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uBlock/src/js/scriptlets/load-3p-css.js

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/*******************************************************************************
uBlock Origin - a browser extension to block requests.
Copyright (C) 2020-present Raymond Hill
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see {http://www.gnu.org/licenses/}.
Home: https://github.com/gorhill/uBlock
*/
'use strict';
/******************************************************************************/
(( ) => {
if ( typeof vAPI !== 'object' ) { return; }
if ( vAPI.load3rdPartyCSS ) { return; }
vAPI.load3rdPartyCSS = true;
const links = document.querySelectorAll('link[rel="stylesheet"]');
if ( links.length === 0 ) { return; }
const toLoadMaybe = new Map(Array.from(links).map(a => [ a.href, a ]));
for ( const sheet of Array.from(document.styleSheets) ) {
let loaded = false;
try {
loaded = sheet.rules.length !== 0;
} catch(ex) {
}
if ( loaded ) { continue; }
const link = toLoadMaybe.get(sheet.href);
if ( link === undefined ) { continue; }
toLoadMaybe.delete(sheet.href);
const clone = link.cloneNode(true);
link.replaceWith(clone);
}
})();
/*******************************************************************************
DO NOT:
- Remove the following code
- Add code beyond the following code
Reason:
- https://github.com/gorhill/uBlock/pull/3721
- uBO never uses the return value from injected content scripts
**/
void 0;