contentful-export-to-markdown.js

// Convert contentful CLI export to markdown with node

const slugify = require('slugify')
const fs = require('fs')
const data = require('./data.json')

const sanatiseFields = fields => {
  return Object.keys(fields).reduce((prev, next) => {
    prev[next] = fields[next]['en-US'] ? fields[next]['en-US'] : fields[next]
    return prev
  }, {})
}

const { entries } = data
entries
  .forEach(entry => {
    const {
      title,
      pageTitle,
      slug,
      description,
      body,
      publishDate,
      tags,
    } = sanatiseFields(entry.fields)

    const frontMatterThis = fields => {
      const f = d => {
        if (d === 'true' || d === true) return 'true'
        if (d === 'false' || d === false) return 'false'
        return JSON.stringify(d)
      }

      if (!fields) return
      let frontMatter = '---\n'
      Object.keys(fields).forEach(key => {
        const data = fields[key]
        if (typeof data === 'string') {
          frontMatter += `${key}: ${f(data)}\n`
        }
        if (Array.isArray(data)) {
          frontMatter += `${key}:\n`
          data.forEach(item => {
            frontMatter += `  - ${f(item)}\n` // Going to assume string at this point
          })
        }
      })
      frontMatter += '---\n'
      return frontMatter
    }
    const content = `
${frontMatterThis({
      title,
      pageTitle,
      slug,
      description,
      publishDate,
      tags,
    })}
${body || ''}
`
    try {
      fs.writeFileSync(`${slug || slugify(title)}.md`, content)
    } catch (e) {
      console.log('Cannot write file, :( Oh, the saddness!', e)
    }
  })