fix(warn): only warn if "tag" or "event" is used (#3458)

jonaskuske · web-flow · commit b7a31b9bd6f3 · 2021-01-26T10:19:30.000+01:00
closes #3457
diff --git a/src/components/link.js b/src/components/link.js
@@ -132,14 +132,14 @@ export default {
     }
 
     if (process.env.NODE_ENV !== 'production') {
-      if (this.tag && !warnedTagProp) {
+      if ('tag' in this.$options.propsData && !warnedTagProp) {
         warn(
           false,
           `<router-link>'s tag prop is deprecated and has been removed in Vue Router 4. Use the v-slot API to remove this warning: https://next.router.vuejs.org/guide/migration/#removal-of-event-and-tag-props-in-router-link.`
         )
         warnedTagProp = true
       }
-      if (this.event && !warnedEventProp) {
+      if ('event' in this.$options.propsData && !warnedEventProp) {
         warn(
           false,
           `<router-link>'s event prop is deprecated and has been removed in Vue Router 4. Use the v-slot API to remove this warning: https://next.router.vuejs.org/guide/migration/#removal-of-event-and-tag-props-in-router-link.`

Original file line number	Diff line number	Diff line change
`@@ -132,14 +132,14 @@ export default {`
`132`	`132`	`}`
`133`	`133`
`134`	`134`	`if (process.env.NODE_ENV !== 'production') {`
`135`		`- if (this.tag && !warnedTagProp) {`
	`135`	`+ if ('tag' in this.$options.propsData && !warnedTagProp) {`
`136`	`136`	`warn(`
`137`	`137`	`false,`
`138`	`138`	`<router-link>'s tag prop is deprecated and has been removed in Vue Router 4. Use the v-slot API to remove this warning: https://next.router.vuejs.org/guide/migration/#removal-of-event-and-tag-props-in-router-link.`
`139`	`139`	`)`
`140`	`140`	`warnedTagProp = true`
`141`	`141`	`}`
`142`		`- if (this.event && !warnedEventProp) {`
	`142`	`+ if ('event' in this.$options.propsData && !warnedEventProp) {`
`143`	`143`	`warn(`
`144`	`144`	`false,`
`145`	`145`	`<router-link>'s event prop is deprecated and has been removed in Vue Router 4. Use the v-slot API to remove this warning: https://next.router.vuejs.org/guide/migration/#removal-of-event-and-tag-props-in-router-link.`