<Button text="Ciao" @tap="chiama" row="1" height="30" />
    </GridLayout>
  </Page>
</template>

<script >
import { ObservableArray } from "@nativescript/core";
const Api = require("./data/services.js");

var link =
  "http://........................e";

export default {
  data() {
    return {
      items: new ObservableArray(),
    };
  },
  async mounted() {..............},

  computed: {},
  },
  methods: {
    async chiama(){
      const chiamata = new Api();
      await chiamata.services(link);
      this.items = chiamata.getData();
    }
  },
};
</script>


services.js

class Api {
    constructor(url) {
        this.url = url;
    }


    items = [];

    async services(url) {
        try {
            const response = await fetch(url)
            const data = response.json()
            this.items.push(data)
        } catch (e) {
            console.log(e);
        }
    }


    getData() {
        console.log(this.items);
        return this.items;
    }

}


module.exports = Api;