Function detectSessionFileType

src/utils/memoryFileDetection.ts:40–59

(
  filePath: string,
)

 * Returns the type of session file or null if not a session file.
 */
export function detectSessionFileType(
  filePath: string,
): 'session_memory' | 'session_transcript' | null {
  const configDir = getClaudeConfigHomeDir()
  // Compare in forward-slash form; on Windows also case-fold. The caller
  // (isShellCommandTargetingMemory) converts MinGW /c/... → native before
  // reaching here, so we only need separator + case normalization.
  const normalized = toComparable(filePath)
  const configDirCmp = toComparable(configDir)
  if (!normalized.startsWith(configDirCmp)) {
    return null
  }
  if (normalized.includes('/session-memory/') && normalized.endsWith('.md')) {
    return 'session_memory'
  }
  if (normalized.includes('/projects/') && normalized.endsWith('.jsonl')) {
    return 'session_transcript'
  }
  return null
}

/**
 * Checks if a glob/pattern string indicates session file access intent.