Convert Inkdrop's backup to plain Markdown files

export-inkdrop.js

// read notes from `data/note` directory and export to `md` directory

const fs = require('fs/promises')

;(async () => {
  fs.mkdir('md', { recursive: true })
  const list = await fs.readdir('data/note')
  const usedNames = new Set()
  for (const fileName of list) {
    if (!/\.json$/.test(fileName)) continue
    const file = await fs.open(`data/note/${fileName}`, 'r')
    const content = await file.readFile({ encoding: 'utf-8' })
    await file.close()
    const { title, body } = JSON.parse(content)
    console.log(title)
    let newFileName = title
    let i = 1
    while (usedNames.has(newFileName)) {
      newFileName = `${title} (${i})`
      i++
    }
    usedNames.add(newFileName)
    const newFile = await fs.open(`md/${newFileName}.md`, 'w')
    await newFile.writeFile(body, { encoding: 'utf-8' })
    await newFile.close()
  }
})()