salix/print/templates/email/payment-update/payment-update.js

const Component = require(`vn-print/core/component`);
const emailHeader = new Component('email-header');
const emailFooter = new Component('email-footer');

module.exports = {
    name: 'payment-update',
    async serverPrefetch() {
        this.payMethod = await this.fetchPayMethod(this.id);

        if (!this.payMethod)
            throw new Error('Something went wrong');
    },
    computed: {
        accountAddress: function() {
            return this.payMethod.iban.slice(-4);
        },
    },
    methods: {
        fetchPayMethod(id) {
            return this.findOneFromDef('payMethod', [id]);
        }
    },
    components: {
        'email-header': emailHeader.build(),
        'email-footer': emailFooter.build()
    },
    props: {
        id: {
            type: [Number, String],
            required: true,
            description: 'The client id'
        }
    }
};