implement the `getLabel` method.');
     }

src/cdk/a11y/list-key-manager.ts

@@ -27,7 +27,7 @@ import {RxChain, debounceTime} from '@angular/cdk/rxjs';
  */
 @Injectable()
 export class MdMutationObserverFactory {
-  create(callback): MutationObserver | null {
+  create(callback: MutationCallback): MutationObserver | null {
     return typeof MutationObserver === 'undefined' ? null : new MutationObserver(callback);
   }
 }

src/cdk/observers/observe-content.ts

@@ -81,7 +81,7 @@ export class ConnectedPositionStrategy implements PositionStrategy {
   }
 
   /** Ordered list of preferred positions, from most to least desirable. */
-  get positions() {
+  get positions(): ConnectionPositionPair[] {
     return this._preferredPositions;
   }
 

src/cdk/overlay/position/connected-position-strategy.ts

@@ -41,7 +41,7 @@ export class GlobalPositionStrategy implements PositionStrategy {
    * Sets the top position of the overlay. Clears any previously set vertical position.
    * @param value New top offset.
    */
-  top(value = ''): this {
+  top(value: string = ''): this {
     this._bottomOffset = '';
     this._topOffset = value;
     this._alignItems = 'flex-start';
@@ -52,7 +52,7 @@ export class GlobalPositionStrategy implements PositionStrategy {
    * Sets the left position of the overlay. Clears any previously set horizontal position.
    * @param value New left offset.
    */
-  left(value = ''): this {
+  left(value: string = ''): this {
     this._rightOffset = '';
     this._leftOffset = value;
     this._justifyContent = 'flex-start';
@@ -63,7 +63,7 @@ export class GlobalPositionStrategy implements PositionStrategy {
    * Sets the bottom position of the overlay. Clears any previously set vertical position.
    * @param value New bottom offset.
    */
-  bottom(value = ''): this {
+  bottom(value: string = ''): this {
     this._topOffset = '';
     this._bottomOffset = value;
     this._alignItems = 'flex-end';
@@ -74,7 +74,7 @@ export class GlobalPositionStrategy implements PositionStrategy {
    * Sets the right position of the overlay. Clears any previously set horizontal position.
    * @param value New right offset.
    */
-  right(value = ''): this {
+  right(value: string = ''): this {
     this._leftOffset = '';
     this._rightOffset = value;
     this._justifyContent = 'flex-end';
@@ -85,7 +85,7 @@ export class GlobalPositionStrategy implements PositionStrategy {
    * Sets the overlay width and clears any previously set width.
    * @param value New width for the overlay
    */
-  width(value = ''): this {
+  width(value: string = ''): this {
     this._width = value;
 
     // When the width is 100%, we should reset the `left` and the offset,
@@ -101,7 +101,7 @@ export class GlobalPositionStrategy implements PositionStrategy {
    * Sets the overlay height and clears any previously set height.
    * @param value New height for the overlay
    */
-  height(value = ''): this {
+  height(value: string = ''): this {
     this._height = value;
 
     // When the height is 100%, we should reset the `top` and the offset,
@@ -119,7 +119,7 @@ export class GlobalPositionStrategy implements PositionStrategy {
    *
    * @param offset Overlay offset from the horizontal center.
    */
-  centerHorizontally(offset = ''): this {
+  centerHorizontally(offset: string = ''): this {
     this.left(offset);
     this._justifyContent = 'center';
     return this;
@@ -131,7 +131,7 @@ export class GlobalPositionStrategy implements PositionStrategy {
    *
    * @param offset Overlay offset from the vertical center.
    */
-  centerVertically(offset = ''): this {
+  centerVertically(offset: string = ''): this {
     this.top(offset);
     this._alignItems = 'center';
     return this;

src/cdk/overlay/position/global-position-strategy.ts

@@ -26,7 +26,7 @@ export class ViewportRuler {
   }
 
   /** Gets a ClientRect for the viewport's bounds. */
-  getViewportRect(documentRect = this._documentRect): ClientRect {
+  getViewportRect(documentRect: ClientRect | undefined = this._documentRect): ClientRect {
     // Cache the document bounding rect so that we don't recompute it for multiple calls.
     if (!documentRect) {
       this._cacheViewportGeometry();
@@ -61,7 +61,7 @@ export class ViewportRuler {
    * Gets the (top, left) scroll position of the viewport.
    * @param documentRect
    */
-  getViewportScrollPosition(documentRect = this._documentRect) {
+  getViewportScrollPosition(documentRect: ClientRect | undefined = this._documentRect) {
     // Cache the document bounding rect so that we don't recompute it for multiple calls.
     if (!documentRect) {
       this._cacheViewportGeometry();

src/cdk/scrolling/viewport-ruler.ts

@@ -93,7 +93,7 @@ export class MdButtonToggleGroup extends _MdButtonToggleGroupMixinBase
   _controlValueAccessorChangeFn: (value: any) => void = () => {};
 
   /** onTouch function registered via registerOnTouch (ControlValueAccessor). */
-  onTouched: () => any = () => {};
+  _onTouched: () => any = () => {};
 
   /** Child button toggle buttons. */
   @ContentChildren(forwardRef(() => MdButtonToggle)) _buttonToggles: QueryList<MdButtonToggle>;
@@ -214,7 +214,7 @@ export class MdButtonToggleGroup extends _MdButtonToggleGroupMixinBase
    * @param fn On touch callback function.
    */
   registerOnTouched(fn: any) {
-    this.onTouched = fn;
+    this._onTouched = fn;
   }
 
   /**
@@ -427,7 +427,7 @@ export class MdButtonToggle implements OnInit, OnDestroy {
       let groupValueChanged = this.buttonToggleGroup.selected != this;
       this.checked = true;
       this.buttonToggleGroup.selected = this;
-      this.buttonToggleGroup.onTouched();
+      this.buttonToggleGroup._onTouched();
       if (groupValueChanged) {
         this.buttonToggleGroup._emitChangeEvent();
       }

src/lib/button-toggle/button-toggle.ts

@@ -41,7 +41,7 @@ export class MdChipInput {
    * Whether or not the chipEnd event will be emitted when the input is blurred.
    */
   @Input('mdChipInputAddOnBlur')
-  get addOnBlur() { return this._addOnBlur; }
+  get addOnBlur(): boolean { return this._addOnBlur; }
   set addOnBlur(value) { this._addOnBlur = coerceBooleanProperty(value); }
   _addOnBlur: boolean = false;
 
@@ -61,7 +61,7 @@ export class MdChipInput {
   set matChipList(value: MdChipList) { this.chipList = value; }
 
   @Input('matChipInputAddOnBlur')
-  get matAddOnBlur() { return this._addOnBlur; }
+  get matAddOnBlur(): boolean { return this._addOnBlur; }
   set matAddOnBlur(value) { this.addOnBlur = value; }
 
   @Input('matChipInputSeparatorKeyCodes')