vlocity-lwc-examples/force-app/main/default/lwc/lightningCardComponent/lightningCardComponent.js

import { LightningElement, api } from 'lwc';

export default class LightningCardComponent extends LightningElement {
    @api title = 'Default Title';
    @api body = 'Default Body';
    @api link = 'Default Link';

    connectedCallback() {
        console.log('LightningCardComponent - connected');
    }
}