naive-ui/demo/documentation/components/message/enUS/timing.md

Timing

Specify the duration of messages.

<n-button @click="emitInfo">
  Last for 5 second
</n-button>

export default {
  data() {
    return {}
  },
  methods: {
    emitInfo() {
      this.$NMessage.info(
        "I don't know why nobody told you how to unfold your love",
        { duration: 5000 }
      )
    }
  }
}