Function prepareOverridesSheet

src/inject/dynamic-theme/style-manager.ts:400–431

()

        }

        function prepareOverridesSheet(): CSSStyleSheet {
            if (!syncStyle) {
                createSyncStyle();
            }

            syncStylePositionWatcher && syncStylePositionWatcher.stop();
            insertStyle();

            // Firefox issue: Some websites get CSP warning,
            // when `textContent` is not set (e.g. pypi.org).
            // But for other websites (e.g. facebook.com)
            // some images disappear when `textContent`
            // is initially set to an empty string.
            if (syncStyle!.sheet == null) {
                syncStyle!.textContent = '';
            }

            const sheet = syncStyle!.sheet;

            removeCSSRulesFromSheet(sheet!);

            if (syncStylePositionWatcher) {
                syncStylePositionWatcher.run();
            } else if (inMode === 'next') {
                syncStylePositionWatcher = watchForNodePosition(syncStyle!, 'prev-sibling', () => {
                    forceRenderStyle = true;
                    buildOverrides();
                });
            }

            return syncStyle!.sheet!;
        }

        function buildOverrides() {
            const force = forceRenderStyle;