account-reconcile/account_reconciliation_widget/views/assets.xml

<?xml version="1.0" encoding="utf-8" ?>
<odoo>
    <template
        id="assets_backend"
        name="account_reconciliation_widget assets"
        inherit_id="web.assets_backend"
    >
        <xpath expr="." position="inside">

            <link
                rel="stylesheet"
                type="text/scss"
                href="/account_reconciliation_widget/static/src/scss/account_reconciliation.scss"
            />

            <script
                type="text/javascript"
                src="/account_reconciliation_widget/static/src/js/reconciliation/reconciliation_action.js"
            />
            <script
                type="text/javascript"
                src="/account_reconciliation_widget/static/src/js/reconciliation/reconciliation_model.js"
            />
            <script
                type="text/javascript"
                src="/account_reconciliation_widget/static/src/js/reconciliation/reconciliation_renderer.js"
            />

        </xpath>
    </template>

    <template id="qunit_suite" name="account tests" inherit_id="web.qunit_suite_tests">
        <xpath expr="." position="inside">

            <script
                type="text/javascript"
                src="/account_reconciliation_widget/static/tests/account_reconciliation_tests.js"
            />

        </xpath>
    </template>
</odoo>