chore: add gulp link-checker task

also fix some of the broken links that it found

.gitignore

@@ -27,6 +27,4 @@ plnkr.html
 *plnkr.no-link.html
 public/docs/*/latest/guide/cheatsheet.json
 protractor-results.txt
-
+link-checker-results.txt
-
-

gulpfile.js

@@ -23,6 +23,7 @@ var globby = require("globby");
 // Ugh... replacement needed to kill processes on any OS
 // - because childProcess.kill does not work properly on windows
 var treeKill = require("tree-kill");
+var blc = require("broken-link-checker");
 
 // TODO:
 //  1. Think about using runSequence
@@ -424,6 +425,13 @@ gulp.task('test-api-builder', function (cb) {
   execCommands(['npm run test-api-builder'], {}, cb);
 });
 
+// Usage:
+//   angular.io:  gulp link-checker
+//   local site:  gulp link-checker --url=http://localhost:3000
+gulp.task('link-checker', function(done) {
+  return linkChecker();
+});
+
 
 // Internal tasks
 gulp.task('set-prod-env', function () {
@@ -514,6 +522,80 @@ function harpCompile() {
   return deferred.promise;
 }
 
+function linkChecker(options) {
+  var deferred = Q.defer();   
+  var options = options || {};
+  
+  var blcOptions = options.blcOptions || {};
+  var customData = options.customData || {};
+  
+  var excludeBad; // don't bother reporting bad links matching this RegExp
+  if (argv.excludeBad) {
+    excludeBad = new RegExp(argv.excludeBad);
+  } else {
+    excludeBad = options.excludeBad === undefined ? /docs\/dart\/latest\/api/ : '';
+  }
+  
+  var previousPage; 
+  var siteUrl = argv.url || options.url || 'https://angular.io/';
+
+  // See https://github.com/stevenvachon/broken-link-checker#blcsitecheckeroptions-handlers
+  var handlers = {
+    robots: function(robots, customData){},
+    html: function(tree, robots, response, pageUrl, customData){
+      //gutil.log('Scanning ' + pageUrl);docs/ts/latest/api/core/
+    },
+    junk: function(result, customData){},
+    
+    // Analyze links
+    link: function(result, customData){
+      if (!result.broken) { return; }
+      if (excludeBad && excludeBad.test(result.url.resolved)) { return; }
+      
+      var currentPage = result.base.resolved
+      if (previousPage !== currentPage) {
+        previousPage = currentPage;
+        fs.appendFileSync(outputFile, '\n' + currentPage);
+        gutil.log('broken: ' + currentPage);
+      }
+      var msg = '\n  [' + result.html.location.line + ', ' + result.brokenReason + '] ' + result.url.resolved;
+      fs.appendFileSync(outputFile, msg);
+      //gutil.log(msg);
+      //gutil.log(result);
+    },
+    
+    page: function(error, pageUrl, customData){},
+    site: function(error, siteUrl, customData){},
+    
+    end: function(){
+      var stopTime = new Date().getTime();
+      var elapsed = 'Elapsed link-checking time: ' + ((stopTime - startTime)/1000) + ' seconds';
+      gutil.log(elapsed);
+      fs.appendFileSync(outputFile, '\n'+elapsed);
+      gutil.log('Output in file: ' + outputFile);
+      deferred.resolve(true);
+    }
+  };
+ 
+  // create an output file with header.
+  var outputFile = path.join(process.cwd(), 'link-checker-results.txt');
+  var header = 'Link checker results for: ' + siteUrl +
+               '\nStarted: ' + (new Date()).toLocaleString() + 
+               '\nSkipping bad links matching regex: ' +excludeBad.toString() + '\n\n';
+  gutil.log(header);
+  fs.writeFileSync(outputFile, header);
+ 
+  var siteChecker = new blc.SiteChecker(blcOptions, handlers);
+  var startTime = new Date().getTime();
+   
+  try {    
+    siteChecker.enqueue(siteUrl, customData);
+  } catch (err) {
+    deferred.reject(err);
+  }  
+  return deferred.promise;  
+}
+
 // harp has issues with node_modules under the public dir
 // but we need them there for example testing and development
 // this method allows the node modules folder under '_examples'

package.json

@@ -28,6 +28,7 @@
   "devDependencies": {
     "archiver": "^0.16.0",
     "assert-plus": "^0.1.5",
+    "broken-link-checker":"0.7.0",
     "browser-sync": "^2.9.3",
     "canonical-path": "0.0.2",
     "cross-spawn": "^2.1.0",

public/docs/ts/latest/cookbook/a1-a2-quick-reference.jade

@@ -295,7 +295,7 @@ table(width="100%")
         In this example, the `table` element is removed from the DOM unless the `movies` array has a length.
         
         The (*) before `ngIf` is required in this example.
-        For more information see [Structural Directives](../guide/structural-directives).
+        For more information see [Structural Directives](../guide/structural-directives.html).
   tr(style=top)
     td
       :marked
@@ -342,7 +342,7 @@ table(width="100%")
         the (#) identifies `movie` as a local variable;
         the list preposition is `of`, not `in`.
         
-        For more information see [Structural Directives](../guide/structural-directives).
+        For more information see [Structural Directives](../guide/structural-directives.html).
   tr(style=top)
     td
       :marked

public/docs/ts/latest/cookbook/component-communication.jade

@@ -38,7 +38,7 @@ include ../_util-fns
   ## Pass data from parent to child with input binding
   
   `HeroChildComponent` has two ***input properties***, 
-  typically adorned with [@Input decorations](docs/ts/latest/guide/template-syntax.html#inputs-outputs).
+  typically adorned with [@Input decorations](/docs/ts/latest/guide/template-syntax.html#inputs-outputs).
   
 +makeExample('cb-component-communication/ts/app/hero-child.component.ts')
 :marked
@@ -142,7 +142,7 @@ figure.image-display
   The parent binds to that event property and reacts to those events.
   
   The child's `EventEmitter` property is an ***output property***, 
-    typically adorned with an [@Output decoration](docs/ts/latest/guide/template-syntax.html#inputs-outputs)
+    typically adorned with an [@Output decoration](/docs/ts/latest/guide/template-syntax.html#inputs-outputs)
     as seen in this `VoterComponent`:
   
 +makeExample('cb-component-communication/ts/app/voter.component.ts')

public/docs/ts/latest/guide/architecture.jade

@@ -403,7 +403,7 @@ figure
   Here's an example of a service class that logs to the browser console
 +makeExample('architecture/ts/app/logger.service.ts', 'class', 'app/logger.service.ts (class only)')(format=".")
 :marked
-  Here's a `HeroService` that fetches heroes and returns them in a resolved [promise](http://www.html5rocks.com/en/tutorials/es6/promises/). 
+  Here's a `HeroService` that fetches heroes and returns them in a resolved [promise](http://www.2ality.com/2014/10/es6-promises-api.html). 
   The `HeroService` depends on the `LoggerService` and another `BackendService` that handles the server communication grunt work.
 +makeExample('architecture/ts/app/hero.service.ts', 'class', 'app/hero.service.ts (class only)')(format=".")
 :marked

public/docs/ts/latest/guide/forms.jade

@@ -581,7 +581,7 @@ figure.image-display
 .l-sub-section
   :marked
     ### The NgForm directive
-    What `NgForm` directive? We didn't add an [NgForm](../api/core/NgForm-class.html) directive!
+    What `NgForm` directive? We didn't add an [NgForm](../api/common/NgForm-directive.html) directive!
     
     Angular did. Angular creates and attaches an `NgForm` directive to the `<form>` tag automatically.
 

public/docs/ts/latest/guide/pipes.jade

@@ -85,7 +85,7 @@ figure.image-display
 
 .l-sub-section
   :marked
-    Learn more about the `DatePipes` format options in the [API Docs](../api/core/DatePipe-class.html).
+    Learn more about the `DatePipes` format options in the [API Docs](../api/common/DatePipe-class.html).
 :marked
   ## Chaining pipes
   We can chain pipes together in potentially useful combinations.

public/docs/ts/latest/guide/router.jade

@@ -895,7 +895,7 @@ code-example(format="").
   <a id="lifecycle-hooks"></a>
   ### Router Lifecycle Hooks
   Angular components have [lifecycle hooks](lifecycle-hooks.html). For example, Angular calls the hook methods of the
-  [OnInit](../api/core/OnInit-interface.html) and [OnDestroy]((../api/core/OnDestroy-interface.html)
+  [OnInit](../api/core/OnInit-interface.html) and [OnDestroy](../api/core/OnDestroy-interface.html)
   interfaces when it creates and destroys components.
 
   The router calls similar hook methods,
@@ -954,7 +954,7 @@ code-example(format="").
 :marked
   The `DialogService` (injected in the `AppComponent` for app-wide use) does the asking.
   
-  It returns a [promise](http://www.html5rocks.com/en/tutorials/es6/promises/) that
+  It returns a [promise](http://www.2ality.com/2014/10/es6-promises-api.html) that
   *resolves* when the user eventually decides what to do: either
   to discard changes and navigate away (`true`) or to preserve the pending changes and stay in the crisis editor (`false`).
 

public/license

@@ -0,0 +1,21 @@
+The MIT License
+
+Copyright (c) 2014-2016 Google, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.