zss-engine/dist/esm/utils/is-hash-in-style-sheets.js

Zero-runtime StyleSheet Engine

export function isHashInStyleSheets(hash) {
    const sheets = Array.from(document.styleSheets);
    function checkRule(rule) {
        if (rule instanceof CSSStyleRule && rule.selectorText) {
            return hasHashInSelector(rule.selectorText, hash);
        }
        if (rule instanceof CSSMediaRule) {
            return Array.from(rule.cssRules).some(checkRule);
        }
        if (rule instanceof CSSContainerRule) {
            return Array.from(rule.cssRules).some(checkRule);
        }
        if (rule instanceof CSSSupportsRule) {
            return Array.from(rule.cssRules).some(checkRule);
        }
        if ('cssRules' in rule && rule.cssRules) {
            return Array.from(rule.cssRules).some(checkRule);
        }
        return false;
    }
    function hasHashInSelector(selectorText, hash) {
        const selectors = selectorText.split(',').map(s => s.trim());
        return selectors.some(selector => {
            const classPattern = new RegExp(`\\.${escapeRegExp(hash)}(?![\\w-])`);
            return classPattern.test(selector);
        });
    }
    function escapeRegExp(string) {
        return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
    }
    return sheets.some(sheet => {
        try {
            return Array.from(sheet.cssRules).some(checkRule);
        }
        catch (_err) {
            return false;
        }
    });
}