ComponentName.vue

<script lang="ts">
import Vue, { PropTypes } from "vue"

type ComplexObjectInterface = {
  testProp: string
  modelName: number
}

export default Vue.extend({
  props: {
    propExample: {
      // NOTE: This functionality does not exist yet,
      // watch the below Github thread for updates
      // https://github.com/vuejs/vue/pull/6856 
      type: Object as PropTypes<ComplexObjectInterface>
    }
  },
  data() {
    return {
      dataExample: "This Property Will Be Data"
    }
  },
  computed: {
    computedExample(): string {
      return (
        this.dataExample +
        this.propExample.testProp +
        "Computed Property Example"
      )
    }
  },
  methods: {
    methodExample() {
      this.dataExample = "This is being done in a method"
    }
  }
})
</script>