Function removeInlinedSelectorsFromCSS

lib/utils.js:355–396

(css, inlinedSelectors, options, ignoredPseudos)

 */

export function removeInlinedSelectorsFromCSS(css, inlinedSelectors, options, ignoredPseudos) {
  let root;
  try {
    root = parseRoot(css);
  } catch (e) {
    return '';
  }

  const keep = [];

  for (const node of root.nodes) {
    // Always preserve non-rule types (at-rules, comments)
    if (node.type !== 'rule') {
      keep.push(node);
      continue;
    }

    // Keep rules with pseudos that were ignored during inlining
    if (options.preservePseudos && matchesPseudo(node.selectors[0], ignoredPseudos)) {
      keep.push(node);
      continue;
    }

    // Keep rules that match preservedSelectors
    if (options.preservedSelectors && node.selectors.some((sel) => matchesPreservedSelector(sel, options.preservedSelectors))) {
      keep.push(node);
      continue;
    }

    // Filter out selectors that were inlined
    const remainingSelectors = node.selectors.filter((sel) => !inlinedSelectors.has(sel));

    if (remainingSelectors.length > 0) {
      const clone = node.clone();
      clone.selectors = remainingSelectors;
      keep.push(clone);
    }
  }

  if (keep.length === 0) return '';
  return stringifyNodes(keep);
}

/**
 * Compares two specificity vectors, returning the winning one.