salix/print/templates/reports/exportation/exportation.js

const Component = require(`${appPath}/core/component`);
const reportHeader = new Component('report-header');
const reportFooter = new Component('report-footer');

module.exports = {
    name: 'exportation',
    async serverPrefetch() {
        this.invoice = await this.fetchInvoice(this.invoiceId);

        if (!this.invoice)
            throw new Error('Something went wrong');
    },
    methods: {
        fetchInvoice(invoiceId) {
            return this.findOneFromDef('invoice', [invoiceId]);
        }
    },
    computed: {
        issued: function() {
            const filters = this.$options.filters;

            return filters.date(this.invoice.issued, '%d-%m-%Y');
        }
    },
    components: {
        'report-header': reportHeader.build(),
        'report-footer': reportFooter.build()
    },
    props: {
        invoiceId: {
            type: [Number, String],
            required: true
        }
    }
};