Function getRulesSync

src/inject/dynamic-theme/style-manager.ts:201–229

()

    }

    function getRulesSync(): CSSRuleList | null {
        if (corsCopies.has(element)) {
            logInfo('[getRulesSync] Using cors-copy.');
            return corsCopies.get(element)!.cssRules;
        }
        if (containsCSSImport()) {
            logInfo('[getRulesSync] CSSImport detected.');
            return null;
        }

        const cssRules = safeGetSheetRules();
        if (
            element instanceof HTMLLinkElement &&
            !isRelativeHrefOnAbsolutePath(element.href) &&
            hasImports(cssRules, false)
        ) {
            logInfo('[getRulesSync] CSSImportRule detected on non-local href.');
            return null;
        }

        if (hasImports(cssRules, true)) {
            logInfo('[getRulesSync] Cross-Origin CSSImportRule detected.');
            return null;
        }

        logInfo('[getRulesSync] Using cssRules.');
        !cssRules && logWarn('[getRulesSync] cssRules is null, trying again.');
        return cssRules;
    }

    function insertStyle() {
        if (inMode === 'next') {