Receiving an error in TypeScript stating that the property or data does not exist on the type for Vue props

I've recently integrated TypeScript into my Vue project, and now I'm encountering an error every time I try to access a value in props or data:

37:46 Property 'activity' does not exist on type '{ props: { activity: { type: ObjectConstructor; required: boolean; }; }; methods: { formatDistance: (distance: number, setting_unit: string) => string; }; mounted: () => void; }'.
    35 |         },
    36 |         mounted: function () {
  > 37 |             var activitymap = L.map('map' + this.activity['activity']['id']).setView([51.505, -0.09], 13)
       |                                              ^

These are my props:

    props: {
        activity: {
            type: Object,
            required: true
        }
    },

And here's the method where it's being used:

    mounted: function () {
        var activitymap = L.map('map' + this.activity['activity']['id']).setView([51.505, -0.09], 13)
        L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token={accessToken}', {
            attribution: '<a href="https://www.openstreetmap.org/">OpenStreetMap</a>',
            maxZoom: 18,
            id: 'mapbox.streets',
            accessToken: process.env.VUE_APP_MAPBOX_KEY
        }).addTo(activitymap)

        var gpxGroup = new L.FeatureGroup();

        activitymap.addLayer(gpxGroup);

        omnivore.gpx(this.activity['activity']['activity_log_url']).addTo(gpxGroup).on('ready',
            function () {
                activitymap.fitBounds(gpxGroup.getBounds());
            }
        )
    }

Do you have any insights on what might be causing this issue?

Answer №1

Is it challenging to integrate TypeScript with VueJS without utilizing vue-class-component? How do you typically define your components - do you use Vue.extend() method?

import Vue from 'vue';
export default Vue.extend({
    props: {
        activity: {
            type: Object,
            required: true
        }
    },
});

Answer №3

After troubleshooting, I successfully resolved the issue in Vue 3 by removing Vetur and replacing it with Volar.

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