Function readAttr

packages/lint/src/utils.ts:125–134

(tagSource: string, attr: string)

}

export function readAttr(tagSource: string, attr: string): string | null {
  if (!tagSource) return null;
  const escaped = attr.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
  // `(?<![\w-])` not `\b`: a plain `\b` boundary treats the hyphen in a longer
  // attribute as a word break, so reading "id" would wrongly match the trailing
  // `id="…"` inside `data-hf-id="…"` (and "width" inside `data-width`, etc.).
  // The lookbehind requires the match to start a fresh attribute name.
  const match = tagSource.match(new RegExp(`(?<![\\w-])${escaped}\\s*=\\s*["']([^"']+)["']`, "i"));
  return match?.[1] || null;
}

/**
 * Read an attribute that may legitimately contain the opposite quote