Kill previously keepAlive page instance

Author: jay-patel9

src/Router/index.d.ts

@@ -804,6 +804,11 @@ declare namespace Router {
    */
   export function getActivePage(): Lightning.Component | null;
 
+  /**
+   * Returns the reference of the active Page instance
+   */
+  export function deletePage(param: string): void;
+
   /**
    * Returns the active route path blueprint
    */

src/Router/index.js

@@ -44,6 +44,7 @@ import {
   beforeEachRoute,
   getActiveHash,
   getActiveRoute,
+  deleteCurrentInstance,
 } from './utils/router'
 
 import { focusWidget, getActiveWidget, restoreFocus } from './utils/widgets'
@@ -517,6 +518,10 @@ const root = () => {
   }
 }
 
+const deletePage = (param) => {
+  deleteCurrentInstance(param)
+}
+
 // export API
 export default {
   startRouter,
@@ -530,6 +535,7 @@ export default {
     // warning
     return getActivePage()
   },
+  deletePage,
   getActiveRoute,
   getActiveHash,
   focusWidget,

src/Router/utils/router.js

@@ -122,6 +122,12 @@ export let routes = new Map()
  */
 export let components = new Map()
 
+/**
+ * Copy of components created at boot time
+ * @type {Map<string, object>}
+ */
+export let bootcomponents = new Map()
+
 /**
  * Flag if router has been initialised
  * @type {boolean}
@@ -218,6 +224,7 @@ const setup = config => {
             pagesHost.a(type)
           }
         }
+        bootcomponents.set(path, type)
         components.set(path, type)
       }
     } else {
@@ -299,6 +306,14 @@ export const getComponent = route => {
   }
   return null
 }
+
+// repace the current with boot instance
+export const deleteCurrentInstance = route => {
+  if(bootcomponents.has(route)){
+    components.set(route, bootcomponents.get(route))
+  }
+}
+
 /**
  * Test if router needs to update browser location hash
  * @returns {boolean}