fix(b-collapse): fix memory leak from $root listener (fixes #3607) (#3608)

tmorehouse · web-flow · commit 10cb3a9bda50 · 2019-07-01T20:00:09.000-03:00
diff --git a/src/components/collapse/collapse.js b/src/components/collapse/collapse.js
@@ -104,7 +104,7 @@ export const BCollapse = /*#__PURE__*/ Vue.extend({
       this.emitState()
     })
     // Listen for "Sync state" requests from `v-b-toggle`
-    this.$root.$on(EVENT_STATE_REQUEST, id => {
+    this.listenOnRoot(EVENT_STATE_REQUEST, id => {
       if (id === this.id) {
         this.$nextTick(this.emitSync)
       }

Original file line number	Diff line number	Diff line change
`@@ -104,7 +104,7 @@ export const BCollapse = /#__PURE__/ Vue.extend({`
`104`	`104`	`this.emitState()`
`105`	`105`	`})`
`106`	`106`	// Listen for "Sync state" requests from `v-b-toggle`
`107`		`- this.$root.$on(EVENT_STATE_REQUEST, id => {`
	`107`	`+ this.listenOnRoot(EVENT_STATE_REQUEST, id => {`
`108`	`108`	`if (id === this.id) {`
`109`	`109`	`this.$nextTick(this.emitSync)`
`110`	`110`	`}`