docs(optional): add syntax to flag params as optional

scripts/docs/dgeni-config.js

@@ -24,6 +24,7 @@ module.exports = function(currentVersion, initialVersionBuild) {
 .processor(require('./processors/hide-private-api'))
 .processor(require('./processors/collect-inputs-outputs'))
 .processor(require('./processors/parse-returns-object'))
+.processor(require('./processors/parse-optional'))
 
 // for debugging docs
 // .processor(function test(){

scripts/docs/processors/parse-optional.js

@@ -0,0 +1,21 @@
+module.exports = function parseOptional() {
+  return {
+    $runBefore: ['rendering-docs'],
+    $process: function(docs) {
+      docs.forEach(function(doc) {
+        if(doc.members && doc.members.length) {
+          for (var i in doc.members) {
+            if(doc.members[i].params && doc.members[i].params.length) {
+              for (var ii in doc.members[i].params) {
+                if(doc.members[i].params[ii].optional){
+                  doc.members[i].params[ii].description += '<strong class="tag">Optional</strong>';
+                }
+              }
+            }
+          }
+        }
+      });
+      return docs;
+    }
+  }
+};

src/components/slides/slides.ts

@@ -743,8 +743,8 @@ export class Slides extends Ion {
    * Transition to the specified slide.
    *
    * @param {number} index  The index number of the slide.
-   * @param {number} speed  Transition duration (in ms). Optional.
-   * @param {boolean} runCallbacks  Whether or not to emit the `ionWillChange`/`ionDidChange` events. Optional. Default true.
+   * @param {number} [speed]  Transition duration (in ms).
+   * @param {boolean} [runCallbacks] Whether or not to emit the `ionWillChange`/`ionDidChange` events. Default true.
    */
   slideTo(index: number, speed?: number, runCallbacks?: boolean) {
     this.slider.slideTo(index, speed, runCallbacks);
@@ -753,8 +753,8 @@ export class Slides extends Ion {
   /**
    * Transition to the next slide.
    *
-   * @param {number} speed  Transition duration (in ms). Optional.
-   * @param {boolean} runCallbacks  Whether or not to emit the `ionWillChange`/`ionDidChange` events. Optional. Default true.
+   * @param {number} [speed]  Transition duration (in ms).
+   * @param {boolean} [runCallbacks]  Whether or not to emit the `ionWillChange`/`ionDidChange` events. Default true.
    */
   slideNext(speed?: number, runCallbacks?: boolean) {
     this.slider.slideNext(runCallbacks, speed);
@@ -763,8 +763,8 @@ export class Slides extends Ion {
   /**
    * Transition to the previous slide.
    *
-   * @param {number} speed  Transition duration (in ms). Optional.
-   * @param {boolean} runCallbacks  Whether or not to emit the `ionWillChange`/`ionDidChange` events. Optional. Default true.
+   * @param {number} [speed]  Transition duration (in ms).
+   * @param {boolean} [runCallbacks]  Whether or not to emit the `ionWillChange`/`ionDidChange` events. Default true.
    */
   slidePrev(speed?: number, runCallbacks?: boolean) {
     this.slider.slidePrev(runCallbacks, speed);