Function runCheck

src/inject/detector.ts:82–111

(callback: (hasDarkTheme: boolean) => void)

}

function runCheck(callback: (hasDarkTheme: boolean) => void) {
    const colorSchemeMeta = document.querySelector(COLOR_SCHEME_META_SELECTOR) as HTMLMetaElement;
    if (colorSchemeMeta) {
        const isMetaDark = colorSchemeMeta.content === 'dark' || (colorSchemeMeta.content.includes('dark') && isSystemDarkModeEnabled());
        callback(isMetaDark);
        return;
    }

    if (
        document.documentElement.classList.contains('dark') ||
        document.body?.classList.contains('dark') ||
        document.documentElement.dataset.theme?.toLocaleLowerCase() === 'dark'
    ) {
        callback(true);
        return;
    }

    const drSheets = Array.from(document.styleSheets).filter((s) => (s.ownerNode as HTMLElement)?.classList.contains('darkreader'))
        .concat(
            Array.isArray(document.adoptedStyleSheets) ? Array.from(document.adoptedStyleSheets).filter(
                (s) => (s.cssRules?.[0] as CSSStyleRule)?.selectorText?.startsWith('#__darkreader')
            ) : [],
        );
    drSheets.forEach((sheet) => sheet.disabled = true);

    const darkThemeDetected = hasBuiltInDarkTheme();

    drSheets.forEach((sheet) => sheet.disabled = false);
    callback(darkThemeDetected);
}

function hasSomeStyle() {
    if (document.querySelector(COLOR_SCHEME_META_SELECTOR) != null) {