salix/print/templates/email/campaign-metrics/campaign-metrics.js

const Component = require(`${appPath}/core/component`);
const emailHeader = new Component('email-header');
const emailFooter = new Component('email-footer');

module.exports = {
    name: 'campaign-metrics',

    components: {
        'email-header': emailHeader.build(),
        'email-footer': emailFooter.build()
    },
    props: {
        recipientId: {
            required: true
        },
        from: {
            required: true
        },
        to: {
            required: true
        }
    }
};