lighthouse
Version:
Automated auditing, performance metrics, and best practices for the web.
26 lines (22 loc) • 697 B
JavaScript
/**
* @license
* Copyright 2021 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
/* eslint-env browser */
/** @typedef {import('./dom.js').DOM} DOM */
/**
* @param {DOM} dom
* @param {boolean} [force]
*/
export function toggleDarkTheme(dom, force) {
const el = dom.rootEl;
// This seems unnecessary, but in DevTools, passing "undefined" as the second
// parameter acts like passing "false".
// https://github.com/ChromeDevTools/devtools-frontend/blob/dd6a6d4153647c2a4203c327c595692c5e0a4256/front_end/dom_extension/DOMExtension.js#L809-L819
if (typeof force === 'undefined') {
el.classList.toggle('lh-dark');
} else {
el.classList.toggle('lh-dark', force);
}
}