Function extractClaudeCodeHints

src/utils/claudeCodeHints.ts:72–120

(
  output: string,
  command: string,
)

 *   whitespace-separated token is recorded as `sourceCommand`.
 */
export function extractClaudeCodeHints(
  output: string,
  command: string,
): { hints: ClaudeCodeHint[]; stripped: string } {
  // Fast path: no tag open sequence → no work, no allocation.
  if (!output.includes('<claude-code-hint')) {
    return { hints: [], stripped: output }
  }

  const sourceCommand = firstCommandToken(command)
  const hints: ClaudeCodeHint[] = []

  const stripped = output.replace(HINT_TAG_RE, rawLine => {
    const attrs = parseAttrs(rawLine)
    const v = Number(attrs.v)
    const type = attrs.type
    const value = attrs.value

    if (!SUPPORTED_VERSIONS.has(v)) {
      logForDebugging(
        `[claudeCodeHints] dropped hint with unsupported v=${attrs.v}`,
      )
      return ''
    }
    if (!type || !SUPPORTED_TYPES.has(type)) {
      logForDebugging(
        `[claudeCodeHints] dropped hint with unsupported type=${type}`,
      )
      return ''
    }
    if (!value) {
      logForDebugging('[claudeCodeHints] dropped hint with empty value')
      return ''
    }

    hints.push({ v, type: type as ClaudeCodeHintType, value, sourceCommand })
    return ''
  })

  // Dropping a matched line leaves a blank line (the surrounding newlines
  // remain). Collapse runs of blank lines introduced by the replace so the
  // model-visible output doesn't grow vertical whitespace.
  const collapsed =
    hints.length > 0 || stripped !== output
      ? stripped.replace(/\n{3,}/g, '\n\n')
      : stripped

  return { hints, stripped: collapsed }
}

function parseAttrs(tagBody: string): Record<string, string> {
  const attrs: Record<string, string> = {}