css-deadweigth/lib/utils.js

CLI tool to detect unused CSS in your project

// lib/utils.js

export function wildcardToRegex(wildcard) {
  // Escape regex special chars except *
  const escaped = wildcard.replace(/[-\/\\^$+?.()|[\]{}]/g, '\\$&');
  const regexStr = '^' + escaped.replace(/\*/g, '.*') + '$';
  return new RegExp(regexStr);
}

export function isIgnored(selector, ignorePatterns) {
  return ignorePatterns.some(pattern => {
    if (pattern.includes('*')) {
      const regex = wildcardToRegex(pattern);
      return regex.test(selector);
    } else {
      return selector === pattern;
    }
  });
}