Function parseFrontmatter

server/utils/skills.ts:7–58

(raw: string)

 * Returns { frontmatter, content } where content is the markdown body without frontmatter.
 */
export function parseFrontmatter(raw: string): { frontmatter: SkillFrontmatter; content: string } {
  const match = raw.match(/^---\r?\n([\s\S]*?)\r?\n---\r?\n([\s\S]*)$/)
  if (!match) {
    throw createError({ statusCode: 400, message: 'Invalid SKILL.md: missing YAML frontmatter' })
  }

  const yamlBlock = match[1]!
  const content = match[2]!

  const frontmatter: Record<string, string | Record<string, string>> = {}
  let currentKey = ''
  let inMetadata = false
  const metadata: Record<string, string> = {}

  for (const line of yamlBlock.split('\n')) {
    const trimmed = line.trim()
    if (!trimmed || trimmed.startsWith('#')) continue

    if (line.startsWith('  ') && inMetadata) {
      const [key, ...valueParts] = trimmed.split(':')
      if (key && valueParts.length) {
        metadata[key.trim()] = valueParts
          .join(':')
          .trim()
          .replace(/^["']|["']$/g, '')
      }
    } else {
      const colonIndex = line.indexOf(':')
      if (colonIndex !== -1) {
        currentKey = line.slice(0, colonIndex).trim()
        const value = line.slice(colonIndex + 1).trim()
        inMetadata = currentKey === 'metadata' && !value
        if (!inMetadata && value) {
          frontmatter[currentKey] = value.replace(/^["']|["']$/g, '')
        }
      }
    }
  }

  if (Object.keys(metadata).length > 0) {
    frontmatter.metadata = metadata
  }

  if (!frontmatter.name || !frontmatter.description) {
    throw createError({
      statusCode: 400,
      message: 'Invalid SKILL.md: missing required name or description',
    })
  }

  return { frontmatter: frontmatter as unknown as SkillFrontmatter, content }
}

export interface SkillDirInfo {
  name: string