@lwc/jest-resolver/resources/emptyStyleMock.js

Jest resolver to resolve LWC specific packages

/*
 * Copyright (c) 2018, salesforce.com, inc.
 * All rights reserved.
 * SPDX-License-Identifier: MIT
 * For full license text, see the LICENSE file in the repo root or https://opensource.org/licenses/MIT
 */
// CSS file returned by @lwc/jest-resolver. Since Jest/JSDOM doesn't really support CSS,
// we always return a stub.
module.exports = []; // empty array of stylesheets