# vue/no-deprecated-events-api
disallow using deprecated events api (in Vue.js 3.0.0+)
- ⚙️ This rule is included in all of
"plugin:vue/vue3-essential","plugin:vue/vue3-strongly-recommended"and"plugin:vue/vue3-recommended".
# 📖 Rule Details
This rule reports use of deprecated $on, $off $once api. (in Vue.js 3.0.0+).
See Migration Guide - Events API (opens new window) for more details.
<script>
/* ✗ BAD */
export default {
mounted () {
this.$on('start', function(args) {
console.log('start')
})
this.$emit('start')
}
}
</script>
<script>
/* ✓ GOOD */
import mitt from 'mitt'
const emitter = mitt()
export default {
mounted () {
emitter.on('start', function(args) {
console.log('start')
})
emitter.emit('start')
}
}
</script>
# 🔧 Options
Nothing.
# 📚 Further Reading
- Migration Guide - Events API (opens new window)
- Vue RFCs - 0020-events-api-change (opens new window)
# 🚀 Version
This rule was introduced in eslint-plugin-vue v7.0.0