Function exists

tests/codex-writer.test.ts:11–18

(filePath: string)

import { parseFrontmatter } from "../src/utils/frontmatter"

async function exists(filePath: string): Promise<boolean> {
  try {
    await fs.access(filePath)
    return true
  } catch {
    return false
  }
}

async function entryExists(filePath: string): Promise<boolean> {
  try {